./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_44-malloc_sound.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_44-malloc_sound.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa --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 8d85985769788fe03edac99b0e2515850ec4c864737a042b27bc3e336515bcde --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:33:05,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:33:05,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:33:05,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:33:05,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:33:05,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:33:05,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:33:05,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:33:05,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:33:05,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:33:05,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:33:05,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:33:05,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:33:05,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:33:05,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:33:05,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:33:05,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:33:05,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:33:05,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:33:05,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:33:05,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:33:05,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:33:05,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:33:05,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:33:05,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:33:05,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:33:05,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:33:05,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:33:05,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:33:05,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:33:05,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:33:05,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:33:05,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:33:05,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:33:05,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:33:05,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:33:05,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:33:05,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:33:05,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:33:05,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:33:05,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:33:05,209 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/config/svcomp-DataRace-32bit-Automizer_Default.epf [2021-12-06 23:33:05,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:33:05,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:33:05,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:33:05,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:33:05,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:33:05,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:33:05,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:33:05,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:33:05,230 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:33:05,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:33:05,231 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:33:05,231 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 23:33:05,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:33:05,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:33:05,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:33:05,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:33:05,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:33:05,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:33:05,232 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-12-06 23:33:05,232 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:33:05,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:33:05,237 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:33:05,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:33:05,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:33:05,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:33:05,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:33:05,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:33:05,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:33:05,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:33:05,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:33:05,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:33:05,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:33:05,239 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:33:05,239 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:33:05,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:33:05,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:33:05,240 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_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d85985769788fe03edac99b0e2515850ec4c864737a042b27bc3e336515bcde [2021-12-06 23:33:05,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:33:05,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:33:05,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:33:05,440 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:33:05,441 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:33:05,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/goblint-regression/04-mutex_44-malloc_sound.i [2021-12-06 23:33:05,485 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/data/c0effbeaf/a9b8025f3fd34681bd4ed498fd3c6f61/FLAGf274f6b2d [2021-12-06 23:33:05,961 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:33:05,962 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/sv-benchmarks/c/goblint-regression/04-mutex_44-malloc_sound.i [2021-12-06 23:33:05,974 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/data/c0effbeaf/a9b8025f3fd34681bd4ed498fd3c6f61/FLAGf274f6b2d [2021-12-06 23:33:06,472 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/data/c0effbeaf/a9b8025f3fd34681bd4ed498fd3c6f61 [2021-12-06 23:33:06,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:33:06,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:33:06,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:33:06,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:33:06,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:33:06,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:33:06" (1/1) ... [2021-12-06 23:33:06,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5656fddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:33:06, skipping insertion in model container [2021-12-06 23:33:06,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:33:06" (1/1) ... [2021-12-06 23:33:06,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:33:06,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:33:06,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:33:06,772 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:33:06,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:33:06,846 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:33:06,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:33:06 WrapperNode [2021-12-06 23:33:06,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:33:06,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:33:06,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:33:06,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:33:06,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:33:06" (1/1) ... [2021-12-06 23:33:06,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:33:06" (1/1) ... [2021-12-06 23:33:06,880 INFO L137 Inliner]: procedures = 263, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2021-12-06 23:33:06,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:33:06,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:33:06,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:33:06,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:33:06,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:33:06" (1/1) ... [2021-12-06 23:33:06,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:33:06" (1/1) ... [2021-12-06 23:33:06,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:33:06" (1/1) ... [2021-12-06 23:33:06,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:33:06" (1/1) ... [2021-12-06 23:33:06,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:33:06" (1/1) ... [2021-12-06 23:33:06,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:33:06" (1/1) ... [2021-12-06 23:33:06,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:33:06" (1/1) ... [2021-12-06 23:33:06,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:33:06,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:33:06,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:33:06,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:33:06,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:33:06" (1/1) ... [2021-12-06 23:33:06,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:33:06,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:33:06,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:33:06,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:33:06,973 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-06 23:33:06,974 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-06 23:33:06,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:33:06,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:33:06,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:33:06,974 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-06 23:33:06,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:33:06,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:33:06,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:33:06,976 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 23:33:07,054 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:33:07,055 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:33:07,167 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:33:07,173 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:33:07,173 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 23:33:07,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:33:07 BoogieIcfgContainer [2021-12-06 23:33:07,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:33:07,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:33:07,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:33:07,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:33:07,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:33:06" (1/3) ... [2021-12-06 23:33:07,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20486a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:33:07, skipping insertion in model container [2021-12-06 23:33:07,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:33:06" (2/3) ... [2021-12-06 23:33:07,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20486a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:33:07, skipping insertion in model container [2021-12-06 23:33:07,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:33:07" (3/3) ... [2021-12-06 23:33:07,180 INFO L111 eAbstractionObserver]: Analyzing ICFG 04-mutex_44-malloc_sound.i [2021-12-06 23:33:07,183 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 23:33:07,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:33:07,184 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-06 23:33:07,184 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 23:33:07,204 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#in~x.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,204 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#in~x.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,204 WARN L322 ript$VariableManager]: TermVariabe fThread1of1ForFork0_~x.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,204 WARN L322 ript$VariableManager]: TermVariabe fThread1of1ForFork0_~x.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,204 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#in~x.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,204 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#in~x.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,204 WARN L322 ript$VariableManager]: TermVariabe fThread1of1ForFork0_~x.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,204 WARN L322 ript$VariableManager]: TermVariabe fThread1of1ForFork0_~x.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,205 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,205 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,205 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,205 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,205 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,205 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,206 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,206 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,206 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,206 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,206 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,206 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,206 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,207 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,207 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,207 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,207 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,207 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,207 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,207 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,208 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,208 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,208 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,208 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,210 WARN L322 ript$VariableManager]: TermVariabe fThread1of1ForFork0_~x.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,210 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,211 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,211 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,211 WARN L322 ript$VariableManager]: TermVariabe fThread1of1ForFork0_~x.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,211 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,211 WARN L322 ript$VariableManager]: TermVariabe |fThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:33:07,213 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 23:33:07,250 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:33:07,256 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 [2021-12-06 23:33:07,256 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-12-06 23:33:07,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 92 transitions, 189 flow [2021-12-06 23:33:07,294 INFO L129 PetriNetUnfolder]: 4/91 cut-off events. [2021-12-06 23:33:07,294 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 23:33:07,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 4/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 159 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2021-12-06 23:33:07,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 92 transitions, 189 flow [2021-12-06 23:33:07,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 185 flow [2021-12-06 23:33:07,309 INFO L129 PetriNetUnfolder]: 2/47 cut-off events. [2021-12-06 23:33:07,309 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 23:33:07,309 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:33:07,310 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] [2021-12-06 23:33:07,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2021-12-06 23:33:07,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:07,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2047523023, now seen corresponding path program 1 times [2021-12-06 23:33:07,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:07,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22653089] [2021-12-06 23:33:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:07,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:33:07,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:07,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22653089] [2021-12-06 23:33:07,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22653089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:07,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:33:07,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:33:07,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986473596] [2021-12-06 23:33:07,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:07,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:33:07,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:07,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:33:07,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:33:07,508 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 92 [2021-12-06 23:33:07,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:07,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:33:07,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 92 [2021-12-06 23:33:07,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:33:07,552 INFO L129 PetriNetUnfolder]: 3/99 cut-off events. [2021-12-06 23:33:07,552 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-06 23:33:07,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 99 events. 3/99 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 69. Up to 13 conditions per place. [2021-12-06 23:33:07,553 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 15 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2021-12-06 23:33:07,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 95 transitions, 227 flow [2021-12-06 23:33:07,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:33:07,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:33:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2021-12-06 23:33:07,565 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9384057971014492 [2021-12-06 23:33:07,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2021-12-06 23:33:07,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2021-12-06 23:33:07,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:33:07,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2021-12-06 23:33:07,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:07,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:07,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:07,577 INFO L186 Difference]: Start difference. First operand has 91 places, 91 transitions, 185 flow. Second operand 3 states and 259 transitions. [2021-12-06 23:33:07,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 95 transitions, 227 flow [2021-12-06 23:33:07,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 23:33:07,583 INFO L242 Difference]: Finished difference. Result has 93 places, 91 transitions, 198 flow [2021-12-06 23:33:07,584 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2021-12-06 23:33:07,587 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2021-12-06 23:33:07,587 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 198 flow [2021-12-06 23:33:07,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:07,587 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:33:07,588 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:07,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:33:07,588 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2021-12-06 23:33:07,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:07,589 INFO L85 PathProgramCache]: Analyzing trace with hash -521851416, now seen corresponding path program 1 times [2021-12-06 23:33:07,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:07,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487543913] [2021-12-06 23:33:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:07,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:33:07,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:07,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487543913] [2021-12-06 23:33:07,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487543913] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:33:07,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544140111] [2021-12-06 23:33:07,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:07,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:07,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:33:07,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:33:07,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:33:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:07,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:33:07,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:07,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:33:07,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:33:07,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544140111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:07,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:33:07,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-06 23:33:07,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521243886] [2021-12-06 23:33:07,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:07,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:33:07,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:07,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:33:07,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:33:07,814 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 92 [2021-12-06 23:33:07,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:07,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:33:07,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 92 [2021-12-06 23:33:07,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:33:07,843 INFO L129 PetriNetUnfolder]: 3/98 cut-off events. [2021-12-06 23:33:07,843 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-06 23:33:07,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 98 events. 3/98 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 139 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 87. Up to 8 conditions per place. [2021-12-06 23:33:07,844 INFO L132 encePairwiseOnDemand]: 89/92 looper letters, 7 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2021-12-06 23:33:07,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 90 transitions, 214 flow [2021-12-06 23:33:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:33:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:33:07,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2021-12-06 23:33:07,847 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-12-06 23:33:07,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2021-12-06 23:33:07,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2021-12-06 23:33:07,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:33:07,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2021-12-06 23:33:07,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:07,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:07,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:07,853 INFO L186 Difference]: Start difference. First operand has 93 places, 91 transitions, 198 flow. Second operand 3 states and 253 transitions. [2021-12-06 23:33:07,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 90 transitions, 214 flow [2021-12-06 23:33:07,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 23:33:07,856 INFO L242 Difference]: Finished difference. Result has 93 places, 90 transitions, 198 flow [2021-12-06 23:33:07,857 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2021-12-06 23:33:07,857 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2021-12-06 23:33:07,857 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 198 flow [2021-12-06 23:33:07,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:07,858 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:33:07,858 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] [2021-12-06 23:33:07,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:33:08,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:08,060 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2021-12-06 23:33:08,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:08,062 INFO L85 PathProgramCache]: Analyzing trace with hash -976068887, now seen corresponding path program 1 times [2021-12-06 23:33:08,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:08,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040654676] [2021-12-06 23:33:08,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:08,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:33:08,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:08,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040654676] [2021-12-06 23:33:08,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040654676] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:33:08,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641917705] [2021-12-06 23:33:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:08,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:08,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:33:08,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:33:08,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:33:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:08,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:33:08,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:33:08,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:33:08,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641917705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:08,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:33:08,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-06 23:33:08,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727601664] [2021-12-06 23:33:08,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:08,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:33:08,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:08,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:33:08,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:33:08,322 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 92 [2021-12-06 23:33:08,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:08,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:33:08,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 92 [2021-12-06 23:33:08,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:33:08,374 INFO L129 PetriNetUnfolder]: 40/284 cut-off events. [2021-12-06 23:33:08,374 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 23:33:08,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 284 events. 40/284 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1223 event pairs, 12 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 380. Up to 54 conditions per place. [2021-12-06 23:33:08,376 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 17 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2021-12-06 23:33:08,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 100 transitions, 264 flow [2021-12-06 23:33:08,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:33:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:33:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2021-12-06 23:33:08,378 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9384057971014492 [2021-12-06 23:33:08,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2021-12-06 23:33:08,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2021-12-06 23:33:08,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:33:08,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2021-12-06 23:33:08,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:08,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:08,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:08,381 INFO L186 Difference]: Start difference. First operand has 93 places, 90 transitions, 198 flow. Second operand 3 states and 259 transitions. [2021-12-06 23:33:08,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 100 transitions, 264 flow [2021-12-06 23:33:08,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 100 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 23:33:08,384 INFO L242 Difference]: Finished difference. Result has 95 places, 96 transitions, 246 flow [2021-12-06 23:33:08,384 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2021-12-06 23:33:08,384 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 4 predicate places. [2021-12-06 23:33:08,384 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 246 flow [2021-12-06 23:33:08,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:08,385 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:33:08,385 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:08,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 23:33:08,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:08,587 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2021-12-06 23:33:08,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:08,588 INFO L85 PathProgramCache]: Analyzing trace with hash 967991590, now seen corresponding path program 1 times [2021-12-06 23:33:08,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:08,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514744288] [2021-12-06 23:33:08,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:08,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:33:08,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:08,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514744288] [2021-12-06 23:33:08,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514744288] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:33:08,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33496307] [2021-12-06 23:33:08,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:08,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:08,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:33:08,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:33:08,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:33:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:08,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:33:08,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:33:08,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:33:08,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33496307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:08,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:33:08,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-06 23:33:08,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954329202] [2021-12-06 23:33:08,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:08,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:33:08,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:33:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:33:08,820 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 92 [2021-12-06 23:33:08,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 96 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:08,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:33:08,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 92 [2021-12-06 23:33:08,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:33:08,852 INFO L129 PetriNetUnfolder]: 12/189 cut-off events. [2021-12-06 23:33:08,852 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-12-06 23:33:08,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 189 events. 12/189 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 670 event pairs, 3 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 200. Up to 18 conditions per place. [2021-12-06 23:33:08,860 INFO L132 encePairwiseOnDemand]: 89/92 looper letters, 7 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2021-12-06 23:33:08,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 95 transitions, 262 flow [2021-12-06 23:33:08,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:33:08,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:33:08,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2021-12-06 23:33:08,862 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-12-06 23:33:08,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2021-12-06 23:33:08,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2021-12-06 23:33:08,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:33:08,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2021-12-06 23:33:08,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:08,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:08,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:08,865 INFO L186 Difference]: Start difference. First operand has 95 places, 96 transitions, 246 flow. Second operand 3 states and 253 transitions. [2021-12-06 23:33:08,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 95 transitions, 262 flow [2021-12-06 23:33:08,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 95 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 23:33:08,869 INFO L242 Difference]: Finished difference. Result has 94 places, 95 transitions, 236 flow [2021-12-06 23:33:08,869 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=94, PETRI_TRANSITIONS=95} [2021-12-06 23:33:08,870 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2021-12-06 23:33:08,870 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 236 flow [2021-12-06 23:33:08,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:08,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:33:08,870 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, 1] [2021-12-06 23:33:08,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 23:33:09,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:09,072 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2021-12-06 23:33:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:09,074 INFO L85 PathProgramCache]: Analyzing trace with hash 268340454, now seen corresponding path program 1 times [2021-12-06 23:33:09,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:09,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257360473] [2021-12-06 23:33:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:09,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:33:09,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:09,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257360473] [2021-12-06 23:33:09,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257360473] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:33:09,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561710766] [2021-12-06 23:33:09,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:09,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:09,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:33:09,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:33:09,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:33:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:09,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:33:09,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:33:09,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:33:09,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561710766] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:09,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:33:09,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-06 23:33:09,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377207058] [2021-12-06 23:33:09,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:09,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:33:09,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:09,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:33:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:33:09,351 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-12-06 23:33:09,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:09,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:33:09,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-12-06 23:33:09,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:33:09,418 INFO L129 PetriNetUnfolder]: 58/375 cut-off events. [2021-12-06 23:33:09,418 INFO L130 PetriNetUnfolder]: For 33/38 co-relation queries the response was YES. [2021-12-06 23:33:09,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 375 events. 58/375 cut-off events. For 33/38 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1937 event pairs, 20 based on Foata normal form. 2/333 useless extension candidates. Maximal degree in co-relation 574. Up to 102 conditions per place. [2021-12-06 23:33:09,422 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 24 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2021-12-06 23:33:09,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 105 transitions, 330 flow [2021-12-06 23:33:09,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:33:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:33:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2021-12-06 23:33:09,424 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9130434782608695 [2021-12-06 23:33:09,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2021-12-06 23:33:09,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2021-12-06 23:33:09,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:33:09,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2021-12-06 23:33:09,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:09,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:09,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:09,428 INFO L186 Difference]: Start difference. First operand has 94 places, 95 transitions, 236 flow. Second operand 3 states and 252 transitions. [2021-12-06 23:33:09,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 105 transitions, 330 flow [2021-12-06 23:33:09,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 105 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 23:33:09,433 INFO L242 Difference]: Finished difference. Result has 96 places, 100 transitions, 288 flow [2021-12-06 23:33:09,433 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=96, PETRI_TRANSITIONS=100} [2021-12-06 23:33:09,434 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2021-12-06 23:33:09,435 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 100 transitions, 288 flow [2021-12-06 23:33:09,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:09,435 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:33:09,435 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, 1, 1] [2021-12-06 23:33:09,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 23:33:09,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:09,637 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2021-12-06 23:33:09,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:09,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1859173889, now seen corresponding path program 1 times [2021-12-06 23:33:09,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:09,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441554950] [2021-12-06 23:33:09,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:09,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:33:09,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:09,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441554950] [2021-12-06 23:33:09,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441554950] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:33:09,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658200073] [2021-12-06 23:33:09,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:09,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:09,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:33:09,787 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:33:09,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:33:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:09,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:33:09,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:33:09,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:33:09,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658200073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:09,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:33:09,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-06 23:33:09,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284772902] [2021-12-06 23:33:09,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:09,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:33:09,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:09,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:33:09,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:33:09,887 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-06 23:33:09,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 100 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:09,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:33:09,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-06 23:33:09,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:33:09,947 INFO L129 PetriNetUnfolder]: 60/360 cut-off events. [2021-12-06 23:33:09,947 INFO L130 PetriNetUnfolder]: For 141/143 co-relation queries the response was YES. [2021-12-06 23:33:09,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 360 events. 60/360 cut-off events. For 141/143 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1829 event pairs, 17 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 617. Up to 101 conditions per place. [2021-12-06 23:33:09,951 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 28 selfloop transitions, 9 changer transitions 0/111 dead transitions. [2021-12-06 23:33:09,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 111 transitions, 412 flow [2021-12-06 23:33:09,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:33:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:33:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2021-12-06 23:33:09,952 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9057971014492754 [2021-12-06 23:33:09,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2021-12-06 23:33:09,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2021-12-06 23:33:09,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:33:09,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2021-12-06 23:33:09,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:09,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:09,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:09,955 INFO L186 Difference]: Start difference. First operand has 96 places, 100 transitions, 288 flow. Second operand 3 states and 250 transitions. [2021-12-06 23:33:09,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 111 transitions, 412 flow [2021-12-06 23:33:09,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 111 transitions, 392 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 23:33:09,958 INFO L242 Difference]: Finished difference. Result has 98 places, 105 transitions, 342 flow [2021-12-06 23:33:09,959 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=98, PETRI_TRANSITIONS=105} [2021-12-06 23:33:09,959 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 7 predicate places. [2021-12-06 23:33:09,959 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 105 transitions, 342 flow [2021-12-06 23:33:09,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:09,960 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:33:09,960 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, 1, 1, 1, 1, 1] [2021-12-06 23:33:09,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 23:33:10,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:10,160 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2021-12-06 23:33:10,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:10,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1561109911, now seen corresponding path program 1 times [2021-12-06 23:33:10,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:10,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182917737] [2021-12-06 23:33:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:10,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:33:10,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:10,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182917737] [2021-12-06 23:33:10,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182917737] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:33:10,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545144381] [2021-12-06 23:33:10,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:10,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:10,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:33:10,192 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:33:10,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:33:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:10,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:33:10,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:33:10,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:33:10,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545144381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:10,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:33:10,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-06 23:33:10,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002215568] [2021-12-06 23:33:10,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:10,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:33:10,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:10,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:33:10,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:33:10,279 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 92 [2021-12-06 23:33:10,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 105 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:10,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:33:10,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 92 [2021-12-06 23:33:10,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:33:10,302 INFO L129 PetriNetUnfolder]: 32/287 cut-off events. [2021-12-06 23:33:10,303 INFO L130 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2021-12-06 23:33:10,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 287 events. 32/287 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1339 event pairs, 3 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 445. Up to 31 conditions per place. [2021-12-06 23:33:10,304 INFO L132 encePairwiseOnDemand]: 90/92 looper letters, 4 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2021-12-06 23:33:10,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 104 transitions, 350 flow [2021-12-06 23:33:10,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:33:10,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:33:10,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2021-12-06 23:33:10,305 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9347826086956522 [2021-12-06 23:33:10,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2021-12-06 23:33:10,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2021-12-06 23:33:10,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:33:10,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2021-12-06 23:33:10,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:10,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:10,308 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:10,308 INFO L186 Difference]: Start difference. First operand has 98 places, 105 transitions, 342 flow. Second operand 3 states and 258 transitions. [2021-12-06 23:33:10,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 104 transitions, 350 flow [2021-12-06 23:33:10,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 104 transitions, 332 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 23:33:10,311 INFO L242 Difference]: Finished difference. Result has 97 places, 104 transitions, 324 flow [2021-12-06 23:33:10,311 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=97, PETRI_TRANSITIONS=104} [2021-12-06 23:33:10,312 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 6 predicate places. [2021-12-06 23:33:10,312 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 104 transitions, 324 flow [2021-12-06 23:33:10,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:10,312 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:33:10,312 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, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:10,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 23:33:10,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:10,514 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2021-12-06 23:33:10,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:10,515 INFO L85 PathProgramCache]: Analyzing trace with hash -515336296, now seen corresponding path program 1 times [2021-12-06 23:33:10,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:10,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545964159] [2021-12-06 23:33:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:10,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:33:10,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:10,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545964159] [2021-12-06 23:33:10,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545964159] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:33:10,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526017204] [2021-12-06 23:33:10,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:10,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:10,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:33:10,601 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:33:10,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:33:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:10,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:33:10,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:33:10,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:33:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:33:10,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526017204] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:33:10,785 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:33:10,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-06 23:33:10,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675557872] [2021-12-06 23:33:10,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:33:10,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:33:10,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:10,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:33:10,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:33:10,788 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 92 [2021-12-06 23:33:10,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 104 transitions, 324 flow. Second operand has 10 states, 10 states have (on average 80.5) internal successors, (805), 10 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:10,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:33:10,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 92 [2021-12-06 23:33:10,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:33:10,883 INFO L129 PetriNetUnfolder]: 33/303 cut-off events. [2021-12-06 23:33:10,883 INFO L130 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2021-12-06 23:33:10,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 303 events. 33/303 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1297 event pairs, 3 based on Foata normal form. 4/292 useless extension candidates. Maximal degree in co-relation 474. Up to 31 conditions per place. [2021-12-06 23:33:10,885 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 17 selfloop transitions, 13 changer transitions 0/120 dead transitions. [2021-12-06 23:33:10,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 120 transitions, 422 flow [2021-12-06 23:33:10,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:33:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-06 23:33:10,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 892 transitions. [2021-12-06 23:33:10,889 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8814229249011858 [2021-12-06 23:33:10,889 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 892 transitions. [2021-12-06 23:33:10,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 892 transitions. [2021-12-06 23:33:10,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:33:10,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 892 transitions. [2021-12-06 23:33:10,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 81.0909090909091) internal successors, (892), 11 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:10,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:10,896 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:10,896 INFO L186 Difference]: Start difference. First operand has 97 places, 104 transitions, 324 flow. Second operand 11 states and 892 transitions. [2021-12-06 23:33:10,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 120 transitions, 422 flow [2021-12-06 23:33:10,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 120 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 23:33:10,900 INFO L242 Difference]: Finished difference. Result has 109 places, 113 transitions, 397 flow [2021-12-06 23:33:10,900 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=397, PETRI_PLACES=109, PETRI_TRANSITIONS=113} [2021-12-06 23:33:10,901 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 18 predicate places. [2021-12-06 23:33:10,901 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 113 transitions, 397 flow [2021-12-06 23:33:10,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.5) internal successors, (805), 10 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:10,902 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:33:10,902 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:10,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 23:33:11,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 23:33:11,104 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2021-12-06 23:33:11,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:11,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1046378170, now seen corresponding path program 2 times [2021-12-06 23:33:11,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:11,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074837274] [2021-12-06 23:33:11,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:11,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 23:33:11,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:11,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074837274] [2021-12-06 23:33:11,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074837274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:11,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:33:11,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:33:11,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409040072] [2021-12-06 23:33:11,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:11,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:33:11,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:11,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:33:11,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:33:11,274 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 92 [2021-12-06 23:33:11,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 113 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:33:11,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 92 [2021-12-06 23:33:11,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:33:11,389 INFO L129 PetriNetUnfolder]: 75/753 cut-off events. [2021-12-06 23:33:11,389 INFO L130 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2021-12-06 23:33:11,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 753 events. 75/753 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4832 event pairs, 11 based on Foata normal form. 2/717 useless extension candidates. Maximal degree in co-relation 499. Up to 74 conditions per place. [2021-12-06 23:33:11,393 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 13 selfloop transitions, 14 changer transitions 5/135 dead transitions. [2021-12-06 23:33:11,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 135 transitions, 509 flow [2021-12-06 23:33:11,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:33:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-06 23:33:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 601 transitions. [2021-12-06 23:33:11,396 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9332298136645962 [2021-12-06 23:33:11,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 601 transitions. [2021-12-06 23:33:11,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 601 transitions. [2021-12-06 23:33:11,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:33:11,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 601 transitions. [2021-12-06 23:33:11,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,401 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,401 INFO L186 Difference]: Start difference. First operand has 109 places, 113 transitions, 397 flow. Second operand 7 states and 601 transitions. [2021-12-06 23:33:11,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 135 transitions, 509 flow [2021-12-06 23:33:11,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 135 transitions, 497 flow, removed 5 selfloop flow, removed 1 redundant places. [2021-12-06 23:33:11,407 INFO L242 Difference]: Finished difference. Result has 116 places, 122 transitions, 448 flow [2021-12-06 23:33:11,407 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=448, PETRI_PLACES=116, PETRI_TRANSITIONS=122} [2021-12-06 23:33:11,408 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 25 predicate places. [2021-12-06 23:33:11,408 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 122 transitions, 448 flow [2021-12-06 23:33:11,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,408 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:33:11,408 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:11,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:33:11,409 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2021-12-06 23:33:11,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash -586814751, now seen corresponding path program 1 times [2021-12-06 23:33:11,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:11,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319153735] [2021-12-06 23:33:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:11,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 23:33:11,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:11,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319153735] [2021-12-06 23:33:11,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319153735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:11,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:33:11,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:33:11,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187222947] [2021-12-06 23:33:11,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:11,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:33:11,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:11,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:33:11,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:33:11,446 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 92 [2021-12-06 23:33:11,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 122 transitions, 448 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:33:11,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 92 [2021-12-06 23:33:11,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:33:11,505 INFO L129 PetriNetUnfolder]: 66/621 cut-off events. [2021-12-06 23:33:11,505 INFO L130 PetriNetUnfolder]: For 198/199 co-relation queries the response was YES. [2021-12-06 23:33:11,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 621 events. 66/621 cut-off events. For 198/199 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3656 event pairs, 8 based on Foata normal form. 1/602 useless extension candidates. Maximal degree in co-relation 431. Up to 66 conditions per place. [2021-12-06 23:33:11,508 INFO L132 encePairwiseOnDemand]: 90/92 looper letters, 4 selfloop transitions, 1 changer transitions 9/121 dead transitions. [2021-12-06 23:33:11,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 121 transitions, 456 flow [2021-12-06 23:33:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:33:11,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:33:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2021-12-06 23:33:11,509 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9347826086956522 [2021-12-06 23:33:11,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2021-12-06 23:33:11,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2021-12-06 23:33:11,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:33:11,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2021-12-06 23:33:11,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,511 INFO L186 Difference]: Start difference. First operand has 116 places, 122 transitions, 448 flow. Second operand 3 states and 258 transitions. [2021-12-06 23:33:11,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 121 transitions, 456 flow [2021-12-06 23:33:11,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 121 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 23:33:11,514 INFO L242 Difference]: Finished difference. Result has 117 places, 112 transitions, 398 flow [2021-12-06 23:33:11,515 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=117, PETRI_TRANSITIONS=112} [2021-12-06 23:33:11,515 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 26 predicate places. [2021-12-06 23:33:11,515 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 112 transitions, 398 flow [2021-12-06 23:33:11,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,515 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:33:11,516 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:11,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 23:33:11,516 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2021-12-06 23:33:11,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:11,516 INFO L85 PathProgramCache]: Analyzing trace with hash 711283475, now seen corresponding path program 1 times [2021-12-06 23:33:11,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:11,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503923149] [2021-12-06 23:33:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:11,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:33:11,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:11,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503923149] [2021-12-06 23:33:11,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503923149] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:33:11,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100902524] [2021-12-06 23:33:11,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:11,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:11,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:33:11,563 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:33:11,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 23:33:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:11,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:33:11,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:33:11,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:33:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:33:11,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100902524] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:33:11,814 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:33:11,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2021-12-06 23:33:11,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459326151] [2021-12-06 23:33:11,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:33:11,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:33:11,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:33:11,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:33:11,817 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 92 [2021-12-06 23:33:11,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 398 flow. Second operand has 14 states, 14 states have (on average 81.42857142857143) internal successors, (1140), 14 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:33:11,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 92 [2021-12-06 23:33:11,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:33:11,964 INFO L129 PetriNetUnfolder]: 45/592 cut-off events. [2021-12-06 23:33:11,964 INFO L130 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2021-12-06 23:33:11,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 592 events. 45/592 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3048 event pairs, 6 based on Foata normal form. 10/590 useless extension candidates. Maximal degree in co-relation 1005. Up to 53 conditions per place. [2021-12-06 23:33:11,966 INFO L132 encePairwiseOnDemand]: 85/92 looper letters, 33 selfloop transitions, 20 changer transitions 0/142 dead transitions. [2021-12-06 23:33:11,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 142 transitions, 612 flow [2021-12-06 23:33:11,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 23:33:11,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-06 23:33:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1380 transitions. [2021-12-06 23:33:11,970 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8823529411764706 [2021-12-06 23:33:11,970 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1380 transitions. [2021-12-06 23:33:11,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1380 transitions. [2021-12-06 23:33:11,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:33:11,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1380 transitions. [2021-12-06 23:33:11,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 81.17647058823529) internal successors, (1380), 17 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,978 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,978 INFO L186 Difference]: Start difference. First operand has 117 places, 112 transitions, 398 flow. Second operand 17 states and 1380 transitions. [2021-12-06 23:33:11,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 142 transitions, 612 flow [2021-12-06 23:33:11,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 142 transitions, 609 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-12-06 23:33:11,982 INFO L242 Difference]: Finished difference. Result has 135 places, 124 transitions, 528 flow [2021-12-06 23:33:11,982 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=528, PETRI_PLACES=135, PETRI_TRANSITIONS=124} [2021-12-06 23:33:11,982 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 44 predicate places. [2021-12-06 23:33:11,983 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 124 transitions, 528 flow [2021-12-06 23:33:11,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 81.42857142857143) internal successors, (1140), 14 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:11,983 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:33:11,983 INFO L254 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:12,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 23:33:12,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 23:33:12,185 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2021-12-06 23:33:12,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:12,186 INFO L85 PathProgramCache]: Analyzing trace with hash -510317036, now seen corresponding path program 1 times [2021-12-06 23:33:12,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:12,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068196736] [2021-12-06 23:33:12,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:12,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 88 proven. 20 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 23:33:12,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:12,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068196736] [2021-12-06 23:33:12,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068196736] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:33:12,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558048990] [2021-12-06 23:33:12,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:12,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:12,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:33:12,355 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:33:12,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 23:33:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:12,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:33:12,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 88 proven. 20 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 23:33:12,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:33:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 88 proven. 20 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 23:33:12,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558048990] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:33:12,618 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:33:12,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2021-12-06 23:33:12,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464970814] [2021-12-06 23:33:12,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:33:12,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 23:33:12,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:12,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 23:33:12,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:33:12,621 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 92 [2021-12-06 23:33:12,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 124 transitions, 528 flow. Second operand has 15 states, 15 states have (on average 81.06666666666666) internal successors, (1216), 15 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:12,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:33:12,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 92 [2021-12-06 23:33:12,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:33:12,818 INFO L129 PetriNetUnfolder]: 52/629 cut-off events. [2021-12-06 23:33:12,818 INFO L130 PetriNetUnfolder]: For 378/378 co-relation queries the response was YES. [2021-12-06 23:33:12,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 629 events. 52/629 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2657 event pairs, 6 based on Foata normal form. 6/623 useless extension candidates. Maximal degree in co-relation 637. Up to 53 conditions per place. [2021-12-06 23:33:12,820 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 28 selfloop transitions, 45 changer transitions 0/162 dead transitions. [2021-12-06 23:33:12,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 162 transitions, 887 flow [2021-12-06 23:33:12,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 23:33:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 23:33:12,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1699 transitions. [2021-12-06 23:33:12,824 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.879399585921325 [2021-12-06 23:33:12,824 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1699 transitions. [2021-12-06 23:33:12,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1699 transitions. [2021-12-06 23:33:12,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:33:12,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1699 transitions. [2021-12-06 23:33:12,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 80.9047619047619) internal successors, (1699), 21 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:12,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:12,833 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:12,833 INFO L186 Difference]: Start difference. First operand has 135 places, 124 transitions, 528 flow. Second operand 21 states and 1699 transitions. [2021-12-06 23:33:12,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 162 transitions, 887 flow [2021-12-06 23:33:12,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 162 transitions, 869 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-12-06 23:33:12,838 INFO L242 Difference]: Finished difference. Result has 154 places, 145 transitions, 800 flow [2021-12-06 23:33:12,838 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=800, PETRI_PLACES=154, PETRI_TRANSITIONS=145} [2021-12-06 23:33:12,839 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 63 predicate places. [2021-12-06 23:33:12,839 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 145 transitions, 800 flow [2021-12-06 23:33:12,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 81.06666666666666) internal successors, (1216), 15 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:12,839 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:33:12,840 INFO L254 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2021-12-06 23:33:12,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 23:33:13,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 23:33:13,041 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2021-12-06 23:33:13,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:13,042 INFO L85 PathProgramCache]: Analyzing trace with hash 884802629, now seen corresponding path program 2 times [2021-12-06 23:33:13,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:13,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185522538] [2021-12-06 23:33:13,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:13,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 135 proven. 135 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:33:13,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:33:13,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185522538] [2021-12-06 23:33:13,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185522538] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:33:13,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818466921] [2021-12-06 23:33:13,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:33:13,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:33:13,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:33:13,242 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:33:13,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 23:33:13,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:33:13,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:33:13,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 23:33:13,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 135 proven. 135 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:33:13,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:33:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 135 proven. 135 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:33:13,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818466921] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:33:13,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:33:13,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 17 [2021-12-06 23:33:13,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701148425] [2021-12-06 23:33:13,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:33:13,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 23:33:13,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:33:13,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 23:33:13,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:33:13,586 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 92 [2021-12-06 23:33:13,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 145 transitions, 800 flow. Second operand has 17 states, 17 states have (on average 81.41176470588235) internal successors, (1384), 17 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:13,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:33:13,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 92 [2021-12-06 23:33:13,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:33:13,770 INFO L129 PetriNetUnfolder]: 30/380 cut-off events. [2021-12-06 23:33:13,770 INFO L130 PetriNetUnfolder]: For 335/335 co-relation queries the response was YES. [2021-12-06 23:33:13,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 380 events. 30/380 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1191 event pairs, 3 based on Foata normal form. 1/375 useless extension candidates. Maximal degree in co-relation 576. Up to 31 conditions per place. [2021-12-06 23:33:13,772 INFO L132 encePairwiseOnDemand]: 85/92 looper letters, 50 selfloop transitions, 34 changer transitions 0/168 dead transitions. [2021-12-06 23:33:13,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 168 transitions, 1097 flow [2021-12-06 23:33:13,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 23:33:13,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 23:33:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1697 transitions. [2021-12-06 23:33:13,777 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8783643892339544 [2021-12-06 23:33:13,777 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1697 transitions. [2021-12-06 23:33:13,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1697 transitions. [2021-12-06 23:33:13,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:33:13,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1697 transitions. [2021-12-06 23:33:13,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 80.80952380952381) internal successors, (1697), 21 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:13,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:13,787 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:13,787 INFO L186 Difference]: Start difference. First operand has 154 places, 145 transitions, 800 flow. Second operand 21 states and 1697 transitions. [2021-12-06 23:33:13,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 168 transitions, 1097 flow [2021-12-06 23:33:13,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 168 transitions, 999 flow, removed 31 selfloop flow, removed 7 redundant places. [2021-12-06 23:33:13,793 INFO L242 Difference]: Finished difference. Result has 170 places, 146 transitions, 844 flow [2021-12-06 23:33:13,793 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=844, PETRI_PLACES=170, PETRI_TRANSITIONS=146} [2021-12-06 23:33:13,794 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 79 predicate places. [2021-12-06 23:33:13,794 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 146 transitions, 844 flow [2021-12-06 23:33:13,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 81.41176470588235) internal successors, (1384), 17 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:33:13,795 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:33:13,795 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:13,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 23:33:13,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 23:33:13,996 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2021-12-06 23:33:13,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:13,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1316989844, now seen corresponding path program 1 times [2021-12-06 23:33:13,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:33:13,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914277425] [2021-12-06 23:33:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:13,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:33:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:33:14,129 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:33:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:33:14,201 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:33:14,202 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:33:14,202 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 12 remaining) [2021-12-06 23:33:14,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2021-12-06 23:33:14,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2021-12-06 23:33:14,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fErr2ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2021-12-06 23:33:14,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2021-12-06 23:33:14,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2021-12-06 23:33:14,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2021-12-06 23:33:14,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2021-12-06 23:33:14,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 12 remaining) [2021-12-06 23:33:14,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fErr0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2021-12-06 23:33:14,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2021-12-06 23:33:14,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fErr2ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2021-12-06 23:33:14,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 23:33:14,208 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:14,212 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-06 23:33:14,212 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:33:14,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:33:14 BasicIcfg [2021-12-06 23:33:14,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:33:14,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:33:14,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:33:14,282 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:33:14,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:33:07" (3/4) ... [2021-12-06 23:33:14,284 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 23:33:14,284 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:33:14,285 INFO L158 Benchmark]: Toolchain (without parser) took 7809.92ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 81.3MB in the beginning and 77.5MB in the end (delta: 3.8MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2021-12-06 23:33:14,285 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 125.8MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:33:14,285 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.31ms. Allocated memory is still 125.8MB. Free memory was 81.1MB in the beginning and 55.1MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-06 23:33:14,286 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.89ms. Allocated memory is still 125.8MB. Free memory was 54.8MB in the beginning and 52.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:33:14,286 INFO L158 Benchmark]: Boogie Preprocessor took 19.57ms. Allocated memory is still 125.8MB. Free memory was 52.7MB in the beginning and 51.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:33:14,286 INFO L158 Benchmark]: RCFGBuilder took 273.91ms. Allocated memory is still 125.8MB. Free memory was 51.4MB in the beginning and 92.5MB in the end (delta: -41.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 23:33:14,286 INFO L158 Benchmark]: TraceAbstraction took 7106.39ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 92.2MB in the beginning and 78.6MB in the end (delta: 13.6MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2021-12-06 23:33:14,286 INFO L158 Benchmark]: Witness Printer took 2.28ms. Allocated memory is still 167.8MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:33:14,288 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 125.8MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 370.31ms. Allocated memory is still 125.8MB. Free memory was 81.1MB in the beginning and 55.1MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.89ms. Allocated memory is still 125.8MB. Free memory was 54.8MB in the beginning and 52.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.57ms. Allocated memory is still 125.8MB. Free memory was 52.7MB in the beginning and 51.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 273.91ms. Allocated memory is still 125.8MB. Free memory was 51.4MB in the beginning and 92.5MB in the end (delta: -41.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 7106.39ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 92.2MB in the beginning and 78.6MB in the end (delta: 13.6MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. * Witness Printer took 2.28ms. Allocated memory is still 167.8MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - DataRaceFoundResult [Line: 1009]: Data race detected Data race detected The following path leads to a data race: [L987] 0 int glob; VAL [glob=0] [L988] 0 pthread_mutex_t *p, *q; VAL [glob=0, p={0:0}, q={0:0}] [L996] 0 pthread_t t1, t2; VAL [glob=0, p={0:0}, q={0:0}, t1={2:0}] [L997] 0 int i; VAL [glob=0, p={0:0}, q={0:0}, t1={2:0}] [L998] 0 pthread_mutex_t *a; VAL [glob=0, p={0:0}, q={0:0}, t1={2:0}] [L999] 0 i=0 VAL [glob=0, i=0, p={0:0}, q={0:0}, t1={2:0}] [L999] COND TRUE 0 i < 10 VAL [glob=0, i=0, p={0:0}, q={0:0}, t1={2:0}] [L1000] 0 a = malloc(sizeof(pthread_mutex_t)) VAL [a={-2:0}, glob=0, i=0, malloc(sizeof(pthread_mutex_t))={-2:0}, p={0:0}, q={0:0}, t1={2:0}] [L1002] COND FALSE 0 !(i==3) VAL [a={-2:0}, glob=0, i=0, p={0:0}, q={0:0}, t1={2:0}] [L1004] COND FALSE 0 !(i==7) VAL [a={-2:0}, glob=0, i=0, p={0:0}, q={0:0}, t1={2:0}] [L999] 0 i++ VAL [a={-2:0}, glob=0, i=1, p={0:0}, q={0:0}, t1={2:0}] [L999] COND TRUE 0 i < 10 VAL [a={-2:0}, glob=0, i=1, p={0:0}, q={0:0}, t1={2:0}] [L1000] 0 a = malloc(sizeof(pthread_mutex_t)) VAL [a={-3:0}, glob=0, i=1, malloc(sizeof(pthread_mutex_t))={-3:0}, p={0:0}, q={0:0}, t1={2:0}] [L1002] COND FALSE 0 !(i==3) VAL [a={-3:0}, glob=0, i=1, p={0:0}, q={0:0}, t1={2:0}] [L1004] COND FALSE 0 !(i==7) VAL [a={-3:0}, glob=0, i=1, p={0:0}, q={0:0}, t1={2:0}] [L999] 0 i++ VAL [a={-3:0}, glob=0, i=2, p={0:0}, q={0:0}, t1={2:0}] [L999] COND TRUE 0 i < 10 VAL [a={-3:0}, glob=0, i=2, p={0:0}, q={0:0}, t1={2:0}] [L1000] 0 a = malloc(sizeof(pthread_mutex_t)) VAL [a={-4:0}, glob=0, i=2, malloc(sizeof(pthread_mutex_t))={-4:0}, p={0:0}, q={0:0}, t1={2:0}] [L1002] COND FALSE 0 !(i==3) VAL [a={-4:0}, glob=0, i=2, p={0:0}, q={0:0}, t1={2:0}] [L1004] COND FALSE 0 !(i==7) VAL [a={-4:0}, glob=0, i=2, p={0:0}, q={0:0}, t1={2:0}] [L999] 0 i++ VAL [a={-4:0}, glob=0, i=3, p={0:0}, q={0:0}, t1={2:0}] [L999] COND TRUE 0 i < 10 VAL [a={-4:0}, glob=0, i=3, p={0:0}, q={0:0}, t1={2:0}] [L1000] 0 a = malloc(sizeof(pthread_mutex_t)) VAL [a={-5:0}, glob=0, i=3, malloc(sizeof(pthread_mutex_t))={-5:0}, p={0:0}, q={0:0}, t1={2:0}] [L1002] COND TRUE 0 i==3 VAL [a={-5:0}, glob=0, i=3, p={0:0}, q={0:0}, t1={2:0}] [L1003] 0 p = a VAL [a={-5:0}, glob=0, i=3, p={-5:0}, q={0:0}, t1={2:0}] [L1004] COND FALSE 0 !(i==7) VAL [a={-5:0}, glob=0, i=3, p={-5:0}, q={0:0}, t1={2:0}] [L999] 0 i++ VAL [a={-5:0}, glob=0, i=4, p={-5:0}, q={0:0}, t1={2:0}] [L999] COND TRUE 0 i < 10 VAL [a={-5:0}, glob=0, i=4, p={-5:0}, q={0:0}, t1={2:0}] [L1000] 0 a = malloc(sizeof(pthread_mutex_t)) VAL [a={-6:0}, glob=0, i=4, malloc(sizeof(pthread_mutex_t))={-6:0}, p={-5:0}, q={0:0}, t1={2:0}] [L1002] COND FALSE 0 !(i==3) VAL [a={-6:0}, glob=0, i=4, p={-5:0}, q={0:0}, t1={2:0}] [L1004] COND FALSE 0 !(i==7) VAL [a={-6:0}, glob=0, i=4, p={-5:0}, q={0:0}, t1={2:0}] [L999] 0 i++ VAL [a={-6:0}, glob=0, i=5, p={-5:0}, q={0:0}, t1={2:0}] [L999] COND TRUE 0 i < 10 VAL [a={-6:0}, glob=0, i=5, p={-5:0}, q={0:0}, t1={2:0}] [L1000] 0 a = malloc(sizeof(pthread_mutex_t)) VAL [a={-7:0}, glob=0, i=5, malloc(sizeof(pthread_mutex_t))={-7:0}, p={-5:0}, q={0:0}, t1={2:0}] [L1002] COND FALSE 0 !(i==3) VAL [a={-7:0}, glob=0, i=5, p={-5:0}, q={0:0}, t1={2:0}] [L1004] COND FALSE 0 !(i==7) VAL [a={-7:0}, glob=0, i=5, p={-5:0}, q={0:0}, t1={2:0}] [L999] 0 i++ VAL [a={-7:0}, glob=0, i=6, p={-5:0}, q={0:0}, t1={2:0}] [L999] COND TRUE 0 i < 10 VAL [a={-7:0}, glob=0, i=6, p={-5:0}, q={0:0}, t1={2:0}] [L1000] 0 a = malloc(sizeof(pthread_mutex_t)) VAL [a={-8:0}, glob=0, i=6, malloc(sizeof(pthread_mutex_t))={-8:0}, p={-5:0}, q={0:0}, t1={2:0}] [L1002] COND FALSE 0 !(i==3) VAL [a={-8:0}, glob=0, i=6, p={-5:0}, q={0:0}, t1={2:0}] [L1004] COND FALSE 0 !(i==7) VAL [a={-8:0}, glob=0, i=6, p={-5:0}, q={0:0}, t1={2:0}] [L999] 0 i++ VAL [a={-8:0}, glob=0, i=7, p={-5:0}, q={0:0}, t1={2:0}] [L999] COND TRUE 0 i < 10 VAL [a={-8:0}, glob=0, i=7, p={-5:0}, q={0:0}, t1={2:0}] [L1000] 0 a = malloc(sizeof(pthread_mutex_t)) VAL [a={-9:0}, glob=0, i=7, malloc(sizeof(pthread_mutex_t))={-9:0}, p={-5:0}, q={0:0}, t1={2:0}] [L1002] COND FALSE 0 !(i==3) VAL [a={-9:0}, glob=0, i=7, p={-5:0}, q={0:0}, t1={2:0}] [L1004] COND TRUE 0 i==7 VAL [a={-9:0}, glob=0, i=7, p={-5:0}, q={0:0}, t1={2:0}] [L1005] 0 q = a VAL [a={-9:0}, glob=0, i=7, p={-5:0}, q={-9:0}, t1={2:0}] [L999] 0 i++ VAL [a={-9:0}, glob=0, i=8, p={-5:0}, q={-9:0}, t1={2:0}] [L999] COND TRUE 0 i < 10 VAL [a={-9:0}, glob=0, i=8, p={-5:0}, q={-9:0}, t1={2:0}] [L1000] 0 a = malloc(sizeof(pthread_mutex_t)) VAL [a={-10:0}, glob=0, i=8, malloc(sizeof(pthread_mutex_t))={-10:0}, p={-5:0}, q={-9:0}, t1={2:0}] [L1002] COND FALSE 0 !(i==3) VAL [a={-10:0}, glob=0, i=8, p={-5:0}, q={-9:0}, t1={2:0}] [L1004] COND FALSE 0 !(i==7) VAL [a={-10:0}, glob=0, i=8, p={-5:0}, q={-9:0}, t1={2:0}] [L999] 0 i++ VAL [a={-10:0}, glob=0, i=9, p={-5:0}, q={-9:0}, t1={2:0}] [L999] COND TRUE 0 i < 10 VAL [a={-10:0}, glob=0, i=9, p={-5:0}, q={-9:0}, t1={2:0}] [L1000] 0 a = malloc(sizeof(pthread_mutex_t)) VAL [a={-11:0}, glob=0, i=9, malloc(sizeof(pthread_mutex_t))={-11:0}, p={-5:0}, q={-9:0}, t1={2:0}] [L1002] COND FALSE 0 !(i==3) VAL [a={-11:0}, glob=0, i=9, p={-5:0}, q={-9:0}, t1={2:0}] [L1004] COND FALSE 0 !(i==7) VAL [a={-11:0}, glob=0, i=9, p={-5:0}, q={-9:0}, t1={2:0}] [L999] 0 i++ VAL [a={-11:0}, glob=0, i=10, p={-5:0}, q={-9:0}, t1={2:0}] [L999] COND FALSE 0 !(i < 10) VAL [a={-11:0}, glob=0, i=10, p={-5:0}, q={-9:0}, t1={2:0}] [L1007] FCALL, FORK 0 pthread_create(&t1, 0, f, 0) VAL [a={-11:0}, glob=0, i=10, p={-5:0}, pthread_create(&t1, 0, f, 0)=-1, q={-9:0}, t1={2:0}, x={0:0}] [L991] 1 glob++ VAL [glob=0, p={-5:0}, q={-9:0}, x={0:0}, x={0:0}] [L1009] 0 glob++ VAL [a={-11:0}, glob=0, i=10, p={-5:0}, q={-9:0}, t1={2:0}, x={0:0}, x={0:0}] [L991] 1 glob++ VAL [glob=1, glob++=27, glob++=0, p={-5:0}, q={-9:0}, x={0:0}, x={0:0}] [L1009] 0 glob++ VAL [a={-11:0}, glob=1, glob++=27, glob++=0, i=10, p={-5:0}, q={-9:0}, t1={2:0}, x={0:0}, x={0:0}] Now there is a data race on ~glob~0 between C: glob++ [991] and C: glob++ [1009] - UnprovableResult [Line: 991]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 991]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 992]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1010]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 111 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.0s, OverallIterations: 14, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 162 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 162 mSDsluCounter, 166 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 103 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 472 IncrementalHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 94 mSDtfsCounter, 472 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1036 GetRequests, 916 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=844occurred in iteration=13, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1476 NumberOfCodeBlocks, 1476 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1652 ConstructedInterpolants, 0 QuantifiedInterpolants, 2888 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1616 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 27 InterpolantComputations, 9 PerfectInterpolantSequences, 1070/1627 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 23:33:14,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb0b45a4-99d5-4793-9873-e360eb2badac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE