./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF --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 ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:09:53,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:09:53,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:09:53,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:09:53,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:09:53,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:09:53,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:09:53,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:09:53,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:09:53,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:09:53,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:09:53,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:09:53,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:09:53,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:09:53,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:09:53,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:09:53,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:09:53,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:09:53,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:09:53,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:09:53,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:09:53,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:09:53,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:09:53,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:09:53,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:09:53,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:09:53,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:09:53,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:09:53,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:09:53,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:09:53,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:09:53,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:09:53,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:09:53,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:09:53,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:09:53,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:09:53,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:09:53,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:09:53,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:09:53,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:09:53,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:09:53,899 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/config/svcomp-DataRace-32bit-Automizer_Default.epf [2021-11-20 07:09:53,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:09:53,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:09:53,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:09:53,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:09:53,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:09:53,947 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:09:53,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:09:53,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:09:53,948 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:09:53,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:09:53,950 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:09:53,950 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:09:53,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:09:53,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:09:53,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:09:53,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:09:53,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:09:53,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:09:53,951 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-11-20 07:09:53,952 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:09:53,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:09:53,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:09:53,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:09:53,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:09:53,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:09:53,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:09:53,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:09:53,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:09:53,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:09:53,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:09:53,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:09:53,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:09:53,955 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:09:53,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:09:53,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:09:53,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:09:53,956 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_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2021-11-20 07:09:54,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:09:54,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:09:54,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:09:54,309 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:09:54,310 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:09:54,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2021-11-20 07:09:54,405 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/data/9a9c4ac7c/d04925000a494acba4d3107ebf3819ea/FLAGf3e6c6915 [2021-11-20 07:09:54,991 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:09:54,991 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2021-11-20 07:09:55,019 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/data/9a9c4ac7c/d04925000a494acba4d3107ebf3819ea/FLAGf3e6c6915 [2021-11-20 07:09:55,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/data/9a9c4ac7c/d04925000a494acba4d3107ebf3819ea [2021-11-20 07:09:55,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:09:55,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:09:55,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:09:55,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:09:55,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:09:55,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:09:55" (1/1) ... [2021-11-20 07:09:55,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1986975a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:55, skipping insertion in model container [2021-11-20 07:09:55,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:09:55" (1/1) ... [2021-11-20 07:09:55,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:09:55,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:09:55,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:09:55,895 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:09:55,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:09:55,993 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:09:55,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:55 WrapperNode [2021-11-20 07:09:55,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:09:55,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:09:55,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:09:55,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:09:56,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:55" (1/1) ... [2021-11-20 07:09:56,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:55" (1/1) ... [2021-11-20 07:09:56,063 INFO L137 Inliner]: procedures = 262, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2021-11-20 07:09:56,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:09:56,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:09:56,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:09:56,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:09:56,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:55" (1/1) ... [2021-11-20 07:09:56,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:55" (1/1) ... [2021-11-20 07:09:56,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:55" (1/1) ... [2021-11-20 07:09:56,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:55" (1/1) ... [2021-11-20 07:09:56,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:55" (1/1) ... [2021-11-20 07:09:56,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:55" (1/1) ... [2021-11-20 07:09:56,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:55" (1/1) ... [2021-11-20 07:09:56,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:09:56,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:09:56,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:09:56,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:09:56,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:55" (1/1) ... [2021-11-20 07:09:56,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:09:56,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:09:56,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:09:56,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:09:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:09:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:09:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:09:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:09:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-20 07:09:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:09:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-11-20 07:09:56,203 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-11-20 07:09:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:09:56,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:09:56,205 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 07:09:56,363 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:09:56,365 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:09:56,583 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:09:56,591 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:09:56,592 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 07:09:56,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:09:56 BoogieIcfgContainer [2021-11-20 07:09:56,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:09:56,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:09:56,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:09:56,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:09:56,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:09:55" (1/3) ... [2021-11-20 07:09:56,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1bd129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:09:56, skipping insertion in model container [2021-11-20 07:09:56,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:09:55" (2/3) ... [2021-11-20 07:09:56,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1bd129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:09:56, skipping insertion in model container [2021-11-20 07:09:56,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:09:56" (3/3) ... [2021-11-20 07:09:56,602 INFO L111 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2021-11-20 07:09:56,608 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 07:09:56,608 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:09:56,608 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-20 07:09:56,608 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 07:09:56,637 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,637 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,638 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,638 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,638 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,638 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,639 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,639 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,639 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,639 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,640 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,640 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,640 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,641 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,641 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,641 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,641 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,642 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,642 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,642 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,642 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,643 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,643 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,643 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,643 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,643 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,644 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,644 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,644 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,644 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,645 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,645 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,645 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,645 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,646 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,646 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,646 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,646 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,646 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,647 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,647 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,647 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,647 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,648 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,648 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,648 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,648 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,649 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,649 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,649 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,649 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,650 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,650 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,650 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,650 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,651 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,651 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,651 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,651 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,651 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,652 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,652 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,652 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,652 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,653 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,653 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,653 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,654 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,654 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,654 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,654 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,655 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,655 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,655 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,656 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,656 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,656 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,656 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,657 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,657 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,657 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,657 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,658 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,658 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,658 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,658 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,659 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,659 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,659 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,659 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,660 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,660 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,660 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,660 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,661 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,661 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,661 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,661 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,661 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,662 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,662 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,662 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,663 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,663 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,663 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,663 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,663 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,664 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,664 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,664 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,664 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,665 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,665 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,665 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,665 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,666 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,666 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,666 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,666 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,666 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,667 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,667 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,667 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,667 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,668 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,668 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,668 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,668 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,669 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,669 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,669 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,669 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,670 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,670 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,670 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,671 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,671 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,671 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,671 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,671 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,672 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,672 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,672 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,672 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,673 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,673 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,673 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,673 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,673 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,674 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,674 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,674 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,677 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,677 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,678 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,678 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,678 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,678 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,678 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,679 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,679 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,679 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,679 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,680 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,680 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,680 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 07:09:56,683 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-20 07:09:56,729 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:09:56,736 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:09:56,736 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-20 07:09:56,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 106 transitions, 217 flow [2021-11-20 07:09:56,793 INFO L129 PetriNetUnfolder]: 6/105 cut-off events. [2021-11-20 07:09:56,793 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-20 07:09:56,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 105 events. 6/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2021-11-20 07:09:56,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 106 transitions, 217 flow [2021-11-20 07:09:56,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 105 transitions, 213 flow [2021-11-20 07:09:56,820 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2021-11-20 07:09:56,820 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-20 07:09:56,821 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:09:56,821 INFO L254 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] [2021-11-20 07:09:56,822 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:09:56,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:56,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1960811916, now seen corresponding path program 1 times [2021-11-20 07:09:56,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:56,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070432566] [2021-11-20 07:09:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:56,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:57,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:09:57,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070432566] [2021-11-20 07:09:57,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070432566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:09:57,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:09:57,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:09:57,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589050589] [2021-11-20 07:09:57,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:09:57,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:09:57,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:09:57,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:09:57,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:09:57,168 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 106 [2021-11-20 07:09:57,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:57,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:09:57,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 106 [2021-11-20 07:09:57,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:09:57,228 INFO L129 PetriNetUnfolder]: 3/106 cut-off events. [2021-11-20 07:09:57,229 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-20 07:09:57,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 106 events. 3/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 2/101 useless extension candidates. Maximal degree in co-relation 78. Up to 9 conditions per place. [2021-11-20 07:09:57,232 INFO L132 encePairwiseOnDemand]: 100/106 looper letters, 10 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2021-11-20 07:09:57,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 106 transitions, 239 flow [2021-11-20 07:09:57,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:09:57,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 07:09:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2021-11-20 07:09:57,251 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.949685534591195 [2021-11-20 07:09:57,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2021-11-20 07:09:57,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2021-11-20 07:09:57,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:09:57,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2021-11-20 07:09:57,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:57,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:57,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:57,285 INFO L186 Difference]: Start difference. First operand has 103 places, 105 transitions, 213 flow. Second operand 3 states and 302 transitions. [2021-11-20 07:09:57,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 106 transitions, 239 flow [2021-11-20 07:09:57,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 106 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-20 07:09:57,296 INFO L242 Difference]: Finished difference. Result has 105 places, 103 transitions, 218 flow [2021-11-20 07:09:57,299 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2021-11-20 07:09:57,303 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 2 predicate places. [2021-11-20 07:09:57,303 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 218 flow [2021-11-20 07:09:57,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:57,304 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:09:57,304 INFO L254 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] [2021-11-20 07:09:57,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:09:57,304 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:09:57,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:57,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2113524451, now seen corresponding path program 1 times [2021-11-20 07:09:57,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:57,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163079458] [2021-11-20 07:09:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:57,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:57,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:09:57,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163079458] [2021-11-20 07:09:57,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163079458] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:09:57,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146883951] [2021-11-20 07:09:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:57,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:09:57,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:09:57,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:09:57,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:09:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:57,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:09:57,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:09:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:57,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:09:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:57,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146883951] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:09:57,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:09:57,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-20 07:09:57,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360086587] [2021-11-20 07:09:57,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:09:57,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:09:57,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:09:57,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:09:57,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:09:57,983 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 106 [2021-11-20 07:09:57,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 218 flow. Second operand has 10 states, 10 states have (on average 96.1) internal successors, (961), 10 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:57,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:09:57,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 106 [2021-11-20 07:09:57,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:09:58,134 INFO L129 PetriNetUnfolder]: 3/113 cut-off events. [2021-11-20 07:09:58,135 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-20 07:09:58,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 113 events. 3/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 123 event pairs, 0 based on Foata normal form. 2/109 useless extension candidates. Maximal degree in co-relation 116. Up to 6 conditions per place. [2021-11-20 07:09:58,137 INFO L132 encePairwiseOnDemand]: 100/106 looper letters, 11 selfloop transitions, 9 changer transitions 0/113 dead transitions. [2021-11-20 07:09:58,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 280 flow [2021-11-20 07:09:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:09:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-20 07:09:58,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 868 transitions. [2021-11-20 07:09:58,144 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.909853249475891 [2021-11-20 07:09:58,144 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 868 transitions. [2021-11-20 07:09:58,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 868 transitions. [2021-11-20 07:09:58,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:09:58,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 868 transitions. [2021-11-20 07:09:58,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.44444444444444) internal successors, (868), 9 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:58,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 106.0) internal successors, (1060), 10 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:58,154 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 106.0) internal successors, (1060), 10 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:58,154 INFO L186 Difference]: Start difference. First operand has 105 places, 103 transitions, 218 flow. Second operand 9 states and 868 transitions. [2021-11-20 07:09:58,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 280 flow [2021-11-20 07:09:58,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 113 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-20 07:09:58,159 INFO L242 Difference]: Finished difference. Result has 115 places, 109 transitions, 266 flow [2021-11-20 07:09:58,159 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=266, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2021-11-20 07:09:58,160 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 12 predicate places. [2021-11-20 07:09:58,160 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 266 flow [2021-11-20 07:09:58,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 96.1) internal successors, (961), 10 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:58,161 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:09:58,162 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-11-20 07:09:58,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-20 07:09:58,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:09:58,365 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:09:58,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:58,365 INFO L85 PathProgramCache]: Analyzing trace with hash 37547901, now seen corresponding path program 2 times [2021-11-20 07:09:58,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:58,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365095348] [2021-11-20 07:09:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:58,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:58,506 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:58,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:09:58,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365095348] [2021-11-20 07:09:58,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365095348] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:09:58,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452407944] [2021-11-20 07:09:58,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:09:58,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:09:58,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:09:58,509 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:09:58,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:09:58,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 07:09:58,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:09:58,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:09:58,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:09:58,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 07:09:58,735 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 07:09:58,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:09:58,778 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-20 07:09:58,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 07:09:58,845 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-11-20 07:09:58,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 07:09:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 07:09:58,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:09:58,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452407944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:09:58,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:09:58,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2021-11-20 07:09:58,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244615015] [2021-11-20 07:09:58,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:09:58,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:09:58,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:09:58,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:09:58,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:09:58,879 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 106 [2021-11-20 07:09:58,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:58,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:09:58,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 106 [2021-11-20 07:09:58,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:09:59,350 INFO L129 PetriNetUnfolder]: 320/1296 cut-off events. [2021-11-20 07:09:59,350 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-11-20 07:09:59,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 1296 events. 320/1296 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 8318 event pairs, 140 based on Foata normal form. 0/1178 useless extension candidates. Maximal degree in co-relation 1908. Up to 492 conditions per place. [2021-11-20 07:09:59,363 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 63 selfloop transitions, 22 changer transitions 0/163 dead transitions. [2021-11-20 07:09:59,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 163 transitions, 544 flow [2021-11-20 07:09:59,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:09:59,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-20 07:09:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 518 transitions. [2021-11-20 07:09:59,366 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8144654088050315 [2021-11-20 07:09:59,366 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 518 transitions. [2021-11-20 07:09:59,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 518 transitions. [2021-11-20 07:09:59,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:09:59,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 518 transitions. [2021-11-20 07:09:59,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:59,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:59,372 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:59,372 INFO L186 Difference]: Start difference. First operand has 115 places, 109 transitions, 266 flow. Second operand 6 states and 518 transitions. [2021-11-20 07:09:59,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 163 transitions, 544 flow [2021-11-20 07:09:59,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 163 transitions, 538 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-11-20 07:09:59,380 INFO L242 Difference]: Finished difference. Result has 124 places, 130 transitions, 410 flow [2021-11-20 07:09:59,380 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=410, PETRI_PLACES=124, PETRI_TRANSITIONS=130} [2021-11-20 07:09:59,381 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 21 predicate places. [2021-11-20 07:09:59,381 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 130 transitions, 410 flow [2021-11-20 07:09:59,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:09:59,382 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:09:59,382 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-11-20 07:09:59,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:09:59,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:09:59,596 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:09:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:59,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1921653659, now seen corresponding path program 1 times [2021-11-20 07:09:59,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:59,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526141048] [2021-11-20 07:09:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:59,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:59,723 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:59,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:09:59,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526141048] [2021-11-20 07:09:59,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526141048] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:09:59,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158630142] [2021-11-20 07:09:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:59,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:09:59,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:09:59,731 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:09:59,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:09:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:59,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:09:59,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:09:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:59,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:00,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158630142] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:10:00,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:10:00,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2021-11-20 07:10:00,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100593920] [2021-11-20 07:10:00,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:10:00,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:10:00,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:10:00,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:10:00,109 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 106 [2021-11-20 07:10:00,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 130 transitions, 410 flow. Second operand has 18 states, 18 states have (on average 96.27777777777777) internal successors, (1733), 18 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:00,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:00,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 106 [2021-11-20 07:10:00,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:00,387 INFO L129 PetriNetUnfolder]: 49/466 cut-off events. [2021-11-20 07:10:00,387 INFO L130 PetriNetUnfolder]: For 47/50 co-relation queries the response was YES. [2021-11-20 07:10:00,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 466 events. 49/466 cut-off events. For 47/50 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1951 event pairs, 4 based on Foata normal form. 4/441 useless extension candidates. Maximal degree in co-relation 582. Up to 55 conditions per place. [2021-11-20 07:10:00,392 INFO L132 encePairwiseOnDemand]: 100/106 looper letters, 19 selfloop transitions, 21 changer transitions 0/154 dead transitions. [2021-11-20 07:10:00,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 154 transitions, 590 flow [2021-11-20 07:10:00,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:10:00,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 07:10:00,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2018 transitions. [2021-11-20 07:10:00,400 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9065588499550764 [2021-11-20 07:10:00,400 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2018 transitions. [2021-11-20 07:10:00,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2018 transitions. [2021-11-20 07:10:00,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:00,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2018 transitions. [2021-11-20 07:10:00,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.0952380952381) internal successors, (2018), 21 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:00,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 106.0) internal successors, (2332), 22 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:00,417 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 106.0) internal successors, (2332), 22 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:00,418 INFO L186 Difference]: Start difference. First operand has 124 places, 130 transitions, 410 flow. Second operand 21 states and 2018 transitions. [2021-11-20 07:10:00,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 154 transitions, 590 flow [2021-11-20 07:10:00,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 154 transitions, 590 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-20 07:10:00,430 INFO L242 Difference]: Finished difference. Result has 149 places, 143 transitions, 540 flow [2021-11-20 07:10:00,430 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=540, PETRI_PLACES=149, PETRI_TRANSITIONS=143} [2021-11-20 07:10:00,432 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 46 predicate places. [2021-11-20 07:10:00,432 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 143 transitions, 540 flow [2021-11-20 07:10:00,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 96.27777777777777) internal successors, (1733), 18 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:00,434 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:00,434 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-11-20 07:10:00,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:00,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:10:00,648 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:10:00,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:00,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1189660581, now seen corresponding path program 2 times [2021-11-20 07:10:00,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:00,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244836382] [2021-11-20 07:10:00,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:00,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:00,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:00,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244836382] [2021-11-20 07:10:00,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244836382] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:10:00,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522212426] [2021-11-20 07:10:00,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:10:00,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:10:00,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:10:00,872 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:10:00,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:10:00,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 07:10:00,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:10:00,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:10:00,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:01,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 07:10:01,080 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 07:10:01,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:10:01,132 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-20 07:10:01,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 07:10:01,196 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-11-20 07:10:01,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 07:10:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-20 07:10:01,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:10:01,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522212426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:01,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:10:01,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2021-11-20 07:10:01,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714435259] [2021-11-20 07:10:01,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:01,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:10:01,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:01,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:10:01,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-11-20 07:10:01,231 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 106 [2021-11-20 07:10:01,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 143 transitions, 540 flow. Second operand has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:01,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:01,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 106 [2021-11-20 07:10:01,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:01,693 INFO L129 PetriNetUnfolder]: 397/1511 cut-off events. [2021-11-20 07:10:01,694 INFO L130 PetriNetUnfolder]: For 513/521 co-relation queries the response was YES. [2021-11-20 07:10:01,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2937 conditions, 1511 events. 397/1511 cut-off events. For 513/521 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 9875 event pairs, 115 based on Foata normal form. 0/1409 useless extension candidates. Maximal degree in co-relation 2797. Up to 593 conditions per place. [2021-11-20 07:10:01,709 INFO L132 encePairwiseOnDemand]: 95/106 looper letters, 100 selfloop transitions, 30 changer transitions 0/221 dead transitions. [2021-11-20 07:10:01,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 221 transitions, 1118 flow [2021-11-20 07:10:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:10:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-20 07:10:01,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 518 transitions. [2021-11-20 07:10:01,712 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8144654088050315 [2021-11-20 07:10:01,712 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 518 transitions. [2021-11-20 07:10:01,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 518 transitions. [2021-11-20 07:10:01,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:01,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 518 transitions. [2021-11-20 07:10:01,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:01,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:01,717 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:01,717 INFO L186 Difference]: Start difference. First operand has 149 places, 143 transitions, 540 flow. Second operand 6 states and 518 transitions. [2021-11-20 07:10:01,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 221 transitions, 1118 flow [2021-11-20 07:10:01,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 221 transitions, 1094 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-11-20 07:10:01,728 INFO L242 Difference]: Finished difference. Result has 153 places, 172 transitions, 766 flow [2021-11-20 07:10:01,728 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=766, PETRI_PLACES=153, PETRI_TRANSITIONS=172} [2021-11-20 07:10:01,729 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 50 predicate places. [2021-11-20 07:10:01,729 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 172 transitions, 766 flow [2021-11-20 07:10:01,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:01,730 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:01,730 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-11-20 07:10:01,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:01,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:10:01,945 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:10:01,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:01,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1998481730, now seen corresponding path program 1 times [2021-11-20 07:10:01,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:01,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430596973] [2021-11-20 07:10:01,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:01,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:02,167 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:02,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:02,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430596973] [2021-11-20 07:10:02,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430596973] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:10:02,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961033605] [2021-11-20 07:10:02,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:02,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:10:02,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:10:02,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:10:02,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:10:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:02,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 07:10:02,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:02,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:10:02,651 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:10:02,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961033605] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:10:02,652 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:10:02,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2021-11-20 07:10:02,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190153452] [2021-11-20 07:10:02,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:10:02,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 07:10:02,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:02,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 07:10:02,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-11-20 07:10:02,661 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 106 [2021-11-20 07:10:02,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 172 transitions, 766 flow. Second operand has 23 states, 23 states have (on average 96.43478260869566) internal successors, (2218), 23 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:02,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:02,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 106 [2021-11-20 07:10:02,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:03,114 INFO L129 PetriNetUnfolder]: 102/720 cut-off events. [2021-11-20 07:10:03,114 INFO L130 PetriNetUnfolder]: For 336/342 co-relation queries the response was YES. [2021-11-20 07:10:03,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1388 conditions, 720 events. 102/720 cut-off events. For 336/342 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3879 event pairs, 7 based on Foata normal form. 3/687 useless extension candidates. Maximal degree in co-relation 1157. Up to 76 conditions per place. [2021-11-20 07:10:03,121 INFO L132 encePairwiseOnDemand]: 100/106 looper letters, 25 selfloop transitions, 30 changer transitions 0/198 dead transitions. [2021-11-20 07:10:03,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 198 transitions, 1016 flow [2021-11-20 07:10:03,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:10:03,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:10:03,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2878 transitions. [2021-11-20 07:10:03,132 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9050314465408805 [2021-11-20 07:10:03,132 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2878 transitions. [2021-11-20 07:10:03,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2878 transitions. [2021-11-20 07:10:03,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:03,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2878 transitions. [2021-11-20 07:10:03,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 95.93333333333334) internal successors, (2878), 30 states have internal predecessors, (2878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:03,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 106.0) internal successors, (3286), 31 states have internal predecessors, (3286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:03,153 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 106.0) internal successors, (3286), 31 states have internal predecessors, (3286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:03,153 INFO L186 Difference]: Start difference. First operand has 153 places, 172 transitions, 766 flow. Second operand 30 states and 2878 transitions. [2021-11-20 07:10:03,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 198 transitions, 1016 flow [2021-11-20 07:10:03,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 198 transitions, 1016 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-20 07:10:03,163 INFO L242 Difference]: Finished difference. Result has 186 places, 182 transitions, 918 flow [2021-11-20 07:10:03,164 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=918, PETRI_PLACES=186, PETRI_TRANSITIONS=182} [2021-11-20 07:10:03,166 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 83 predicate places. [2021-11-20 07:10:03,166 INFO L470 AbstractCegarLoop]: Abstraction has has 186 places, 182 transitions, 918 flow [2021-11-20 07:10:03,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 96.43478260869566) internal successors, (2218), 23 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:03,167 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:03,168 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:03,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:03,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:10:03,379 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:10:03,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash 920350873, now seen corresponding path program 2 times [2021-11-20 07:10:03,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:03,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951354574] [2021-11-20 07:10:03,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:03,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-20 07:10:03,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:03,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951354574] [2021-11-20 07:10:03,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951354574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:03,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:03,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:10:03,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924362679] [2021-11-20 07:10:03,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:03,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:10:03,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:03,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:10:03,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:10:03,567 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 106 [2021-11-20 07:10:03,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 182 transitions, 918 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:03,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:03,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 106 [2021-11-20 07:10:03,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:04,159 INFO L129 PetriNetUnfolder]: 508/1985 cut-off events. [2021-11-20 07:10:04,159 INFO L130 PetriNetUnfolder]: For 1121/1161 co-relation queries the response was YES. [2021-11-20 07:10:04,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4317 conditions, 1985 events. 508/1985 cut-off events. For 1121/1161 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14305 event pairs, 147 based on Foata normal form. 6/1881 useless extension candidates. Maximal degree in co-relation 4095. Up to 889 conditions per place. [2021-11-20 07:10:04,182 INFO L132 encePairwiseOnDemand]: 91/106 looper letters, 90 selfloop transitions, 57 changer transitions 0/246 dead transitions. [2021-11-20 07:10:04,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 246 transitions, 1500 flow [2021-11-20 07:10:04,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:10:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-20 07:10:04,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2021-11-20 07:10:04,184 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7971698113207547 [2021-11-20 07:10:04,184 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2021-11-20 07:10:04,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2021-11-20 07:10:04,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:04,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2021-11-20 07:10:04,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:04,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:04,189 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:04,189 INFO L186 Difference]: Start difference. First operand has 186 places, 182 transitions, 918 flow. Second operand 6 states and 507 transitions. [2021-11-20 07:10:04,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 246 transitions, 1500 flow [2021-11-20 07:10:04,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 246 transitions, 1454 flow, removed 5 selfloop flow, removed 18 redundant places. [2021-11-20 07:10:04,203 INFO L242 Difference]: Finished difference. Result has 178 places, 229 transitions, 1370 flow [2021-11-20 07:10:04,204 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1370, PETRI_PLACES=178, PETRI_TRANSITIONS=229} [2021-11-20 07:10:04,205 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 75 predicate places. [2021-11-20 07:10:04,205 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 229 transitions, 1370 flow [2021-11-20 07:10:04,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:04,205 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:04,206 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:04,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:10:04,206 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:10:04,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:04,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1018614855, now seen corresponding path program 1 times [2021-11-20 07:10:04,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:04,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165119775] [2021-11-20 07:10:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:04,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-20 07:10:04,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:04,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165119775] [2021-11-20 07:10:04,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165119775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:04,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:10:04,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:10:04,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486759677] [2021-11-20 07:10:04,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:04,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:10:04,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:04,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:10:04,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:10:04,311 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 106 [2021-11-20 07:10:04,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 229 transitions, 1370 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:04,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:04,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 106 [2021-11-20 07:10:04,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:05,097 INFO L129 PetriNetUnfolder]: 630/2163 cut-off events. [2021-11-20 07:10:05,097 INFO L130 PetriNetUnfolder]: For 2409/2467 co-relation queries the response was YES. [2021-11-20 07:10:05,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5733 conditions, 2163 events. 630/2163 cut-off events. For 2409/2467 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 15246 event pairs, 149 based on Foata normal form. 0/2077 useless extension candidates. Maximal degree in co-relation 5528. Up to 1095 conditions per place. [2021-11-20 07:10:05,124 INFO L132 encePairwiseOnDemand]: 91/106 looper letters, 129 selfloop transitions, 71 changer transitions 0/300 dead transitions. [2021-11-20 07:10:05,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 300 transitions, 2196 flow [2021-11-20 07:10:05,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:10:05,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-20 07:10:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2021-11-20 07:10:05,127 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7971698113207547 [2021-11-20 07:10:05,127 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2021-11-20 07:10:05,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2021-11-20 07:10:05,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:05,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2021-11-20 07:10:05,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:05,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:05,132 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:05,132 INFO L186 Difference]: Start difference. First operand has 178 places, 229 transitions, 1370 flow. Second operand 6 states and 507 transitions. [2021-11-20 07:10:05,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 300 transitions, 2196 flow [2021-11-20 07:10:05,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 300 transitions, 2132 flow, removed 32 selfloop flow, removed 0 redundant places. [2021-11-20 07:10:05,159 INFO L242 Difference]: Finished difference. Result has 188 places, 282 transitions, 1982 flow [2021-11-20 07:10:05,160 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1982, PETRI_PLACES=188, PETRI_TRANSITIONS=282} [2021-11-20 07:10:05,163 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 85 predicate places. [2021-11-20 07:10:05,163 INFO L470 AbstractCegarLoop]: Abstraction has has 188 places, 282 transitions, 1982 flow [2021-11-20 07:10:05,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:05,164 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:05,164 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:05,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:10:05,165 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:10:05,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:05,165 INFO L85 PathProgramCache]: Analyzing trace with hash 142657312, now seen corresponding path program 1 times [2021-11-20 07:10:05,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:05,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799759200] [2021-11-20 07:10:05,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:05,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-20 07:10:05,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:05,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799759200] [2021-11-20 07:10:05,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799759200] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:10:05,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064794064] [2021-11-20 07:10:05,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:05,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:10:05,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:10:05,612 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:10:05,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 07:10:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:05,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 07:10:05,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:06,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 07:10:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-20 07:10:06,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:10:06,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064794064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:06,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:10:06,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-11-20 07:10:06,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500391508] [2021-11-20 07:10:06,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:06,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:10:06,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:06,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:10:06,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:10:06,187 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2021-11-20 07:10:06,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 282 transitions, 1982 flow. Second operand has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:06,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:06,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2021-11-20 07:10:06,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:09,012 INFO L129 PetriNetUnfolder]: 3144/8699 cut-off events. [2021-11-20 07:10:09,012 INFO L130 PetriNetUnfolder]: For 13933/13933 co-relation queries the response was YES. [2021-11-20 07:10:09,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25690 conditions, 8699 events. 3144/8699 cut-off events. For 13933/13933 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 70932 event pairs, 662 based on Foata normal form. 13/8448 useless extension candidates. Maximal degree in co-relation 25467. Up to 2302 conditions per place. [2021-11-20 07:10:09,130 INFO L132 encePairwiseOnDemand]: 90/106 looper letters, 827 selfloop transitions, 36 changer transitions 3/945 dead transitions. [2021-11-20 07:10:09,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 945 transitions, 8332 flow [2021-11-20 07:10:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:10:09,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-20 07:10:09,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1296 transitions. [2021-11-20 07:10:09,136 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6434955312810328 [2021-11-20 07:10:09,136 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1296 transitions. [2021-11-20 07:10:09,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1296 transitions. [2021-11-20 07:10:09,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:09,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1296 transitions. [2021-11-20 07:10:09,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 68.21052631578948) internal successors, (1296), 19 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:09,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 106.0) internal successors, (2120), 20 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:09,147 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 106.0) internal successors, (2120), 20 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:09,148 INFO L186 Difference]: Start difference. First operand has 188 places, 282 transitions, 1982 flow. Second operand 19 states and 1296 transitions. [2021-11-20 07:10:09,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 945 transitions, 8332 flow [2021-11-20 07:10:09,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 945 transitions, 8086 flow, removed 123 selfloop flow, removed 0 redundant places. [2021-11-20 07:10:09,308 INFO L242 Difference]: Finished difference. Result has 222 places, 316 transitions, 2152 flow [2021-11-20 07:10:09,309 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2152, PETRI_PLACES=222, PETRI_TRANSITIONS=316} [2021-11-20 07:10:09,309 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 119 predicate places. [2021-11-20 07:10:09,310 INFO L470 AbstractCegarLoop]: Abstraction has has 222 places, 316 transitions, 2152 flow [2021-11-20 07:10:09,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:09,310 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:09,316 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:09,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:09,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:10:09,532 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:10:09,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:09,533 INFO L85 PathProgramCache]: Analyzing trace with hash 473531326, now seen corresponding path program 2 times [2021-11-20 07:10:09,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:09,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929828250] [2021-11-20 07:10:09,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:09,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-20 07:10:10,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:10,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929828250] [2021-11-20 07:10:10,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929828250] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:10:10,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119385637] [2021-11-20 07:10:10,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:10:10,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:10:10,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:10:10,076 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:10:10,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 07:10:10,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 07:10:10,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:10:10,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 07:10:10,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:10,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 07:10:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-20 07:10:10,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:10:10,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119385637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:10,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:10:10,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [18] total 26 [2021-11-20 07:10:10,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182978147] [2021-11-20 07:10:10,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:10,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:10:10,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:10,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:10:10,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-11-20 07:10:10,695 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2021-11-20 07:10:10,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 316 transitions, 2152 flow. Second operand has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:10,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:10,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2021-11-20 07:10:10,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:15,061 INFO L129 PetriNetUnfolder]: 5835/15614 cut-off events. [2021-11-20 07:10:15,062 INFO L130 PetriNetUnfolder]: For 31821/31833 co-relation queries the response was YES. [2021-11-20 07:10:15,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52053 conditions, 15614 events. 5835/15614 cut-off events. For 31821/31833 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 135579 event pairs, 1276 based on Foata normal form. 61/15614 useless extension candidates. Maximal degree in co-relation 51812. Up to 4319 conditions per place. [2021-11-20 07:10:15,246 INFO L132 encePairwiseOnDemand]: 92/106 looper letters, 742 selfloop transitions, 34 changer transitions 5/860 dead transitions. [2021-11-20 07:10:15,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 860 transitions, 7698 flow [2021-11-20 07:10:15,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 07:10:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-20 07:10:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 857 transitions. [2021-11-20 07:10:15,250 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6737421383647799 [2021-11-20 07:10:15,251 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 857 transitions. [2021-11-20 07:10:15,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 857 transitions. [2021-11-20 07:10:15,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:15,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 857 transitions. [2021-11-20 07:10:15,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 71.41666666666667) internal successors, (857), 12 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:15,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 106.0) internal successors, (1378), 13 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:15,257 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 106.0) internal successors, (1378), 13 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:15,258 INFO L186 Difference]: Start difference. First operand has 222 places, 316 transitions, 2152 flow. Second operand 12 states and 857 transitions. [2021-11-20 07:10:15,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 860 transitions, 7698 flow [2021-11-20 07:10:15,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 860 transitions, 7697 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-20 07:10:15,439 INFO L242 Difference]: Finished difference. Result has 240 places, 331 transitions, 2402 flow [2021-11-20 07:10:15,441 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2402, PETRI_PLACES=240, PETRI_TRANSITIONS=331} [2021-11-20 07:10:15,442 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 137 predicate places. [2021-11-20 07:10:15,442 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 331 transitions, 2402 flow [2021-11-20 07:10:15,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:15,442 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:15,443 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:15,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:15,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 07:10:15,668 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:10:15,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:15,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1922416230, now seen corresponding path program 3 times [2021-11-20 07:10:15,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:15,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649037569] [2021-11-20 07:10:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:15,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-20 07:10:15,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:15,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649037569] [2021-11-20 07:10:15,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649037569] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:10:15,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003089768] [2021-11-20 07:10:15,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:10:15,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:10:15,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:10:15,994 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:10:15,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 07:10:16,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-20 07:10:16,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:10:16,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 07:10:16,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:16,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 07:10:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-20 07:10:16,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:10:16,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003089768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:16,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:10:16,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-11-20 07:10:16,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081392391] [2021-11-20 07:10:16,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:16,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:10:16,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:16,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:10:16,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:10:16,494 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2021-11-20 07:10:16,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 331 transitions, 2402 flow. Second operand has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:16,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:16,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2021-11-20 07:10:16,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:21,481 INFO L129 PetriNetUnfolder]: 6820/17943 cut-off events. [2021-11-20 07:10:21,481 INFO L130 PetriNetUnfolder]: For 45478/45505 co-relation queries the response was YES. [2021-11-20 07:10:21,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63680 conditions, 17943 events. 6820/17943 cut-off events. For 45478/45505 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 158833 event pairs, 2070 based on Foata normal form. 18/17879 useless extension candidates. Maximal degree in co-relation 63430. Up to 6295 conditions per place. [2021-11-20 07:10:21,753 INFO L132 encePairwiseOnDemand]: 92/106 looper letters, 957 selfloop transitions, 32 changer transitions 0/1068 dead transitions. [2021-11-20 07:10:21,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1068 transitions, 10211 flow [2021-11-20 07:10:21,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 07:10:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-20 07:10:21,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 898 transitions. [2021-11-20 07:10:21,757 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7059748427672956 [2021-11-20 07:10:21,757 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 898 transitions. [2021-11-20 07:10:21,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 898 transitions. [2021-11-20 07:10:21,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:21,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 898 transitions. [2021-11-20 07:10:21,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 74.83333333333333) internal successors, (898), 12 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:21,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 106.0) internal successors, (1378), 13 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:21,772 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 106.0) internal successors, (1378), 13 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:21,773 INFO L186 Difference]: Start difference. First operand has 240 places, 331 transitions, 2402 flow. Second operand 12 states and 898 transitions. [2021-11-20 07:10:21,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 1068 transitions, 10211 flow [2021-11-20 07:10:22,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 1068 transitions, 10074 flow, removed 68 selfloop flow, removed 1 redundant places. [2021-11-20 07:10:22,076 INFO L242 Difference]: Finished difference. Result has 259 places, 352 transitions, 2662 flow [2021-11-20 07:10:22,077 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2662, PETRI_PLACES=259, PETRI_TRANSITIONS=352} [2021-11-20 07:10:22,078 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 156 predicate places. [2021-11-20 07:10:22,079 INFO L470 AbstractCegarLoop]: Abstraction has has 259 places, 352 transitions, 2662 flow [2021-11-20 07:10:22,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:22,079 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:22,081 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:22,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:22,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 07:10:22,296 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:10:22,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:22,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1799702945, now seen corresponding path program 1 times [2021-11-20 07:10:22,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:22,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746224368] [2021-11-20 07:10:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:22,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:22,553 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-20 07:10:22,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:22,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746224368] [2021-11-20 07:10:22,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746224368] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:10:22,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373958254] [2021-11-20 07:10:22,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:22,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:10:22,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:10:22,555 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:10:22,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 07:10:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:22,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 07:10:22,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:23,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 07:10:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-20 07:10:23,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:10:23,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373958254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:23,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:10:23,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-11-20 07:10:23,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297222237] [2021-11-20 07:10:23,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:23,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:10:23,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:23,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:10:23,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:10:23,379 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2021-11-20 07:10:23,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 352 transitions, 2662 flow. Second operand has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:23,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:23,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2021-11-20 07:10:23,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:29,831 INFO L129 PetriNetUnfolder]: 7113/19069 cut-off events. [2021-11-20 07:10:29,831 INFO L130 PetriNetUnfolder]: For 53923/53962 co-relation queries the response was YES. [2021-11-20 07:10:30,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68378 conditions, 19069 events. 7113/19069 cut-off events. For 53923/53962 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 173023 event pairs, 1392 based on Foata normal form. 48/19040 useless extension candidates. Maximal degree in co-relation 68118. Up to 4343 conditions per place. [2021-11-20 07:10:30,154 INFO L132 encePairwiseOnDemand]: 91/106 looper letters, 860 selfloop transitions, 103 changer transitions 9/1051 dead transitions. [2021-11-20 07:10:30,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1051 transitions, 9958 flow [2021-11-20 07:10:30,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 07:10:30,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-11-20 07:10:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1914 transitions. [2021-11-20 07:10:30,160 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5824710894704809 [2021-11-20 07:10:30,161 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1914 transitions. [2021-11-20 07:10:30,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1914 transitions. [2021-11-20 07:10:30,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:30,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1914 transitions. [2021-11-20 07:10:30,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 61.74193548387097) internal successors, (1914), 31 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:30,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 106.0) internal successors, (3392), 32 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:30,176 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 106.0) internal successors, (3392), 32 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:30,177 INFO L186 Difference]: Start difference. First operand has 259 places, 352 transitions, 2662 flow. Second operand 31 states and 1914 transitions. [2021-11-20 07:10:30,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 1051 transitions, 9958 flow [2021-11-20 07:10:30,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1051 transitions, 9901 flow, removed 28 selfloop flow, removed 1 redundant places. [2021-11-20 07:10:30,517 INFO L242 Difference]: Finished difference. Result has 313 places, 409 transitions, 3625 flow [2021-11-20 07:10:30,519 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=2627, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3625, PETRI_PLACES=313, PETRI_TRANSITIONS=409} [2021-11-20 07:10:30,520 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 210 predicate places. [2021-11-20 07:10:30,520 INFO L470 AbstractCegarLoop]: Abstraction has has 313 places, 409 transitions, 3625 flow [2021-11-20 07:10:30,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:30,521 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:30,521 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:30,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:30,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 07:10:30,736 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:10:30,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:30,737 INFO L85 PathProgramCache]: Analyzing trace with hash -470194996, now seen corresponding path program 4 times [2021-11-20 07:10:30,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:30,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117993241] [2021-11-20 07:10:30,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:30,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-20 07:10:31,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:31,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117993241] [2021-11-20 07:10:31,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117993241] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:10:31,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589529701] [2021-11-20 07:10:31,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 07:10:31,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:10:31,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:10:31,300 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:10:31,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 07:10:31,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 07:10:31,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:10:31,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 07:10:31,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:31,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 07:10:31,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 07:10:31,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:31,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 07:10:31,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:31,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:31,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:31,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 07:10:31,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:31,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:31,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:31,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:31,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:31,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:31,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 07:10:31,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:10:32,000 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:10:32,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 11 [2021-11-20 07:10:32,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-20 07:10:32,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2021-11-20 07:10:32,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 78 [2021-11-20 07:10:32,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:10:32,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 90 [2021-11-20 07:10:32,630 INFO L354 Elim1Store]: treesize reduction 516, result has 10.7 percent of original size [2021-11-20 07:10:32,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 84 treesize of output 97 [2021-11-20 07:10:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-20 07:10:32,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:10:32,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589529701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:32,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:10:32,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [11] total 28 [2021-11-20 07:10:32,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444935863] [2021-11-20 07:10:32,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:32,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 07:10:32,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:32,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 07:10:32,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:10:32,734 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 106 [2021-11-20 07:10:32,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 409 transitions, 3625 flow. Second operand has 19 states, 19 states have (on average 50.68421052631579) internal successors, (963), 19 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:32,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:32,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 106 [2021-11-20 07:10:32,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:40,168 INFO L129 PetriNetUnfolder]: 7223/19441 cut-off events. [2021-11-20 07:10:40,168 INFO L130 PetriNetUnfolder]: For 81968/82012 co-relation queries the response was YES. [2021-11-20 07:10:40,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74863 conditions, 19441 events. 7223/19441 cut-off events. For 81968/82012 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 177808 event pairs, 2380 based on Foata normal form. 16/19362 useless extension candidates. Maximal degree in co-relation 74578. Up to 6478 conditions per place. [2021-11-20 07:10:40,809 INFO L132 encePairwiseOnDemand]: 78/106 looper letters, 852 selfloop transitions, 122 changer transitions 0/1054 dead transitions. [2021-11-20 07:10:40,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 1054 transitions, 10853 flow [2021-11-20 07:10:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:10:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 07:10:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1425 transitions. [2021-11-20 07:10:40,814 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6401617250673854 [2021-11-20 07:10:40,814 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1425 transitions. [2021-11-20 07:10:40,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1425 transitions. [2021-11-20 07:10:40,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:40,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1425 transitions. [2021-11-20 07:10:40,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.85714285714286) internal successors, (1425), 21 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 106.0) internal successors, (2332), 22 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,824 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 106.0) internal successors, (2332), 22 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:40,824 INFO L186 Difference]: Start difference. First operand has 313 places, 409 transitions, 3625 flow. Second operand 21 states and 1425 transitions. [2021-11-20 07:10:40,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 1054 transitions, 10853 flow [2021-11-20 07:10:41,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1054 transitions, 10459 flow, removed 138 selfloop flow, removed 6 redundant places. [2021-11-20 07:10:41,200 INFO L242 Difference]: Finished difference. Result has 346 places, 497 transitions, 4941 flow [2021-11-20 07:10:41,201 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4941, PETRI_PLACES=346, PETRI_TRANSITIONS=497} [2021-11-20 07:10:41,201 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 243 predicate places. [2021-11-20 07:10:41,202 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 497 transitions, 4941 flow [2021-11-20 07:10:41,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.68421052631579) internal successors, (963), 19 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:41,202 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:41,203 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:41,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:10:41,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 07:10:41,416 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:10:41,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:41,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1280308184, now seen corresponding path program 5 times [2021-11-20 07:10:41,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:41,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575444198] [2021-11-20 07:10:41,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:41,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-20 07:10:41,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:41,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575444198] [2021-11-20 07:10:41,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575444198] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:10:41,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27416070] [2021-11-20 07:10:41,853 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 07:10:41,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:10:41,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:10:41,854 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:10:41,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 07:10:41,950 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-20 07:10:41,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:10:41,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 07:10:41,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:42,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 07:10:42,654 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-20 07:10:42,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:10:42,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27416070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:42,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:10:42,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [18] total 26 [2021-11-20 07:10:42,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977150088] [2021-11-20 07:10:42,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:42,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:10:42,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:42,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:10:42,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2021-11-20 07:10:42,656 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2021-11-20 07:10:42,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 497 transitions, 4941 flow. Second operand has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:42,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:42,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2021-11-20 07:10:42,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:10:50,736 INFO L129 PetriNetUnfolder]: 8128/21602 cut-off events. [2021-11-20 07:10:50,737 INFO L130 PetriNetUnfolder]: For 123003/123094 co-relation queries the response was YES. [2021-11-20 07:10:51,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90105 conditions, 21602 events. 8128/21602 cut-off events. For 123003/123094 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 200655 event pairs, 2272 based on Foata normal form. 45/21560 useless extension candidates. Maximal degree in co-relation 89801. Up to 8208 conditions per place. [2021-11-20 07:10:51,537 INFO L132 encePairwiseOnDemand]: 92/106 looper letters, 993 selfloop transitions, 83 changer transitions 2/1157 dead transitions. [2021-11-20 07:10:51,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 1157 transitions, 13389 flow [2021-11-20 07:10:51,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:10:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-20 07:10:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1037 transitions. [2021-11-20 07:10:51,540 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6987870619946092 [2021-11-20 07:10:51,540 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1037 transitions. [2021-11-20 07:10:51,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1037 transitions. [2021-11-20 07:10:51,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:10:51,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1037 transitions. [2021-11-20 07:10:51,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 74.07142857142857) internal successors, (1037), 14 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:51,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 106.0) internal successors, (1590), 15 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:51,547 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 106.0) internal successors, (1590), 15 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:51,548 INFO L186 Difference]: Start difference. First operand has 346 places, 497 transitions, 4941 flow. Second operand 14 states and 1037 transitions. [2021-11-20 07:10:51,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 1157 transitions, 13389 flow [2021-11-20 07:10:52,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 1157 transitions, 12895 flow, removed 246 selfloop flow, removed 1 redundant places. [2021-11-20 07:10:52,151 INFO L242 Difference]: Finished difference. Result has 366 places, 527 transitions, 5559 flow [2021-11-20 07:10:52,152 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=4769, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5559, PETRI_PLACES=366, PETRI_TRANSITIONS=527} [2021-11-20 07:10:52,153 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 263 predicate places. [2021-11-20 07:10:52,153 INFO L470 AbstractCegarLoop]: Abstraction has has 366 places, 527 transitions, 5559 flow [2021-11-20 07:10:52,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:52,153 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:10:52,154 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:10:52,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-20 07:10:52,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 07:10:52,356 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:10:52,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:10:52,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1663196472, now seen corresponding path program 6 times [2021-11-20 07:10:52,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:10:52,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725929316] [2021-11-20 07:10:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:10:52,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:10:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:10:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-20 07:10:52,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:10:52,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725929316] [2021-11-20 07:10:52,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725929316] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:10:52,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021694712] [2021-11-20 07:10:52,673 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 07:10:52,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:10:52,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:10:52,674 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:10:52,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 07:10:52,737 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-11-20 07:10:52,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:10:52,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 07:10:52,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:10:53,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 07:10:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-20 07:10:53,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:10:53,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021694712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:10:53,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:10:53,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-11-20 07:10:53,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224705737] [2021-11-20 07:10:53,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:10:53,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:10:53,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:10:53,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:10:53,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:10:53,218 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2021-11-20 07:10:53,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 527 transitions, 5559 flow. Second operand has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:10:53,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:10:53,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2021-11-20 07:10:53,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:11:02,029 INFO L129 PetriNetUnfolder]: 8118/21649 cut-off events. [2021-11-20 07:11:02,029 INFO L130 PetriNetUnfolder]: For 116618/116719 co-relation queries the response was YES. [2021-11-20 07:11:02,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89261 conditions, 21649 events. 8118/21649 cut-off events. For 116618/116719 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 202286 event pairs, 2559 based on Foata normal form. 54/21591 useless extension candidates. Maximal degree in co-relation 88948. Up to 6478 conditions per place. [2021-11-20 07:11:02,571 INFO L132 encePairwiseOnDemand]: 92/106 looper letters, 854 selfloop transitions, 91 changer transitions 0/1024 dead transitions. [2021-11-20 07:11:02,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 1024 transitions, 11720 flow [2021-11-20 07:11:02,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 07:11:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-20 07:11:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 875 transitions. [2021-11-20 07:11:02,573 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6878930817610063 [2021-11-20 07:11:02,573 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 875 transitions. [2021-11-20 07:11:02,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 875 transitions. [2021-11-20 07:11:02,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:11:02,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 875 transitions. [2021-11-20 07:11:02,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 72.91666666666667) internal successors, (875), 12 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:02,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 106.0) internal successors, (1378), 13 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:02,580 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 106.0) internal successors, (1378), 13 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:02,580 INFO L186 Difference]: Start difference. First operand has 366 places, 527 transitions, 5559 flow. Second operand 12 states and 875 transitions. [2021-11-20 07:11:02,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 1024 transitions, 11720 flow [2021-11-20 07:11:03,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 1024 transitions, 11426 flow, removed 124 selfloop flow, removed 9 redundant places. [2021-11-20 07:11:03,207 INFO L242 Difference]: Finished difference. Result has 365 places, 516 transitions, 5463 flow [2021-11-20 07:11:03,207 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=5168, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5463, PETRI_PLACES=365, PETRI_TRANSITIONS=516} [2021-11-20 07:11:03,208 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 262 predicate places. [2021-11-20 07:11:03,208 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 516 transitions, 5463 flow [2021-11-20 07:11:03,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:03,209 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:11:03,209 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:03,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:03,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:03,424 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-20 07:11:03,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:03,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1462947212, now seen corresponding path program 7 times [2021-11-20 07:11:03,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:03,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540185863] [2021-11-20 07:11:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:03,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-20 07:11:03,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:03,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540185863] [2021-11-20 07:11:03,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540185863] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:11:03,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227525818] [2021-11-20 07:11:03,870 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 07:11:03,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:03,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:03,871 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:04,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e026766-46c5-4990-8810-253389367d17/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 07:11:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:04,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 07:11:04,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:04,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 07:11:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-20 07:11:05,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:05,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227525818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:05,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:11:05,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [18] total 26 [2021-11-20 07:11:05,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717165349] [2021-11-20 07:11:05,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:05,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:11:05,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:05,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:11:05,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2021-11-20 07:11:05,023 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 106 [2021-11-20 07:11:05,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 516 transitions, 5463 flow. Second operand has 10 states, 10 states have (on average 51.3) internal successors, (513), 10 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:11:05,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:11:05,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 106 [2021-11-20 07:11:05,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand