./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/floating_read-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/floating_read-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc --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 8144e99ab74da6c65d7c38142aa4ddc1b99b688ea06937a7acd153b5a75ad731 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:40:39,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:40:39,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:40:39,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:40:39,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:40:39,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:40:39,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:40:39,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:40:39,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:40:39,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:40:39,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:40:39,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:40:39,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:40:39,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:40:39,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:40:39,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:40:39,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:40:39,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:40:39,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:40:39,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:40:39,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:40:39,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:40:39,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:40:39,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:40:39,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:40:39,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:40:39,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:40:39,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:40:39,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:40:39,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:40:39,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:40:39,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:40:39,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:40:39,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:40:39,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:40:39,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:40:39,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:40:39,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:40:39,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:40:39,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:40:39,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:40:39,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:40:39,705 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:40:39,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:40:39,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:40:39,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:40:39,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:40:39,708 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:40:39,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:40:39,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:40:39,710 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:40:39,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:40:39,712 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:40:39,712 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:40:39,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:40:39,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:40:39,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:40:39,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:40:39,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:40:39,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:40:39,714 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:40:39,714 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:40:39,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:40:39,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:40:39,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:40:39,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:40:39,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:40:39,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:40:39,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:40:39,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:40:39,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:40:39,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:40:39,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:40:39,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:40:39,718 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:40:39,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:40:39,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:40:39,719 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_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8144e99ab74da6c65d7c38142aa4ddc1b99b688ea06937a7acd153b5a75ad731 [2022-11-02 20:40:40,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:40:40,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:40:40,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:40:40,133 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:40:40,134 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:40:40,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-deagle/floating_read-10.i [2022-11-02 20:40:40,230 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/data/b0c06cb88/3fa6dda7e5a44b99931ea3b1ee5e7977/FLAGc1e465872 [2022-11-02 20:40:40,895 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:40:40,896 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/sv-benchmarks/c/pthread-deagle/floating_read-10.i [2022-11-02 20:40:40,910 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/data/b0c06cb88/3fa6dda7e5a44b99931ea3b1ee5e7977/FLAGc1e465872 [2022-11-02 20:40:41,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/data/b0c06cb88/3fa6dda7e5a44b99931ea3b1ee5e7977 [2022-11-02 20:40:41,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:40:41,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:40:41,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:40:41,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:40:41,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:40:41,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:40:41" (1/1) ... [2022-11-02 20:40:41,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f9a061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:41, skipping insertion in model container [2022-11-02 20:40:41,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:40:41" (1/1) ... [2022-11-02 20:40:41,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:40:41,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:40:41,781 WARN L1543 CHandler]: Possible shadowing of function thread [2022-11-02 20:40:41,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/sv-benchmarks/c/pthread-deagle/floating_read-10.i[31197,31210] [2022-11-02 20:40:41,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:40:41,823 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:40:41,892 WARN L1543 CHandler]: Possible shadowing of function thread [2022-11-02 20:40:41,898 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/sv-benchmarks/c/pthread-deagle/floating_read-10.i[31197,31210] [2022-11-02 20:40:41,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:40:41,951 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:40:41,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:41 WrapperNode [2022-11-02 20:40:41,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:40:41,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:40:41,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:40:41,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:40:41,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:41" (1/1) ... [2022-11-02 20:40:42,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:41" (1/1) ... [2022-11-02 20:40:42,038 INFO L138 Inliner]: procedures = 162, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-11-02 20:40:42,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:40:42,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:40:42,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:40:42,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:40:42,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:41" (1/1) ... [2022-11-02 20:40:42,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:41" (1/1) ... [2022-11-02 20:40:42,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:41" (1/1) ... [2022-11-02 20:40:42,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:41" (1/1) ... [2022-11-02 20:40:42,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:41" (1/1) ... [2022-11-02 20:40:42,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:41" (1/1) ... [2022-11-02 20:40:42,070 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:41" (1/1) ... [2022-11-02 20:40:42,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:41" (1/1) ... [2022-11-02 20:40:42,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:40:42,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:40:42,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:40:42,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:40:42,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:41" (1/1) ... [2022-11-02 20:40:42,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:40:42,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:42,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:40:42,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:40:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:40:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:40:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:40:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:40:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:40:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:40:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:40:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-11-02 20:40:42,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-11-02 20:40:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:40:42,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:40:42,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:40:42,185 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:40:42,437 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:40:42,439 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:40:42,707 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:40:42,762 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:40:42,762 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:40:42,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:40:42 BoogieIcfgContainer [2022-11-02 20:40:42,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:40:42,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:40:42,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:40:42,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:40:42,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:40:41" (1/3) ... [2022-11-02 20:40:42,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad963ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:40:42, skipping insertion in model container [2022-11-02 20:40:42,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:41" (2/3) ... [2022-11-02 20:40:42,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad963ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:40:42, skipping insertion in model container [2022-11-02 20:40:42,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:40:42" (3/3) ... [2022-11-02 20:40:42,779 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-10.i [2022-11-02 20:40:42,792 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:40:42,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:40:42,807 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-02 20:40:42,807 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:40:42,889 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:40:42,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 69 transitions, 146 flow [2022-11-02 20:40:43,029 INFO L130 PetriNetUnfolder]: 7/99 cut-off events. [2022-11-02 20:40:43,031 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:40:43,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 99 events. 7/99 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 156 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2022-11-02 20:40:43,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 69 transitions, 146 flow [2022-11-02 20:40:43,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 69 transitions, 146 flow [2022-11-02 20:40:43,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:40:43,071 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@88a72cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:40:43,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-02 20:40:43,080 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2022-11-02 20:40:43,080 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:40:43,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:43,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:43,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-02 20:40:43,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:43,090 INFO L85 PathProgramCache]: Analyzing trace with hash 198072736, now seen corresponding path program 1 times [2022-11-02 20:40:43,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:43,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297012134] [2022-11-02 20:40:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:43,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:43,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:43,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297012134] [2022-11-02 20:40:43,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297012134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:43,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:43,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:40:43,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26172953] [2022-11-02 20:40:43,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:43,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:40:43,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:43,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:40:43,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:40:43,511 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2022-11-02 20:40:43,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:43,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:43,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2022-11-02 20:40:43,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:43,604 INFO L130 PetriNetUnfolder]: 1/89 cut-off events. [2022-11-02 20:40:43,605 INFO L131 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2022-11-02 20:40:43,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 89 events. 1/89 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 140 event pairs, 0 based on Foata normal form. 6/85 useless extension candidates. Maximal degree in co-relation 4. Up to 5 conditions per place. [2022-11-02 20:40:43,608 INFO L137 encePairwiseOnDemand]: 64/69 looper letters, 4 selfloop transitions, 0 changer transitions 8/63 dead transitions. [2022-11-02 20:40:43,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 142 flow [2022-11-02 20:40:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:40:43,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:40:43,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 127 transitions. [2022-11-02 20:40:43,627 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9202898550724637 [2022-11-02 20:40:43,628 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 127 transitions. [2022-11-02 20:40:43,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 127 transitions. [2022-11-02 20:40:43,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:43,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 127 transitions. [2022-11-02 20:40:43,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:43,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:43,656 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:43,659 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 146 flow. Second operand 2 states and 127 transitions. [2022-11-02 20:40:43,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 142 flow [2022-11-02 20:40:43,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:43,675 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 118 flow [2022-11-02 20:40:43,679 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2022-11-02 20:40:43,686 INFO L287 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2022-11-02 20:40:43,687 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 118 flow [2022-11-02 20:40:43,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:43,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:43,688 INFO L208 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] [2022-11-02 20:40:43,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:40:43,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-02 20:40:43,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1680329326, now seen corresponding path program 1 times [2022-11-02 20:40:43,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:43,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705972744] [2022-11-02 20:40:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:43,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:43,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:43,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705972744] [2022-11-02 20:40:43,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705972744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:43,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:43,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:40:43,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085627659] [2022-11-02 20:40:43,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:43,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:43,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:43,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:43,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:40:43,880 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 69 [2022-11-02 20:40:43,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:43,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:43,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 69 [2022-11-02 20:40:43,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:43,968 INFO L130 PetriNetUnfolder]: 5/94 cut-off events. [2022-11-02 20:40:43,968 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:40:43,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 94 events. 5/94 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 128 event pairs, 1 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 122. Up to 16 conditions per place. [2022-11-02 20:40:43,970 INFO L137 encePairwiseOnDemand]: 66/69 looper letters, 12 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2022-11-02 20:40:43,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 152 flow [2022-11-02 20:40:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:43,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:40:43,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2022-11-02 20:40:43,979 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8260869565217391 [2022-11-02 20:40:43,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 171 transitions. [2022-11-02 20:40:43,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 171 transitions. [2022-11-02 20:40:43,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:43,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 171 transitions. [2022-11-02 20:40:43,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:43,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:43,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:43,983 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 118 flow. Second operand 3 states and 171 transitions. [2022-11-02 20:40:43,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 152 flow [2022-11-02 20:40:43,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:43,986 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 126 flow [2022-11-02 20:40:43,987 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2022-11-02 20:40:43,988 INFO L287 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2022-11-02 20:40:43,988 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 126 flow [2022-11-02 20:40:43,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:43,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:43,989 INFO L208 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] [2022-11-02 20:40:43,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:40:43,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-02 20:40:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:43,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1418593939, now seen corresponding path program 1 times [2022-11-02 20:40:43,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:43,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408677193] [2022-11-02 20:40:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:43,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:44,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:44,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408677193] [2022-11-02 20:40:44,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408677193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:44,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650673626] [2022-11-02 20:40:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:44,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:44,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:44,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:44,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:40:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:44,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:40:44,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:40:44,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:44,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650673626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:44,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:40:44,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-02 20:40:44,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910967081] [2022-11-02 20:40:44,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:44,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:44,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:44,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:44,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:40:44,384 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2022-11-02 20:40:44,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:44,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:44,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2022-11-02 20:40:44,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:44,466 INFO L130 PetriNetUnfolder]: 1/99 cut-off events. [2022-11-02 20:40:44,469 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-02 20:40:44,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 99 events. 1/99 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 121. Up to 8 conditions per place. [2022-11-02 20:40:44,472 INFO L137 encePairwiseOnDemand]: 65/69 looper letters, 7 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2022-11-02 20:40:44,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 155 flow [2022-11-02 20:40:44,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:44,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:40:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2022-11-02 20:40:44,479 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2022-11-02 20:40:44,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 179 transitions. [2022-11-02 20:40:44,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 179 transitions. [2022-11-02 20:40:44,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:44,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 179 transitions. [2022-11-02 20:40:44,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:44,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:44,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:44,490 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 126 flow. Second operand 3 states and 179 transitions. [2022-11-02 20:40:44,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 155 flow [2022-11-02 20:40:44,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:40:44,493 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 144 flow [2022-11-02 20:40:44,495 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2022-11-02 20:40:44,496 INFO L287 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2022-11-02 20:40:44,497 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 144 flow [2022-11-02 20:40:44,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:44,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:44,498 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1] [2022-11-02 20:40:44,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:40:44,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:44,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-02 20:40:44,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:44,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1765606273, now seen corresponding path program 1 times [2022-11-02 20:40:44,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:44,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898177328] [2022-11-02 20:40:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:44,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:40:44,747 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:40:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:40:44,786 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:40:44,786 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:40:44,787 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-02 20:40:44,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2022-11-02 20:40:44,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2022-11-02 20:40:44,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2022-11-02 20:40:44,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2022-11-02 20:40:44,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2022-11-02 20:40:44,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:40:44,791 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-02 20:40:44,793 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:40:44,793 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:40:44,809 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:40:44,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 172 flow [2022-11-02 20:40:44,832 INFO L130 PetriNetUnfolder]: 13/168 cut-off events. [2022-11-02 20:40:44,833 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:40:44,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 168 events. 13/168 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 331 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 101. Up to 8 conditions per place. [2022-11-02 20:40:44,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 77 transitions, 172 flow [2022-11-02 20:40:44,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 172 flow [2022-11-02 20:40:44,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:40:44,837 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@88a72cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:40:44,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-02 20:40:44,839 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2022-11-02 20:40:44,840 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:40:44,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:44,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:44,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-02 20:40:44,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:44,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1280739507, now seen corresponding path program 1 times [2022-11-02 20:40:44,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:44,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678521910] [2022-11-02 20:40:44,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:44,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:44,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:44,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678521910] [2022-11-02 20:40:44,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678521910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:44,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:44,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:40:44,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881276031] [2022-11-02 20:40:44,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:44,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:40:44,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:44,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:40:44,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:40:44,863 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 77 [2022-11-02 20:40:44,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:44,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:44,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 77 [2022-11-02 20:40:44,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:44,901 INFO L130 PetriNetUnfolder]: 7/185 cut-off events. [2022-11-02 20:40:44,901 INFO L131 PetriNetUnfolder]: For 31/40 co-relation queries the response was YES. [2022-11-02 20:40:44,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 185 events. 7/185 cut-off events. For 31/40 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 468 event pairs, 4 based on Foata normal form. 12/175 useless extension candidates. Maximal degree in co-relation 95. Up to 18 conditions per place. [2022-11-02 20:40:44,902 INFO L137 encePairwiseOnDemand]: 71/77 looper letters, 7 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2022-11-02 20:40:44,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 172 flow [2022-11-02 20:40:44,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:40:44,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:40:44,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 139 transitions. [2022-11-02 20:40:44,904 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9025974025974026 [2022-11-02 20:40:44,904 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 139 transitions. [2022-11-02 20:40:44,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 139 transitions. [2022-11-02 20:40:44,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:44,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 139 transitions. [2022-11-02 20:40:44,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:44,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:44,906 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:44,907 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 172 flow. Second operand 2 states and 139 transitions. [2022-11-02 20:40:44,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 172 flow [2022-11-02 20:40:44,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:44,909 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 158 flow [2022-11-02 20:40:44,909 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=158, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2022-11-02 20:40:44,910 INFO L287 CegarLoopForPetriNet]: 77 programPoint places, -3 predicate places. [2022-11-02 20:40:44,910 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 158 flow [2022-11-02 20:40:44,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:44,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:44,911 INFO L208 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] [2022-11-02 20:40:44,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:40:44,912 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-02 20:40:44,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:44,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1222014171, now seen corresponding path program 1 times [2022-11-02 20:40:44,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:44,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819010407] [2022-11-02 20:40:44,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:44,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:44,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:44,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819010407] [2022-11-02 20:40:44,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819010407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:44,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:44,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:40:44,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590000629] [2022-11-02 20:40:44,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:44,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:44,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:44,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:44,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:40:44,950 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 77 [2022-11-02 20:40:44,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:44,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:44,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 77 [2022-11-02 20:40:44,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:45,056 INFO L130 PetriNetUnfolder]: 32/330 cut-off events. [2022-11-02 20:40:45,057 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-02 20:40:45,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 330 events. 32/330 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1449 event pairs, 12 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 428. Up to 69 conditions per place. [2022-11-02 20:40:45,061 INFO L137 encePairwiseOnDemand]: 74/77 looper letters, 17 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-11-02 20:40:45,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 206 flow [2022-11-02 20:40:45,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:40:45,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2022-11-02 20:40:45,064 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8138528138528138 [2022-11-02 20:40:45,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2022-11-02 20:40:45,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2022-11-02 20:40:45,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:45,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2022-11-02 20:40:45,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:45,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:45,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:45,069 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 158 flow. Second operand 3 states and 188 transitions. [2022-11-02 20:40:45,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 206 flow [2022-11-02 20:40:45,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 206 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:45,073 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 170 flow [2022-11-02 20:40:45,073 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2022-11-02 20:40:45,077 INFO L287 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2022-11-02 20:40:45,078 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 170 flow [2022-11-02 20:40:45,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:45,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:45,079 INFO L208 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] [2022-11-02 20:40:45,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:40:45,079 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-02 20:40:45,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:45,080 INFO L85 PathProgramCache]: Analyzing trace with hash 936904422, now seen corresponding path program 1 times [2022-11-02 20:40:45,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:45,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390947334] [2022-11-02 20:40:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:45,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:45,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:45,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:45,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390947334] [2022-11-02 20:40:45,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390947334] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:45,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566742448] [2022-11-02 20:40:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:45,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:45,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:45,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:45,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:40:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:45,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:40:45,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:40:45,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:45,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566742448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:45,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:40:45,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-02 20:40:45,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301296846] [2022-11-02 20:40:45,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:45,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:45,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:45,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:45,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:40:45,391 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 77 [2022-11-02 20:40:45,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:45,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:45,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 77 [2022-11-02 20:40:45,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:45,499 INFO L130 PetriNetUnfolder]: 23/385 cut-off events. [2022-11-02 20:40:45,500 INFO L131 PetriNetUnfolder]: For 54/64 co-relation queries the response was YES. [2022-11-02 20:40:45,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 385 events. 23/385 cut-off events. For 54/64 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1931 event pairs, 6 based on Foata normal form. 3/345 useless extension candidates. Maximal degree in co-relation 476. Up to 41 conditions per place. [2022-11-02 20:40:45,504 INFO L137 encePairwiseOnDemand]: 72/77 looper letters, 11 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2022-11-02 20:40:45,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 216 flow [2022-11-02 20:40:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:40:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2022-11-02 20:40:45,507 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8484848484848485 [2022-11-02 20:40:45,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2022-11-02 20:40:45,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2022-11-02 20:40:45,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:45,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2022-11-02 20:40:45,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:45,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:45,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:45,512 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 170 flow. Second operand 3 states and 196 transitions. [2022-11-02 20:40:45,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 216 flow [2022-11-02 20:40:45,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:40:45,519 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 198 flow [2022-11-02 20:40:45,519 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2022-11-02 20:40:45,521 INFO L287 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2022-11-02 20:40:45,521 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 198 flow [2022-11-02 20:40:45,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:45,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:45,527 INFO L208 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] [2022-11-02 20:40:45,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:45,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:45,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-02 20:40:45,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:45,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1671195300, now seen corresponding path program 1 times [2022-11-02 20:40:45,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:45,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479233356] [2022-11-02 20:40:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:45,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:45,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:45,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479233356] [2022-11-02 20:40:45,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479233356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:45,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923584799] [2022-11-02 20:40:45,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:45,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:45,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:45,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:45,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:40:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:46,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:40:46,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:46,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:46,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923584799] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:46,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:40:46,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:40:46,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592742139] [2022-11-02 20:40:46,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:46,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:40:46,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:46,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:40:46,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:40:46,145 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 77 [2022-11-02 20:40:46,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 198 flow. Second operand has 10 states, 10 states have (on average 57.5) internal successors, (575), 10 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:46,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:46,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 77 [2022-11-02 20:40:46,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:46,287 INFO L130 PetriNetUnfolder]: 27/121 cut-off events. [2022-11-02 20:40:46,287 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-11-02 20:40:46,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 121 events. 27/121 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 310 event pairs, 0 based on Foata normal form. 6/127 useless extension candidates. Maximal degree in co-relation 242. Up to 31 conditions per place. [2022-11-02 20:40:46,288 INFO L137 encePairwiseOnDemand]: 72/77 looper letters, 21 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2022-11-02 20:40:46,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 212 flow [2022-11-02 20:40:46,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:40:46,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 525 transitions. [2022-11-02 20:40:46,292 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2022-11-02 20:40:46,292 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 525 transitions. [2022-11-02 20:40:46,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 525 transitions. [2022-11-02 20:40:46,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:46,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 525 transitions. [2022-11-02 20:40:46,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 58.333333333333336) internal successors, (525), 9 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:46,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:46,297 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:46,298 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 198 flow. Second operand 9 states and 525 transitions. [2022-11-02 20:40:46,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 212 flow [2022-11-02 20:40:46,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 210 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:46,301 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 124 flow [2022-11-02 20:40:46,301 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=124, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2022-11-02 20:40:46,302 INFO L287 CegarLoopForPetriNet]: 77 programPoint places, -17 predicate places. [2022-11-02 20:40:46,302 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 124 flow [2022-11-02 20:40:46,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.5) internal successors, (575), 10 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:46,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:46,304 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 20:40:46,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:46,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:46,531 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-02 20:40:46,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:46,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1513828090, now seen corresponding path program 1 times [2022-11-02 20:40:46,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:46,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811683554] [2022-11-02 20:40:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:46,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:40:46,561 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:40:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:40:46,593 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:40:46,594 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:40:46,594 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-02 20:40:46,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2022-11-02 20:40:46,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2022-11-02 20:40:46,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2022-11-02 20:40:46,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2022-11-02 20:40:46,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2022-11-02 20:40:46,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2022-11-02 20:40:46,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:40:46,596 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:40:46,597 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:40:46,597 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:40:46,647 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:40:46,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 200 flow [2022-11-02 20:40:46,684 INFO L130 PetriNetUnfolder]: 24/282 cut-off events. [2022-11-02 20:40:46,684 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-02 20:40:46,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 282 events. 24/282 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 741 event pairs, 1 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 176. Up to 16 conditions per place. [2022-11-02 20:40:46,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 85 transitions, 200 flow [2022-11-02 20:40:46,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 85 transitions, 200 flow [2022-11-02 20:40:46,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:40:46,689 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@88a72cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:40:46,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-02 20:40:46,692 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2022-11-02 20:40:46,692 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:40:46,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:46,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:46,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-02 20:40:46,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:46,693 INFO L85 PathProgramCache]: Analyzing trace with hash -291591166, now seen corresponding path program 1 times [2022-11-02 20:40:46,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:46,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797543619] [2022-11-02 20:40:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:46,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:46,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:46,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797543619] [2022-11-02 20:40:46,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797543619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:46,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:46,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:40:46,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449006442] [2022-11-02 20:40:46,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:46,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:40:46,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:46,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:40:46,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:40:46,713 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2022-11-02 20:40:46,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 200 flow. Second operand has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:46,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:46,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2022-11-02 20:40:46,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:46,830 INFO L130 PetriNetUnfolder]: 36/448 cut-off events. [2022-11-02 20:40:46,831 INFO L131 PetriNetUnfolder]: For 115/170 co-relation queries the response was YES. [2022-11-02 20:40:46,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 448 events. 36/448 cut-off events. For 115/170 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2016 event pairs, 27 based on Foata normal form. 28/420 useless extension candidates. Maximal degree in co-relation 285. Up to 68 conditions per place. [2022-11-02 20:40:46,834 INFO L137 encePairwiseOnDemand]: 78/85 looper letters, 10 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2022-11-02 20:40:46,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 77 transitions, 204 flow [2022-11-02 20:40:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:40:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:40:46,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 151 transitions. [2022-11-02 20:40:46,836 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.888235294117647 [2022-11-02 20:40:46,837 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 151 transitions. [2022-11-02 20:40:46,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 151 transitions. [2022-11-02 20:40:46,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:46,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 151 transitions. [2022-11-02 20:40:46,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:46,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 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) [2022-11-02 20:40:46,839 INFO L81 ComplementDD]: Finished complementDD. Result 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) [2022-11-02 20:40:46,839 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 200 flow. Second operand 2 states and 151 transitions. [2022-11-02 20:40:46,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 77 transitions, 204 flow [2022-11-02 20:40:46,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 204 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:46,843 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 184 flow [2022-11-02 20:40:46,843 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=184, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2022-11-02 20:40:46,845 INFO L287 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2022-11-02 20:40:46,846 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 184 flow [2022-11-02 20:40:46,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:46,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:46,847 INFO L208 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] [2022-11-02 20:40:46,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:40:46,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-02 20:40:46,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash -399494064, now seen corresponding path program 1 times [2022-11-02 20:40:46,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:46,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137357526] [2022-11-02 20:40:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:46,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:46,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:46,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:46,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137357526] [2022-11-02 20:40:46,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137357526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:46,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:46,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:40:46,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273288167] [2022-11-02 20:40:46,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:46,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:46,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:46,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:46,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:40:46,900 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 85 [2022-11-02 20:40:46,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:46,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:46,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 85 [2022-11-02 20:40:46,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:47,068 INFO L130 PetriNetUnfolder]: 124/761 cut-off events. [2022-11-02 20:40:47,068 INFO L131 PetriNetUnfolder]: For 107/116 co-relation queries the response was YES. [2022-11-02 20:40:47,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 761 events. 124/761 cut-off events. For 107/116 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4391 event pairs, 67 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 1050. Up to 219 conditions per place. [2022-11-02 20:40:47,075 INFO L137 encePairwiseOnDemand]: 82/85 looper letters, 20 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2022-11-02 20:40:47,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 238 flow [2022-11-02 20:40:47,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:47,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:40:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2022-11-02 20:40:47,077 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.796078431372549 [2022-11-02 20:40:47,078 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 203 transitions. [2022-11-02 20:40:47,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 203 transitions. [2022-11-02 20:40:47,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:47,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 203 transitions. [2022-11-02 20:40:47,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:47,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:47,081 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:47,081 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 184 flow. Second operand 3 states and 203 transitions. [2022-11-02 20:40:47,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 238 flow [2022-11-02 20:40:47,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 82 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:47,085 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 196 flow [2022-11-02 20:40:47,086 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2022-11-02 20:40:47,086 INFO L287 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2022-11-02 20:40:47,087 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 196 flow [2022-11-02 20:40:47,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:47,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:47,088 INFO L208 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] [2022-11-02 20:40:47,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:40:47,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-02 20:40:47,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:47,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1587672897, now seen corresponding path program 1 times [2022-11-02 20:40:47,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:47,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231264562] [2022-11-02 20:40:47,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:47,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:47,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:47,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231264562] [2022-11-02 20:40:47,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231264562] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:47,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71750770] [2022-11-02 20:40:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:47,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:47,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:47,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:47,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:40:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:47,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:40:47,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:47,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:40:47,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:47,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71750770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:47,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:40:47,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-02 20:40:47,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8594125] [2022-11-02 20:40:47,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:47,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:47,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:47,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:47,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:40:47,303 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 85 [2022-11-02 20:40:47,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:47,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:47,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 85 [2022-11-02 20:40:47,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:47,530 INFO L130 PetriNetUnfolder]: 123/1143 cut-off events. [2022-11-02 20:40:47,530 INFO L131 PetriNetUnfolder]: For 212/269 co-relation queries the response was YES. [2022-11-02 20:40:47,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1143 events. 123/1143 cut-off events. For 212/269 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8151 event pairs, 40 based on Foata normal form. 6/1018 useless extension candidates. Maximal degree in co-relation 1468. Up to 166 conditions per place. [2022-11-02 20:40:47,541 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 15 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2022-11-02 20:40:47,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 259 flow [2022-11-02 20:40:47,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:47,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:40:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2022-11-02 20:40:47,544 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8352941176470589 [2022-11-02 20:40:47,544 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2022-11-02 20:40:47,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2022-11-02 20:40:47,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:47,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2022-11-02 20:40:47,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:47,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:47,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:47,546 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 196 flow. Second operand 3 states and 213 transitions. [2022-11-02 20:40:47,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 259 flow [2022-11-02 20:40:47,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 85 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:40:47,552 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 232 flow [2022-11-02 20:40:47,553 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2022-11-02 20:40:47,554 INFO L287 CegarLoopForPetriNet]: 86 programPoint places, 2 predicate places. [2022-11-02 20:40:47,554 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 232 flow [2022-11-02 20:40:47,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:47,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:47,555 INFO L208 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] [2022-11-02 20:40:47,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:47,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:40:47,773 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-02 20:40:47,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2109476918, now seen corresponding path program 1 times [2022-11-02 20:40:47,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:47,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790919460] [2022-11-02 20:40:47,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:47,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:47,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:47,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790919460] [2022-11-02 20:40:47,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790919460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:47,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595186480] [2022-11-02 20:40:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:47,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:47,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:47,854 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:47,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:40:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:47,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:40:47,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:48,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:48,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595186480] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:48,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:40:48,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:40:48,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119919213] [2022-11-02 20:40:48,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:48,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:40:48,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:48,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:40:48,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:40:48,089 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 85 [2022-11-02 20:40:48,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 232 flow. Second operand has 10 states, 10 states have (on average 61.5) internal successors, (615), 10 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:48,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:48,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 85 [2022-11-02 20:40:48,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:48,467 INFO L130 PetriNetUnfolder]: 197/1266 cut-off events. [2022-11-02 20:40:48,468 INFO L131 PetriNetUnfolder]: For 431/454 co-relation queries the response was YES. [2022-11-02 20:40:48,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 1266 events. 197/1266 cut-off events. For 431/454 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8627 event pairs, 34 based on Foata normal form. 6/1177 useless extension candidates. Maximal degree in co-relation 2009. Up to 203 conditions per place. [2022-11-02 20:40:48,481 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 35 selfloop transitions, 9 changer transitions 0/104 dead transitions. [2022-11-02 20:40:48,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 104 transitions, 390 flow [2022-11-02 20:40:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:48,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:40:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 574 transitions. [2022-11-02 20:40:48,485 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7503267973856209 [2022-11-02 20:40:48,485 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 574 transitions. [2022-11-02 20:40:48,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 574 transitions. [2022-11-02 20:40:48,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:48,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 574 transitions. [2022-11-02 20:40:48,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.77777777777778) internal successors, (574), 9 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:48,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:48,491 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:48,491 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 232 flow. Second operand 9 states and 574 transitions. [2022-11-02 20:40:48,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 104 transitions, 390 flow [2022-11-02 20:40:48,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:40:48,497 INFO L231 Difference]: Finished difference. Result has 97 places, 88 transitions, 272 flow [2022-11-02 20:40:48,497 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=272, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2022-11-02 20:40:48,498 INFO L287 CegarLoopForPetriNet]: 86 programPoint places, 11 predicate places. [2022-11-02 20:40:48,498 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 272 flow [2022-11-02 20:40:48,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.5) internal successors, (615), 10 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:48,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:48,499 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2022-11-02 20:40:48,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:48,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:40:48,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-02 20:40:48,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:48,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1472767584, now seen corresponding path program 1 times [2022-11-02 20:40:48,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:48,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914448552] [2022-11-02 20:40:48,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:48,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:40:48,753 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:40:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:40:48,795 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:40:48,802 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:40:48,803 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-11-02 20:40:48,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2022-11-02 20:40:48,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2022-11-02 20:40:48,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2022-11-02 20:40:48,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2022-11-02 20:40:48,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2022-11-02 20:40:48,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2022-11-02 20:40:48,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2022-11-02 20:40:48,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:40:48,807 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:40:48,809 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:40:48,809 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 20:40:48,848 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 20:40:48,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 93 transitions, 230 flow [2022-11-02 20:40:48,921 INFO L130 PetriNetUnfolder]: 47/488 cut-off events. [2022-11-02 20:40:48,921 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-02 20:40:48,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 488 events. 47/488 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1690 event pairs, 6 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 302. Up to 32 conditions per place. [2022-11-02 20:40:48,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 93 transitions, 230 flow [2022-11-02 20:40:48,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 93 transitions, 230 flow [2022-11-02 20:40:48,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:40:48,933 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@88a72cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:40:48,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-02 20:40:48,935 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2022-11-02 20:40:48,936 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:40:48,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:48,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:48,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:40:48,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:48,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1129449537, now seen corresponding path program 1 times [2022-11-02 20:40:48,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:48,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515154858] [2022-11-02 20:40:48,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:48,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:48,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:48,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515154858] [2022-11-02 20:40:48,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515154858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:48,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:48,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:40:48,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935180203] [2022-11-02 20:40:48,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:48,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:40:48,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:48,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:40:48,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:40:48,960 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 93 [2022-11-02 20:40:48,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 230 flow. Second operand has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:48,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:48,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 93 [2022-11-02 20:40:48,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:49,220 INFO L130 PetriNetUnfolder]: 157/1229 cut-off events. [2022-11-02 20:40:49,220 INFO L131 PetriNetUnfolder]: For 498/783 co-relation queries the response was YES. [2022-11-02 20:40:49,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 1229 events. 157/1229 cut-off events. For 498/783 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8147 event pairs, 128 based on Foata normal form. 76/1146 useless extension candidates. Maximal degree in co-relation 911. Up to 250 conditions per place. [2022-11-02 20:40:49,231 INFO L137 encePairwiseOnDemand]: 85/93 looper letters, 13 selfloop transitions, 0 changer transitions 0/84 dead transitions. [2022-11-02 20:40:49,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 84 transitions, 238 flow [2022-11-02 20:40:49,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:40:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:40:49,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 163 transitions. [2022-11-02 20:40:49,233 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8763440860215054 [2022-11-02 20:40:49,233 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 163 transitions. [2022-11-02 20:40:49,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 163 transitions. [2022-11-02 20:40:49,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:49,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 163 transitions. [2022-11-02 20:40:49,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:49,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:49,235 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:49,235 INFO L175 Difference]: Start difference. First operand has 95 places, 93 transitions, 230 flow. Second operand 2 states and 163 transitions. [2022-11-02 20:40:49,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 84 transitions, 238 flow [2022-11-02 20:40:49,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:49,238 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 212 flow [2022-11-02 20:40:49,239 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=212, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2022-11-02 20:40:49,239 INFO L287 CegarLoopForPetriNet]: 95 programPoint places, -5 predicate places. [2022-11-02 20:40:49,239 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 212 flow [2022-11-02 20:40:49,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:49,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:49,240 INFO L208 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] [2022-11-02 20:40:49,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:40:49,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:40:49,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:49,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1110771917, now seen corresponding path program 1 times [2022-11-02 20:40:49,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:49,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442677649] [2022-11-02 20:40:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:49,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:49,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:49,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442677649] [2022-11-02 20:40:49,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442677649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:49,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:49,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:40:49,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076155613] [2022-11-02 20:40:49,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:49,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:49,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:49,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:49,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:40:49,305 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 93 [2022-11-02 20:40:49,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:49,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:49,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 93 [2022-11-02 20:40:49,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:49,657 INFO L130 PetriNetUnfolder]: 416/2006 cut-off events. [2022-11-02 20:40:49,657 INFO L131 PetriNetUnfolder]: For 483/519 co-relation queries the response was YES. [2022-11-02 20:40:49,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2881 conditions, 2006 events. 416/2006 cut-off events. For 483/519 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 14441 event pairs, 266 based on Foata normal form. 0/1809 useless extension candidates. Maximal degree in co-relation 2874. Up to 649 conditions per place. [2022-11-02 20:40:49,673 INFO L137 encePairwiseOnDemand]: 90/93 looper letters, 23 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-11-02 20:40:49,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 272 flow [2022-11-02 20:40:49,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:49,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:40:49,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2022-11-02 20:40:49,675 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7813620071684588 [2022-11-02 20:40:49,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2022-11-02 20:40:49,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2022-11-02 20:40:49,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:49,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2022-11-02 20:40:49,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:49,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:49,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:49,678 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 212 flow. Second operand 3 states and 218 transitions. [2022-11-02 20:40:49,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 272 flow [2022-11-02 20:40:49,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:49,681 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 224 flow [2022-11-02 20:40:49,681 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2022-11-02 20:40:49,683 INFO L287 CegarLoopForPetriNet]: 95 programPoint places, -2 predicate places. [2022-11-02 20:40:49,683 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 224 flow [2022-11-02 20:40:49,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:49,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:49,684 INFO L208 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] [2022-11-02 20:40:49,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:40:49,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:40:49,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:49,685 INFO L85 PathProgramCache]: Analyzing trace with hash -924067932, now seen corresponding path program 1 times [2022-11-02 20:40:49,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:49,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019931755] [2022-11-02 20:40:49,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:49,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:49,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:49,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019931755] [2022-11-02 20:40:49,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019931755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:49,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124002820] [2022-11-02 20:40:49,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:49,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:49,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:49,805 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:49,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:40:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:49,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:40:49,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:40:49,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:49,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124002820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:49,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:40:49,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-02 20:40:49,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107535151] [2022-11-02 20:40:49,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:49,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:49,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:49,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:49,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:40:49,903 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 93 [2022-11-02 20:40:49,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:49,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:49,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 93 [2022-11-02 20:40:49,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:50,527 INFO L130 PetriNetUnfolder]: 492/3400 cut-off events. [2022-11-02 20:40:50,528 INFO L131 PetriNetUnfolder]: For 894/1135 co-relation queries the response was YES. [2022-11-02 20:40:50,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4497 conditions, 3400 events. 492/3400 cut-off events. For 894/1135 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 31037 event pairs, 183 based on Foata normal form. 10/3034 useless extension candidates. Maximal degree in co-relation 4488. Up to 584 conditions per place. [2022-11-02 20:40:50,563 INFO L137 encePairwiseOnDemand]: 86/93 looper letters, 19 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2022-11-02 20:40:50,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 304 flow [2022-11-02 20:40:50,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:50,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:40:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2022-11-02 20:40:50,565 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8243727598566308 [2022-11-02 20:40:50,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2022-11-02 20:40:50,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2022-11-02 20:40:50,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:50,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2022-11-02 20:40:50,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:50,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:50,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:50,569 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 224 flow. Second operand 3 states and 230 transitions. [2022-11-02 20:40:50,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 304 flow [2022-11-02 20:40:50,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:40:50,622 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 268 flow [2022-11-02 20:40:50,622 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2022-11-02 20:40:50,623 INFO L287 CegarLoopForPetriNet]: 95 programPoint places, 1 predicate places. [2022-11-02 20:40:50,623 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 268 flow [2022-11-02 20:40:50,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:50,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:50,623 INFO L208 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] [2022-11-02 20:40:50,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:50,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:40:50,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:40:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:50,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1834592202, now seen corresponding path program 1 times [2022-11-02 20:40:50,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:50,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949978571] [2022-11-02 20:40:50,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:50,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:50,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:50,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949978571] [2022-11-02 20:40:50,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949978571] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:50,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228608462] [2022-11-02 20:40:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:50,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:50,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:50,941 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:50,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:40:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:51,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:40:51,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:51,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:51,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228608462] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:51,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:40:51,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:40:51,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329742907] [2022-11-02 20:40:51,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:51,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:40:51,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:51,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:40:51,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:40:51,144 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 93 [2022-11-02 20:40:51,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 268 flow. Second operand has 10 states, 10 states have (on average 65.5) internal successors, (655), 10 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:51,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:51,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 93 [2022-11-02 20:40:51,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:51,978 INFO L130 PetriNetUnfolder]: 758/3763 cut-off events. [2022-11-02 20:40:51,979 INFO L131 PetriNetUnfolder]: For 1660/1759 co-relation queries the response was YES. [2022-11-02 20:40:51,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6254 conditions, 3763 events. 758/3763 cut-off events. For 1660/1759 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 33656 event pairs, 147 based on Foata normal form. 6/3474 useless extension candidates. Maximal degree in co-relation 6244. Up to 786 conditions per place. [2022-11-02 20:40:52,022 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 40 selfloop transitions, 9 changer transitions 0/113 dead transitions. [2022-11-02 20:40:52,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 113 transitions, 440 flow [2022-11-02 20:40:52,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:52,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:40:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 614 transitions. [2022-11-02 20:40:52,025 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7335722819593787 [2022-11-02 20:40:52,026 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 614 transitions. [2022-11-02 20:40:52,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 614 transitions. [2022-11-02 20:40:52,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:52,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 614 transitions. [2022-11-02 20:40:52,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.22222222222223) internal successors, (614), 9 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:52,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:52,032 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:52,032 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 268 flow. Second operand 9 states and 614 transitions. [2022-11-02 20:40:52,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 113 transitions, 440 flow [2022-11-02 20:40:52,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 113 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:40:52,038 INFO L231 Difference]: Finished difference. Result has 105 places, 96 transitions, 306 flow [2022-11-02 20:40:52,038 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=306, PETRI_PLACES=105, PETRI_TRANSITIONS=96} [2022-11-02 20:40:52,039 INFO L287 CegarLoopForPetriNet]: 95 programPoint places, 10 predicate places. [2022-11-02 20:40:52,039 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 96 transitions, 306 flow [2022-11-02 20:40:52,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.5) internal successors, (655), 10 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:52,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:52,040 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-11-02 20:40:52,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:52,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:40:52,266 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:40:52,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:52,267 INFO L85 PathProgramCache]: Analyzing trace with hash -257989895, now seen corresponding path program 1 times [2022-11-02 20:40:52,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:52,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825632226] [2022-11-02 20:40:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:52,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:52,399 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:52,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:52,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825632226] [2022-11-02 20:40:52,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825632226] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:52,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854301237] [2022-11-02 20:40:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:52,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:52,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:52,402 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:52,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:40:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:52,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:40:52,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:52,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:52,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854301237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:52,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:40:52,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-02 20:40:52,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476681305] [2022-11-02 20:40:52,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:52,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:40:52,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:40:52,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:40:52,771 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 93 [2022-11-02 20:40:52,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 96 transitions, 306 flow. Second operand has 18 states, 18 states have (on average 65.72222222222223) internal successors, (1183), 18 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:52,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:52,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 93 [2022-11-02 20:40:52,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:53,113 INFO L130 PetriNetUnfolder]: 279/649 cut-off events. [2022-11-02 20:40:53,113 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2022-11-02 20:40:53,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 649 events. 279/649 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3189 event pairs, 0 based on Foata normal form. 24/673 useless extension candidates. Maximal degree in co-relation 1741. Up to 295 conditions per place. [2022-11-02 20:40:53,122 INFO L137 encePairwiseOnDemand]: 88/93 looper letters, 50 selfloop transitions, 13 changer transitions 0/101 dead transitions. [2022-11-02 20:40:53,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 101 transitions, 486 flow [2022-11-02 20:40:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:40:53,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-02 20:40:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1010 transitions. [2022-11-02 20:40:53,127 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7240143369175627 [2022-11-02 20:40:53,127 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1010 transitions. [2022-11-02 20:40:53,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1010 transitions. [2022-11-02 20:40:53,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:53,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1010 transitions. [2022-11-02 20:40:53,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 67.33333333333333) internal successors, (1010), 15 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:53,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 93.0) internal successors, (1488), 16 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:53,136 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 93.0) internal successors, (1488), 16 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:53,136 INFO L175 Difference]: Start difference. First operand has 105 places, 96 transitions, 306 flow. Second operand 15 states and 1010 transitions. [2022-11-02 20:40:53,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 101 transitions, 486 flow [2022-11-02 20:40:53,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 101 transitions, 457 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-11-02 20:40:53,143 INFO L231 Difference]: Finished difference. Result has 88 places, 64 transitions, 216 flow [2022-11-02 20:40:53,144 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=216, PETRI_PLACES=88, PETRI_TRANSITIONS=64} [2022-11-02 20:40:53,144 INFO L287 CegarLoopForPetriNet]: 95 programPoint places, -7 predicate places. [2022-11-02 20:40:53,145 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 64 transitions, 216 flow [2022-11-02 20:40:53,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.72222222222223) internal successors, (1183), 18 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:53,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:53,147 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:53,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:53,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:53,358 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:40:53,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:53,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1165116785, now seen corresponding path program 1 times [2022-11-02 20:40:53,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:53,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57860192] [2022-11-02 20:40:53,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:53,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:40:53,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:40:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:40:53,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:40:53,401 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:40:53,402 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-02 20:40:53,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-11-02 20:40:53,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-11-02 20:40:53,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-11-02 20:40:53,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-11-02 20:40:53,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-11-02 20:40:53,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-11-02 20:40:53,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-11-02 20:40:53,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-11-02 20:40:53,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:40:53,404 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 20:40:53,405 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:40:53,405 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-02 20:40:53,435 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-02 20:40:53,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 101 transitions, 262 flow [2022-11-02 20:40:53,580 INFO L130 PetriNetUnfolder]: 98/882 cut-off events. [2022-11-02 20:40:53,580 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-02 20:40:53,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 882 events. 98/882 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4067 event pairs, 23 based on Foata normal form. 0/756 useless extension candidates. Maximal degree in co-relation 533. Up to 80 conditions per place. [2022-11-02 20:40:53,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 101 transitions, 262 flow [2022-11-02 20:40:53,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 101 transitions, 262 flow [2022-11-02 20:40:53,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:40:53,593 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@88a72cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:40:53,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-02 20:40:53,596 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-02 20:40:53,596 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:40:53,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:53,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:53,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-02 20:40:53,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash 500652676, now seen corresponding path program 1 times [2022-11-02 20:40:53,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:53,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475297642] [2022-11-02 20:40:53,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:53,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:53,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:53,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:53,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475297642] [2022-11-02 20:40:53,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475297642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:53,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:53,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:40:53,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105502297] [2022-11-02 20:40:53,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:53,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:40:53,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:53,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:40:53,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:40:53,615 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 101 [2022-11-02 20:40:53,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 262 flow. Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:53,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:53,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 101 [2022-11-02 20:40:53,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:54,224 INFO L130 PetriNetUnfolder]: 622/3620 cut-off events. [2022-11-02 20:40:54,224 INFO L131 PetriNetUnfolder]: For 1636/2943 co-relation queries the response was YES. [2022-11-02 20:40:54,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5088 conditions, 3620 events. 622/3620 cut-off events. For 1636/2943 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 32124 event pairs, 527 based on Foata normal form. 221/3362 useless extension candidates. Maximal degree in co-relation 2965. Up to 892 conditions per place. [2022-11-02 20:40:54,268 INFO L137 encePairwiseOnDemand]: 92/101 looper letters, 16 selfloop transitions, 0 changer transitions 0/91 dead transitions. [2022-11-02 20:40:54,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 274 flow [2022-11-02 20:40:54,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:40:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:40:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 175 transitions. [2022-11-02 20:40:54,270 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8663366336633663 [2022-11-02 20:40:54,270 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 175 transitions. [2022-11-02 20:40:54,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 175 transitions. [2022-11-02 20:40:54,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:54,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 175 transitions. [2022-11-02 20:40:54,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:54,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:54,272 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:54,272 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 262 flow. Second operand 2 states and 175 transitions. [2022-11-02 20:40:54,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 274 flow [2022-11-02 20:40:54,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:54,277 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 242 flow [2022-11-02 20:40:54,277 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=242, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2022-11-02 20:40:54,278 INFO L287 CegarLoopForPetriNet]: 104 programPoint places, -6 predicate places. [2022-11-02 20:40:54,278 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 242 flow [2022-11-02 20:40:54,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:54,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:54,279 INFO L208 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] [2022-11-02 20:40:54,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:40:54,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-02 20:40:54,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:54,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1457844818, now seen corresponding path program 1 times [2022-11-02 20:40:54,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:54,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962220493] [2022-11-02 20:40:54,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:54,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:54,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:54,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962220493] [2022-11-02 20:40:54,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962220493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:54,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:54,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:40:54,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625918596] [2022-11-02 20:40:54,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:54,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:54,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:54,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:54,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:40:54,308 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 101 [2022-11-02 20:40:54,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:54,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:54,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 101 [2022-11-02 20:40:54,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:55,153 INFO L130 PetriNetUnfolder]: 1308/5425 cut-off events. [2022-11-02 20:40:55,154 INFO L131 PetriNetUnfolder]: For 1746/1863 co-relation queries the response was YES. [2022-11-02 20:40:55,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7984 conditions, 5425 events. 1308/5425 cut-off events. For 1746/1863 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 47507 event pairs, 923 based on Foata normal form. 0/4878 useless extension candidates. Maximal degree in co-relation 7976. Up to 1871 conditions per place. [2022-11-02 20:40:55,190 INFO L137 encePairwiseOnDemand]: 98/101 looper letters, 26 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2022-11-02 20:40:55,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 308 flow [2022-11-02 20:40:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:40:55,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2022-11-02 20:40:55,192 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.768976897689769 [2022-11-02 20:40:55,192 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2022-11-02 20:40:55,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2022-11-02 20:40:55,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:55,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2022-11-02 20:40:55,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:55,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:55,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:55,194 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 242 flow. Second operand 3 states and 233 transitions. [2022-11-02 20:40:55,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 308 flow [2022-11-02 20:40:55,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:55,197 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 254 flow [2022-11-02 20:40:55,198 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2022-11-02 20:40:55,198 INFO L287 CegarLoopForPetriNet]: 104 programPoint places, -3 predicate places. [2022-11-02 20:40:55,198 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 254 flow [2022-11-02 20:40:55,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:55,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:55,199 INFO L208 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] [2022-11-02 20:40:55,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:40:55,199 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-02 20:40:55,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:55,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1991616527, now seen corresponding path program 1 times [2022-11-02 20:40:55,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:55,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175434011] [2022-11-02 20:40:55,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:55,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:55,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:55,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175434011] [2022-11-02 20:40:55,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175434011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:55,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518203602] [2022-11-02 20:40:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:55,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:55,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:55,306 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:55,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:40:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:40:55,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:40:55,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:55,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518203602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:55,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:40:55,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-02 20:40:55,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722584088] [2022-11-02 20:40:55,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:55,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:55,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:55,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:55,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:40:55,414 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 101 [2022-11-02 20:40:55,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:55,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:55,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 101 [2022-11-02 20:40:55,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:56,929 INFO L130 PetriNetUnfolder]: 1758/10152 cut-off events. [2022-11-02 20:40:56,929 INFO L131 PetriNetUnfolder]: For 3009/3879 co-relation queries the response was YES. [2022-11-02 20:40:56,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13706 conditions, 10152 events. 1758/10152 cut-off events. For 3009/3879 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 113234 event pairs, 725 based on Foata normal form. 15/9094 useless extension candidates. Maximal degree in co-relation 13696. Up to 1923 conditions per place. [2022-11-02 20:40:57,083 INFO L137 encePairwiseOnDemand]: 93/101 looper letters, 23 selfloop transitions, 7 changer transitions 0/103 dead transitions. [2022-11-02 20:40:57,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 351 flow [2022-11-02 20:40:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:40:57,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2022-11-02 20:40:57,088 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8151815181518152 [2022-11-02 20:40:57,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2022-11-02 20:40:57,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2022-11-02 20:40:57,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:57,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2022-11-02 20:40:57,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-11-02 20:40:57,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:57,091 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:57,091 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 254 flow. Second operand 3 states and 247 transitions. [2022-11-02 20:40:57,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 351 flow [2022-11-02 20:40:57,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:40:57,098 INFO L231 Difference]: Finished difference. Result has 104 places, 98 transitions, 306 flow [2022-11-02 20:40:57,098 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=104, PETRI_TRANSITIONS=98} [2022-11-02 20:40:57,098 INFO L287 CegarLoopForPetriNet]: 104 programPoint places, 0 predicate places. [2022-11-02 20:40:57,099 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 98 transitions, 306 flow [2022-11-02 20:40:57,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:57,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:57,099 INFO L208 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] [2022-11-02 20:40:57,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:57,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:57,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-02 20:40:57,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:57,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1571631562, now seen corresponding path program 1 times [2022-11-02 20:40:57,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:57,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580514095] [2022-11-02 20:40:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:57,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:57,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:57,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580514095] [2022-11-02 20:40:57,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580514095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:57,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044094409] [2022-11-02 20:40:57,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:57,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:57,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:57,391 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:57,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:40:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:57,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:40:57,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:57,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:57,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:57,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044094409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:57,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:40:57,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:40:57,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021263952] [2022-11-02 20:40:57,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:57,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:40:57,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:57,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:40:57,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:40:57,561 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 101 [2022-11-02 20:40:57,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 98 transitions, 306 flow. Second operand has 10 states, 10 states have (on average 69.5) internal successors, (695), 10 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:57,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:57,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 101 [2022-11-02 20:40:57,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:59,151 INFO L130 PetriNetUnfolder]: 2504/10876 cut-off events. [2022-11-02 20:40:59,151 INFO L131 PetriNetUnfolder]: For 5603/5939 co-relation queries the response was YES. [2022-11-02 20:40:59,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18520 conditions, 10876 events. 2504/10876 cut-off events. For 5603/5939 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 115133 event pairs, 585 based on Foata normal form. 6/9977 useless extension candidates. Maximal degree in co-relation 18509. Up to 2631 conditions per place. [2022-11-02 20:40:59,246 INFO L137 encePairwiseOnDemand]: 95/101 looper letters, 45 selfloop transitions, 9 changer transitions 0/122 dead transitions. [2022-11-02 20:40:59,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 122 transitions, 492 flow [2022-11-02 20:40:59,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:40:59,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 654 transitions. [2022-11-02 20:40:59,249 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7194719471947195 [2022-11-02 20:40:59,249 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 654 transitions. [2022-11-02 20:40:59,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 654 transitions. [2022-11-02 20:40:59,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:59,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 654 transitions. [2022-11-02 20:40:59,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.66666666666667) internal successors, (654), 9 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:59,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 101.0) internal successors, (1010), 10 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:59,255 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 101.0) internal successors, (1010), 10 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:59,255 INFO L175 Difference]: Start difference. First operand has 104 places, 98 transitions, 306 flow. Second operand 9 states and 654 transitions. [2022-11-02 20:40:59,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 122 transitions, 492 flow [2022-11-02 20:40:59,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 122 transitions, 478 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:40:59,266 INFO L231 Difference]: Finished difference. Result has 113 places, 104 transitions, 342 flow [2022-11-02 20:40:59,266 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=342, PETRI_PLACES=113, PETRI_TRANSITIONS=104} [2022-11-02 20:40:59,267 INFO L287 CegarLoopForPetriNet]: 104 programPoint places, 9 predicate places. [2022-11-02 20:40:59,267 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 104 transitions, 342 flow [2022-11-02 20:40:59,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.5) internal successors, (695), 10 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:59,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:59,276 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-11-02 20:40:59,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:59,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-02 20:40:59,489 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-02 20:40:59,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash -747920851, now seen corresponding path program 1 times [2022-11-02 20:40:59,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:59,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551611084] [2022-11-02 20:40:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:59,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:59,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:59,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551611084] [2022-11-02 20:40:59,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551611084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:59,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366587852] [2022-11-02 20:40:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:59,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:59,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:59,667 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:59,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:40:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:59,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:40:59,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:59,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:00,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366587852] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:00,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:41:00,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-02 20:41:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856015531] [2022-11-02 20:41:00,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:00,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:41:00,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:00,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:41:00,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:41:00,066 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 101 [2022-11-02 20:41:00,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 104 transitions, 342 flow. Second operand has 18 states, 18 states have (on average 69.72222222222223) internal successors, (1255), 18 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:00,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:00,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 101 [2022-11-02 20:41:00,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:00,730 INFO L130 PetriNetUnfolder]: 743/1481 cut-off events. [2022-11-02 20:41:00,731 INFO L131 PetriNetUnfolder]: For 1554/1554 co-relation queries the response was YES. [2022-11-02 20:41:00,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4138 conditions, 1481 events. 743/1481 cut-off events. For 1554/1554 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8147 event pairs, 0 based on Foata normal form. 56/1537 useless extension candidates. Maximal degree in co-relation 4125. Up to 775 conditions per place. [2022-11-02 20:41:00,743 INFO L137 encePairwiseOnDemand]: 96/101 looper letters, 69 selfloop transitions, 16 changer transitions 0/127 dead transitions. [2022-11-02 20:41:00,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 127 transitions, 641 flow [2022-11-02 20:41:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:41:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:41:00,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1294 transitions. [2022-11-02 20:41:00,749 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7117711771177118 [2022-11-02 20:41:00,749 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1294 transitions. [2022-11-02 20:41:00,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1294 transitions. [2022-11-02 20:41:00,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:00,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1294 transitions. [2022-11-02 20:41:00,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 71.88888888888889) internal successors, (1294), 18 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:00,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 101.0) internal successors, (1919), 19 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:00,757 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 101.0) internal successors, (1919), 19 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:00,757 INFO L175 Difference]: Start difference. First operand has 113 places, 104 transitions, 342 flow. Second operand 18 states and 1294 transitions. [2022-11-02 20:41:00,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 127 transitions, 641 flow [2022-11-02 20:41:00,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 127 transitions, 600 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-02 20:41:00,762 INFO L231 Difference]: Finished difference. Result has 99 places, 73 transitions, 254 flow [2022-11-02 20:41:00,762 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=254, PETRI_PLACES=99, PETRI_TRANSITIONS=73} [2022-11-02 20:41:00,763 INFO L287 CegarLoopForPetriNet]: 104 programPoint places, -5 predicate places. [2022-11-02 20:41:00,763 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 73 transitions, 254 flow [2022-11-02 20:41:00,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.72222222222223) internal successors, (1255), 18 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:00,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:00,764 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:00,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:00,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-02 20:41:00,982 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-02 20:41:00,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:00,983 INFO L85 PathProgramCache]: Analyzing trace with hash -567303917, now seen corresponding path program 1 times [2022-11-02 20:41:00,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:00,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887020096] [2022-11-02 20:41:00,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:00,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:01,007 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:41:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:01,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:41:01,045 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:41:01,046 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-02 20:41:01,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2022-11-02 20:41:01,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2022-11-02 20:41:01,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2022-11-02 20:41:01,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2022-11-02 20:41:01,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2022-11-02 20:41:01,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2022-11-02 20:41:01,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2022-11-02 20:41:01,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2022-11-02 20:41:01,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2022-11-02 20:41:01,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:41:01,048 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 20:41:01,049 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:41:01,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-11-02 20:41:01,082 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-02 20:41:01,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 109 transitions, 296 flow [2022-11-02 20:41:01,293 INFO L130 PetriNetUnfolder]: 213/1660 cut-off events. [2022-11-02 20:41:01,294 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2022-11-02 20:41:01,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 1660 events. 213/1660 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9873 event pairs, 72 based on Foata normal form. 0/1433 useless extension candidates. Maximal degree in co-relation 981. Up to 192 conditions per place. [2022-11-02 20:41:01,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 109 transitions, 296 flow [2022-11-02 20:41:01,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 109 transitions, 296 flow [2022-11-02 20:41:01,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:41:01,308 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@88a72cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:41:01,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-02 20:41:01,309 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-02 20:41:01,310 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:41:01,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:01,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:01,310 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-02 20:41:01,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:01,311 INFO L85 PathProgramCache]: Analyzing trace with hash 303748177, now seen corresponding path program 1 times [2022-11-02 20:41:01,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:01,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116583797] [2022-11-02 20:41:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:01,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:01,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:01,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116583797] [2022-11-02 20:41:01,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116583797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:01,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:01,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:41:01,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068243737] [2022-11-02 20:41:01,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:01,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:41:01,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:01,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:41:01,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:41:01,325 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 109 [2022-11-02 20:41:01,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 296 flow. Second operand has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:01,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:01,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 109 [2022-11-02 20:41:01,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:02,679 INFO L130 PetriNetUnfolder]: 2323/11021 cut-off events. [2022-11-02 20:41:02,679 INFO L131 PetriNetUnfolder]: For 5791/11129 co-relation queries the response was YES. [2022-11-02 20:41:02,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15986 conditions, 11021 events. 2323/11021 cut-off events. For 5791/11129 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 121119 event pairs, 2016 based on Foata normal form. 651/10198 useless extension candidates. Maximal degree in co-relation 9663. Up to 3110 conditions per place. [2022-11-02 20:41:02,755 INFO L137 encePairwiseOnDemand]: 99/109 looper letters, 19 selfloop transitions, 0 changer transitions 0/98 dead transitions. [2022-11-02 20:41:02,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 98 transitions, 312 flow [2022-11-02 20:41:02,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:41:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:41:02,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 187 transitions. [2022-11-02 20:41:02,757 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8577981651376146 [2022-11-02 20:41:02,757 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 187 transitions. [2022-11-02 20:41:02,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 187 transitions. [2022-11-02 20:41:02,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:02,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 187 transitions. [2022-11-02 20:41:02,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:02,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:02,759 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:02,759 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 296 flow. Second operand 2 states and 187 transitions. [2022-11-02 20:41:02,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 98 transitions, 312 flow [2022-11-02 20:41:02,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 98 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:41:02,763 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 274 flow [2022-11-02 20:41:02,763 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=274, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2022-11-02 20:41:02,764 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, -7 predicate places. [2022-11-02 20:41:02,764 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 274 flow [2022-11-02 20:41:02,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:02,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:02,765 INFO L208 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] [2022-11-02 20:41:02,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 20:41:02,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-02 20:41:02,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:02,765 INFO L85 PathProgramCache]: Analyzing trace with hash 641724639, now seen corresponding path program 1 times [2022-11-02 20:41:02,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:02,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711222378] [2022-11-02 20:41:02,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:02,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:02,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:02,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711222378] [2022-11-02 20:41:02,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711222378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:02,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:02,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:02,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248478426] [2022-11-02 20:41:02,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:02,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:02,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:02,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:02,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:02,788 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 109 [2022-11-02 20:41:02,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:02,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:02,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 109 [2022-11-02 20:41:02,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:04,944 INFO L130 PetriNetUnfolder]: 4032/15068 cut-off events. [2022-11-02 20:41:04,944 INFO L131 PetriNetUnfolder]: For 5972/6332 co-relation queries the response was YES. [2022-11-02 20:41:04,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22611 conditions, 15068 events. 4032/15068 cut-off events. For 5972/6332 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 156055 event pairs, 3034 based on Foata normal form. 0/13470 useless extension candidates. Maximal degree in co-relation 22602. Up to 5417 conditions per place. [2022-11-02 20:41:05,026 INFO L137 encePairwiseOnDemand]: 106/109 looper letters, 29 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2022-11-02 20:41:05,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 103 transitions, 346 flow [2022-11-02 20:41:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:41:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2022-11-02 20:41:05,027 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7584097859327217 [2022-11-02 20:41:05,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2022-11-02 20:41:05,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2022-11-02 20:41:05,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:05,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2022-11-02 20:41:05,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:05,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:05,030 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:05,030 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 274 flow. Second operand 3 states and 248 transitions. [2022-11-02 20:41:05,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 103 transitions, 346 flow [2022-11-02 20:41:05,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:41:05,035 INFO L231 Difference]: Finished difference. Result has 109 places, 99 transitions, 286 flow [2022-11-02 20:41:05,035 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=109, PETRI_TRANSITIONS=99} [2022-11-02 20:41:05,036 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, -4 predicate places. [2022-11-02 20:41:05,036 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 99 transitions, 286 flow [2022-11-02 20:41:05,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:05,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:05,036 INFO L208 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] [2022-11-02 20:41:05,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 20:41:05,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-02 20:41:05,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:05,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1744791682, now seen corresponding path program 1 times [2022-11-02 20:41:05,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:05,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592729864] [2022-11-02 20:41:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:05,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:05,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:05,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592729864] [2022-11-02 20:41:05,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592729864] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:05,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198770897] [2022-11-02 20:41:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:05,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:05,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:05,099 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:05,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:41:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:05,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:41:05,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:41:05,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:05,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198770897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:05,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:41:05,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-02 20:41:05,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871177207] [2022-11-02 20:41:05,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:05,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:05,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:05,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:05,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:41:05,235 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 109 [2022-11-02 20:41:05,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 286 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) [2022-11-02 20:41:05,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:05,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 109 [2022-11-02 20:41:05,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:08,992 INFO L130 PetriNetUnfolder]: 5989/30471 cut-off events. [2022-11-02 20:41:08,992 INFO L131 PetriNetUnfolder]: For 10616/13463 co-relation queries the response was YES. [2022-11-02 20:41:09,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41927 conditions, 30471 events. 5989/30471 cut-off events. For 10616/13463 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 400433 event pairs, 2688 based on Foata normal form. 21/27397 useless extension candidates. Maximal degree in co-relation 41916. Up to 6167 conditions per place. [2022-11-02 20:41:09,328 INFO L137 encePairwiseOnDemand]: 100/109 looper letters, 27 selfloop transitions, 8 changer transitions 0/112 dead transitions. [2022-11-02 20:41:09,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 112 transitions, 400 flow [2022-11-02 20:41:09,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:09,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:41:09,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2022-11-02 20:41:09,330 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8073394495412844 [2022-11-02 20:41:09,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2022-11-02 20:41:09,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2022-11-02 20:41:09,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:09,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2022-11-02 20:41:09,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:09,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:09,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:09,333 INFO L175 Difference]: Start difference. First operand has 109 places, 99 transitions, 286 flow. Second operand 3 states and 264 transitions. [2022-11-02 20:41:09,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 112 transitions, 400 flow [2022-11-02 20:41:09,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 112 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:41:09,342 INFO L231 Difference]: Finished difference. Result has 112 places, 106 transitions, 346 flow [2022-11-02 20:41:09,342 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=112, PETRI_TRANSITIONS=106} [2022-11-02 20:41:09,343 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, -1 predicate places. [2022-11-02 20:41:09,343 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 106 transitions, 346 flow [2022-11-02 20:41:09,343 INFO L496 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) [2022-11-02 20:41:09,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:09,343 INFO L208 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] [2022-11-02 20:41:09,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-02 20:41:09,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-02 20:41:09,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-02 20:41:09,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:09,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1397716646, now seen corresponding path program 1 times [2022-11-02 20:41:09,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:09,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529212581] [2022-11-02 20:41:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:09,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:09,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:09,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529212581] [2022-11-02 20:41:09,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529212581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:09,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253416526] [2022-11-02 20:41:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:09,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:09,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:09,638 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:09,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:41:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:09,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:41:09,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:09,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:09,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253416526] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:09,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:41:09,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:41:09,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656301042] [2022-11-02 20:41:09,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:09,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:41:09,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:09,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:41:09,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:41:09,820 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 109 [2022-11-02 20:41:09,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 106 transitions, 346 flow. Second operand has 10 states, 10 states have (on average 73.5) internal successors, (735), 10 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:09,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:09,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 109 [2022-11-02 20:41:09,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:13,931 INFO L130 PetriNetUnfolder]: 7887/31423 cut-off events. [2022-11-02 20:41:13,932 INFO L131 PetriNetUnfolder]: For 18614/19672 co-relation queries the response was YES. [2022-11-02 20:41:14,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54362 conditions, 31423 events. 7887/31423 cut-off events. For 18614/19672 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 384291 event pairs, 2142 based on Foata normal form. 6/28635 useless extension candidates. Maximal degree in co-relation 54350. Up to 8409 conditions per place. [2022-11-02 20:41:14,316 INFO L137 encePairwiseOnDemand]: 103/109 looper letters, 50 selfloop transitions, 9 changer transitions 0/131 dead transitions. [2022-11-02 20:41:14,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 131 transitions, 546 flow [2022-11-02 20:41:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:41:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:41:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 694 transitions. [2022-11-02 20:41:14,319 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7074413863404689 [2022-11-02 20:41:14,319 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 694 transitions. [2022-11-02 20:41:14,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 694 transitions. [2022-11-02 20:41:14,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:14,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 694 transitions. [2022-11-02 20:41:14,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.11111111111111) internal successors, (694), 9 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:14,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:14,326 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:14,326 INFO L175 Difference]: Start difference. First operand has 112 places, 106 transitions, 346 flow. Second operand 9 states and 694 transitions. [2022-11-02 20:41:14,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 131 transitions, 546 flow [2022-11-02 20:41:14,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 131 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:41:14,344 INFO L231 Difference]: Finished difference. Result has 121 places, 112 transitions, 380 flow [2022-11-02 20:41:14,344 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=380, PETRI_PLACES=121, PETRI_TRANSITIONS=112} [2022-11-02 20:41:14,345 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 8 predicate places. [2022-11-02 20:41:14,345 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 112 transitions, 380 flow [2022-11-02 20:41:14,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.5) internal successors, (735), 10 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:14,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:14,346 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-11-02 20:41:14,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-02 20:41:14,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:14,570 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-02 20:41:14,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:14,571 INFO L85 PathProgramCache]: Analyzing trace with hash 163452763, now seen corresponding path program 1 times [2022-11-02 20:41:14,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:14,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463272546] [2022-11-02 20:41:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:14,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:14,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:14,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463272546] [2022-11-02 20:41:14,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463272546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:14,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180815023] [2022-11-02 20:41:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:14,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:14,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:14,687 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:14,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 20:41:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:14,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:41:14,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:14,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:15,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180815023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:15,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:41:15,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-02 20:41:15,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946047782] [2022-11-02 20:41:15,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:15,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:41:15,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:15,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:41:15,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:41:15,003 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 109 [2022-11-02 20:41:15,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 112 transitions, 380 flow. Second operand has 18 states, 18 states have (on average 73.72222222222223) internal successors, (1327), 18 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:15,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:15,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 109 [2022-11-02 20:41:15,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:15,641 INFO L130 PetriNetUnfolder]: 1863/3337 cut-off events. [2022-11-02 20:41:15,642 INFO L131 PetriNetUnfolder]: For 4066/4066 co-relation queries the response was YES. [2022-11-02 20:41:15,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9547 conditions, 3337 events. 1863/3337 cut-off events. For 4066/4066 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19665 event pairs, 0 based on Foata normal form. 120/3457 useless extension candidates. Maximal degree in co-relation 9533. Up to 1927 conditions per place. [2022-11-02 20:41:15,670 INFO L137 encePairwiseOnDemand]: 104/109 looper letters, 91 selfloop transitions, 19 changer transitions 0/156 dead transitions. [2022-11-02 20:41:15,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 156 transitions, 816 flow [2022-11-02 20:41:15,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:41:15,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:41:15,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1605 transitions. [2022-11-02 20:41:15,674 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7011795543905636 [2022-11-02 20:41:15,674 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1605 transitions. [2022-11-02 20:41:15,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1605 transitions. [2022-11-02 20:41:15,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:15,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1605 transitions. [2022-11-02 20:41:15,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 76.42857142857143) internal successors, (1605), 21 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:15,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 109.0) internal successors, (2398), 22 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:15,683 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 109.0) internal successors, (2398), 22 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:15,683 INFO L175 Difference]: Start difference. First operand has 121 places, 112 transitions, 380 flow. Second operand 21 states and 1605 transitions. [2022-11-02 20:41:15,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 156 transitions, 816 flow [2022-11-02 20:41:15,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 156 transitions, 761 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-02 20:41:15,694 INFO L231 Difference]: Finished difference. Result has 110 places, 82 transitions, 292 flow [2022-11-02 20:41:15,694 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=292, PETRI_PLACES=110, PETRI_TRANSITIONS=82} [2022-11-02 20:41:15,694 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, -3 predicate places. [2022-11-02 20:41:15,695 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 82 transitions, 292 flow [2022-11-02 20:41:15,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 73.72222222222223) internal successors, (1327), 18 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:15,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:15,714 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:15,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:15,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-02 20:41:15,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-02 20:41:15,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:15,943 INFO L85 PathProgramCache]: Analyzing trace with hash -83408276, now seen corresponding path program 1 times [2022-11-02 20:41:15,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:15,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240484304] [2022-11-02 20:41:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:15,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:15,968 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:41:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:15,988 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:41:15,989 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:41:15,989 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-02 20:41:15,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-02 20:41:15,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-02 20:41:15,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-02 20:41:15,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-02 20:41:15,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-02 20:41:15,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-02 20:41:15,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-02 20:41:15,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-02 20:41:15,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-02 20:41:15,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-02 20:41:15,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-02 20:41:15,991 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 20:41:15,992 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:41:15,992 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-11-02 20:41:16,016 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2022-11-02 20:41:16,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 117 transitions, 332 flow [2022-11-02 20:41:16,432 INFO L130 PetriNetUnfolder]: 472/3222 cut-off events. [2022-11-02 20:41:16,432 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2022-11-02 20:41:16,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 3222 events. 472/3222 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 23857 event pairs, 201 based on Foata normal form. 0/2798 useless extension candidates. Maximal degree in co-relation 1878. Up to 448 conditions per place. [2022-11-02 20:41:16,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 117 transitions, 332 flow [2022-11-02 20:41:16,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 117 transitions, 332 flow [2022-11-02 20:41:16,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:41:16,448 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@88a72cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:41:16,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-02 20:41:16,450 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2022-11-02 20:41:16,450 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:41:16,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:16,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:16,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-02 20:41:16,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:16,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1720163034, now seen corresponding path program 1 times [2022-11-02 20:41:16,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:16,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757682355] [2022-11-02 20:41:16,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:16,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:16,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:16,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757682355] [2022-11-02 20:41:16,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757682355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:16,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:16,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:41:16,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609816985] [2022-11-02 20:41:16,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:16,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:41:16,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:16,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:41:16,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:41:16,465 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 117 [2022-11-02 20:41:16,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 332 flow. Second operand has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:16,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:16,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 117 [2022-11-02 20:41:16,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:20,891 INFO L130 PetriNetUnfolder]: 8348/34020 cut-off events. [2022-11-02 20:41:20,891 INFO L131 PetriNetUnfolder]: For 18390/37874 co-relation queries the response was YES. [2022-11-02 20:41:21,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50690 conditions, 34020 events. 8348/34020 cut-off events. For 18390/37874 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 438080 event pairs, 7375 based on Foata normal form. 1909/31368 useless extension candidates. Maximal degree in co-relation 31373. Up to 10656 conditions per place. [2022-11-02 20:41:21,145 INFO L137 encePairwiseOnDemand]: 106/117 looper letters, 22 selfloop transitions, 0 changer transitions 0/105 dead transitions. [2022-11-02 20:41:21,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 105 transitions, 352 flow [2022-11-02 20:41:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:41:21,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:41:21,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 199 transitions. [2022-11-02 20:41:21,146 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8504273504273504 [2022-11-02 20:41:21,146 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 199 transitions. [2022-11-02 20:41:21,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 199 transitions. [2022-11-02 20:41:21,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:21,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 199 transitions. [2022-11-02 20:41:21,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:21,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:21,148 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:21,148 INFO L175 Difference]: Start difference. First operand has 122 places, 117 transitions, 332 flow. Second operand 2 states and 199 transitions. [2022-11-02 20:41:21,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 105 transitions, 352 flow [2022-11-02 20:41:21,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 105 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:41:21,172 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 308 flow [2022-11-02 20:41:21,173 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=308, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2022-11-02 20:41:21,173 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, -8 predicate places. [2022-11-02 20:41:21,174 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 308 flow [2022-11-02 20:41:21,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:21,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:21,174 INFO L208 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] [2022-11-02 20:41:21,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-02 20:41:21,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-02 20:41:21,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:21,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1337588620, now seen corresponding path program 1 times [2022-11-02 20:41:21,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:21,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757908398] [2022-11-02 20:41:21,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:21,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:21,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:21,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757908398] [2022-11-02 20:41:21,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757908398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:21,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:21,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:21,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926530230] [2022-11-02 20:41:21,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:21,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:21,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:21,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:21,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:21,198 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 117 [2022-11-02 20:41:21,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 308 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) [2022-11-02 20:41:21,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:21,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 117 [2022-11-02 20:41:21,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:27,025 INFO L130 PetriNetUnfolder]: 12440/42897 cut-off events. [2022-11-02 20:41:27,025 INFO L131 PetriNetUnfolder]: For 20368/21457 co-relation queries the response was YES. [2022-11-02 20:41:27,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65504 conditions, 42897 events. 12440/42897 cut-off events. For 20368/21457 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 515049 event pairs, 9795 based on Foata normal form. 0/38063 useless extension candidates. Maximal degree in co-relation 65494. Up to 15955 conditions per place. [2022-11-02 20:41:27,348 INFO L137 encePairwiseOnDemand]: 114/117 looper letters, 32 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2022-11-02 20:41:27,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 110 transitions, 386 flow [2022-11-02 20:41:27,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:41:27,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2022-11-02 20:41:27,350 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7492877492877493 [2022-11-02 20:41:27,350 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2022-11-02 20:41:27,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2022-11-02 20:41:27,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:27,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2022-11-02 20:41:27,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:27,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:27,352 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:27,353 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 308 flow. Second operand 3 states and 263 transitions. [2022-11-02 20:41:27,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 110 transitions, 386 flow [2022-11-02 20:41:27,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 110 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:41:27,360 INFO L231 Difference]: Finished difference. Result has 117 places, 106 transitions, 320 flow [2022-11-02 20:41:27,360 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=117, PETRI_TRANSITIONS=106} [2022-11-02 20:41:27,361 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, -5 predicate places. [2022-11-02 20:41:27,361 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 106 transitions, 320 flow [2022-11-02 20:41:27,361 INFO L496 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) [2022-11-02 20:41:27,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:27,361 INFO L208 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] [2022-11-02 20:41:27,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-02 20:41:27,362 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-02 20:41:27,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:27,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1664542467, now seen corresponding path program 1 times [2022-11-02 20:41:27,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:27,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219953573] [2022-11-02 20:41:27,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:27,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:27,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:27,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219953573] [2022-11-02 20:41:27,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219953573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:27,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891314337] [2022-11-02 20:41:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:27,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:27,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:27,412 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:27,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 20:41:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:27,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:41:27,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:41:27,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:27,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891314337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:27,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:41:27,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-02 20:41:27,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391869368] [2022-11-02 20:41:27,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:27,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:27,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:27,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:27,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:41:27,531 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 117 [2022-11-02 20:41:27,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 106 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:27,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:27,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 117 [2022-11-02 20:41:27,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:39,946 INFO L130 PetriNetUnfolder]: 20001/91985 cut-off events. [2022-11-02 20:41:39,946 INFO L131 PetriNetUnfolder]: For 34625/43329 co-relation queries the response was YES. [2022-11-02 20:41:40,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128940 conditions, 91985 events. 20001/91985 cut-off events. For 34625/43329 co-relation queries the response was YES. Maximal size of possible extension queue 1829. Compared 1392771 event pairs, 9630 based on Foata normal form. 28/82820 useless extension candidates. Maximal degree in co-relation 128928. Up to 19640 conditions per place. [2022-11-02 20:41:40,771 INFO L137 encePairwiseOnDemand]: 107/117 looper letters, 31 selfloop transitions, 9 changer transitions 0/121 dead transitions. [2022-11-02 20:41:40,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 451 flow [2022-11-02 20:41:40,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:40,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:41:40,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2022-11-02 20:41:40,773 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8005698005698005 [2022-11-02 20:41:40,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2022-11-02 20:41:40,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2022-11-02 20:41:40,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:40,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2022-11-02 20:41:40,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:40,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:40,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:40,775 INFO L175 Difference]: Start difference. First operand has 117 places, 106 transitions, 320 flow. Second operand 3 states and 281 transitions. [2022-11-02 20:41:40,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 451 flow [2022-11-02 20:41:40,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:41:40,806 INFO L231 Difference]: Finished difference. Result has 120 places, 114 transitions, 388 flow [2022-11-02 20:41:40,806 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=120, PETRI_TRANSITIONS=114} [2022-11-02 20:41:40,807 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, -2 predicate places. [2022-11-02 20:41:40,807 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 114 transitions, 388 flow [2022-11-02 20:41:40,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:40,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:40,808 INFO L208 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] [2022-11-02 20:41:40,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:41,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:41,012 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-02 20:41:41,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:41,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1310076984, now seen corresponding path program 1 times [2022-11-02 20:41:41,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:41,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413453095] [2022-11-02 20:41:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:41,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:41,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:41,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413453095] [2022-11-02 20:41:41,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413453095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:41,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213286594] [2022-11-02 20:41:41,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:41,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:41,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:41,064 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:41,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cf52ce-3a22-44ce-8fae-439c9026556d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 20:41:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:41,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:41:41,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:41,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:41,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213286594] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:41,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:41:41,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:41:41,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278758110] [2022-11-02 20:41:41,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:41,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:41:41,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:41,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:41:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:41:41,238 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 117 [2022-11-02 20:41:41,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 114 transitions, 388 flow. Second operand has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:41,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:41,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 117 [2022-11-02 20:41:41,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand