./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/40_barrier_vf-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/40_barrier_vf-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e4eda3d9731a5d805cffabe3eaaa057ba5ed6235ab584548c3730cf4f9dedf3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:48:59,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:48:59,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:48:59,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:48:59,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:48:59,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:48:59,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:48:59,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:48:59,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:48:59,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:48:59,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:48:59,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:48:59,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:48:59,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:48:59,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:48:59,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:48:59,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:48:59,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:48:59,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:48:59,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:48:59,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:48:59,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:48:59,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:48:59,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:48:59,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:48:59,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:48:59,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:48:59,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:48:59,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:48:59,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:48:59,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:48:59,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:48:59,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:48:59,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:48:59,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:48:59,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:48:59,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:48:59,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:48:59,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:48:59,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:48:59,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:48:59,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 11:48:59,755 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:48:59,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:48:59,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:48:59,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:48:59,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:48:59,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:48:59,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:48:59,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:48:59,759 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:48:59,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:48:59,760 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:48:59,760 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:48:59,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:48:59,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:48:59,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:48:59,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:48:59,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:48:59,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:48:59,762 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 11:48:59,762 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:48:59,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:48:59,762 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:48:59,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:48:59,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:48:59,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:48:59,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:48:59,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:48:59,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:48:59,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:48:59,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:48:59,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:48:59,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:48:59,765 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:48:59,765 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:48:59,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:48:59,766 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_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e4eda3d9731a5d805cffabe3eaaa057ba5ed6235ab584548c3730cf4f9dedf3 [2022-11-20 11:49:00,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:49:00,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:49:00,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:49:00,036 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:49:00,036 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:49:00,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-ext/40_barrier_vf-b.i [2022-11-20 11:49:03,084 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:49:03,396 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:49:03,396 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/sv-benchmarks/c/pthread-ext/40_barrier_vf-b.i [2022-11-20 11:49:03,410 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN/data/1be8cae63/5fe1005b3eec4c1fa052cd8cd91fb3cb/FLAGbe040c7c1 [2022-11-20 11:49:03,424 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN/data/1be8cae63/5fe1005b3eec4c1fa052cd8cd91fb3cb [2022-11-20 11:49:03,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:49:03,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:49:03,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:49:03,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:49:03,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:49:03,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:49:03" (1/1) ... [2022-11-20 11:49:03,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e41e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:03, skipping insertion in model container [2022-11-20 11:49:03,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:49:03" (1/1) ... [2022-11-20 11:49:03,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:49:03,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:49:03,846 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/sv-benchmarks/c/pthread-ext/40_barrier_vf-b.i[30481,30494] [2022-11-20 11:49:03,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:49:03,869 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:49:03,933 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/sv-benchmarks/c/pthread-ext/40_barrier_vf-b.i[30481,30494] [2022-11-20 11:49:03,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:49:04,033 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:49:04,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:04 WrapperNode [2022-11-20 11:49:04,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:49:04,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:49:04,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:49:04,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:49:04,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:04" (1/1) ... [2022-11-20 11:49:04,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:04" (1/1) ... [2022-11-20 11:49:04,119 INFO L138 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 118 [2022-11-20 11:49:04,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:49:04,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:49:04,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:49:04,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:49:04,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:04" (1/1) ... [2022-11-20 11:49:04,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:04" (1/1) ... [2022-11-20 11:49:04,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:04" (1/1) ... [2022-11-20 11:49:04,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:04" (1/1) ... [2022-11-20 11:49:04,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:04" (1/1) ... [2022-11-20 11:49:04,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:04" (1/1) ... [2022-11-20 11:49:04,170 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:04" (1/1) ... [2022-11-20 11:49:04,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:04" (1/1) ... [2022-11-20 11:49:04,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:49:04,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:49:04,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:49:04,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:49:04,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:04" (1/1) ... [2022-11-20 11:49:04,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:49:04,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:49:04,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:49:04,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f015862-8c26-4767-b2f8-ce219cdfdc47/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:49:04,271 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-20 11:49:04,272 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-20 11:49:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:49:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:49:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:49:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:49:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:49:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:49:04,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:49:04,276 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:49:04,463 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:49:04,465 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:49:04,717 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:49:04,862 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:49:04,869 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:49:04,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:49:04 BoogieIcfgContainer [2022-11-20 11:49:04,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:49:04,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:49:04,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:49:04,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:49:04,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:49:03" (1/3) ... [2022-11-20 11:49:04,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f91a685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:49:04, skipping insertion in model container [2022-11-20 11:49:04,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:04" (2/3) ... [2022-11-20 11:49:04,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f91a685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:49:04, skipping insertion in model container [2022-11-20 11:49:04,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:49:04" (3/3) ... [2022-11-20 11:49:04,882 INFO L112 eAbstractionObserver]: Analyzing ICFG 40_barrier_vf-b.i [2022-11-20 11:49:04,893 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:49:04,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:49:04,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-20 11:49:04,905 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:49:05,007 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:49:05,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 97 transitions, 199 flow [2022-11-20 11:49:05,092 INFO L130 PetriNetUnfolder]: 5/108 cut-off events. [2022-11-20 11:49:05,092 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:49:05,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 108 events. 5/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2022-11-20 11:49:05,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 97 transitions, 199 flow [2022-11-20 11:49:05,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 97 transitions, 199 flow [2022-11-20 11:49:05,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:49:05,121 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;@55f842f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:49:05,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-20 11:49:05,132 INFO L130 PetriNetUnfolder]: 2/37 cut-off events. [2022-11-20 11:49:05,132 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:49:05,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:05,133 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:05,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 11:49:05,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:05,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1622768940, now seen corresponding path program 1 times [2022-11-20 11:49:05,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:05,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946511188] [2022-11-20 11:49:05,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:05,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:05,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:05,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946511188] [2022-11-20 11:49:05,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946511188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:05,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:05,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:49:05,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697381046] [2022-11-20 11:49:05,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:05,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:49:05,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:05,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:49:05,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:49:05,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 97 [2022-11-20 11:49:05,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 97 transitions, 199 flow. Second operand has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:05,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:05,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 97 [2022-11-20 11:49:05,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:05,513 INFO L130 PetriNetUnfolder]: 1/80 cut-off events. [2022-11-20 11:49:05,513 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:49:05,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 80 events. 1/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 7/78 useless extension candidates. Maximal degree in co-relation 62. Up to 6 conditions per place. [2022-11-20 11:49:05,515 INFO L137 encePairwiseOnDemand]: 84/97 looper letters, 5 selfloop transitions, 0 changer transitions 0/76 dead transitions. [2022-11-20 11:49:05,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 167 flow [2022-11-20 11:49:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:49:05,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:49:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 174 transitions. [2022-11-20 11:49:05,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8969072164948454 [2022-11-20 11:49:05,551 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 174 transitions. [2022-11-20 11:49:05,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 174 transitions. [2022-11-20 11:49:05,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:05,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 174 transitions. [2022-11-20 11:49:05,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 87.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:05,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:05,567 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:05,569 INFO L175 Difference]: Start difference. First operand has 96 places, 97 transitions, 199 flow. Second operand 2 states and 174 transitions. [2022-11-20 11:49:05,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 167 flow [2022-11-20 11:49:05,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:49:05,575 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 157 flow [2022-11-20 11:49:05,577 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=157, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2022-11-20 11:49:05,581 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, -17 predicate places. [2022-11-20 11:49:05,581 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 157 flow [2022-11-20 11:49:05,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:05,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:05,582 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:05,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:49:05,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 11:49:05,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:05,583 INFO L85 PathProgramCache]: Analyzing trace with hash -407808489, now seen corresponding path program 1 times [2022-11-20 11:49:05,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:05,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947829348] [2022-11-20 11:49:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:05,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:05,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:05,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947829348] [2022-11-20 11:49:05,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947829348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:05,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:05,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:49:05,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321660946] [2022-11-20 11:49:05,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:05,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:49:05,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:05,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:49:05,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:49:05,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 97 [2022-11-20 11:49:05,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:05,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:05,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 97 [2022-11-20 11:49:05,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:05,769 INFO L130 PetriNetUnfolder]: 0/80 cut-off events. [2022-11-20 11:49:05,769 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:49:05,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 80 events. 0/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2022-11-20 11:49:05,770 INFO L137 encePairwiseOnDemand]: 91/97 looper letters, 12 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2022-11-20 11:49:05,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 187 flow [2022-11-20 11:49:05,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:49:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:49:05,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2022-11-20 11:49:05,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7422680412371134 [2022-11-20 11:49:05,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2022-11-20 11:49:05,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2022-11-20 11:49:05,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:05,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2022-11-20 11:49:05,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:05,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:05,778 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:05,778 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 157 flow. Second operand 3 states and 216 transitions. [2022-11-20 11:49:05,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 187 flow [2022-11-20 11:49:05,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 187 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:49:05,781 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 161 flow [2022-11-20 11:49:05,782 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2022-11-20 11:49:05,783 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, -17 predicate places. [2022-11-20 11:49:05,783 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 161 flow [2022-11-20 11:49:05,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:05,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:05,784 INFO L209 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] [2022-11-20 11:49:05,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:49:05,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 11:49:05,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:05,785 INFO L85 PathProgramCache]: Analyzing trace with hash -854173413, now seen corresponding path program 1 times [2022-11-20 11:49:05,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:05,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886783773] [2022-11-20 11:49:05,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:05,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:49:05,806 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:49:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:49:05,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:49:05,854 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:49:05,856 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-11-20 11:49:05,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2022-11-20 11:49:05,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2022-11-20 11:49:05,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2022-11-20 11:49:05,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2022-11-20 11:49:05,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2022-11-20 11:49:05,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2022-11-20 11:49:05,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2022-11-20 11:49:05,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2022-11-20 11:49:05,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2022-11-20 11:49:05,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2022-11-20 11:49:05,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2022-11-20 11:49:05,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2022-11-20 11:49:05,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2022-11-20 11:49:05,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2022-11-20 11:49:05,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2022-11-20 11:49:05,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2022-11-20 11:49:05,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2022-11-20 11:49:05,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2022-11-20 11:49:05,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2022-11-20 11:49:05,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2022-11-20 11:49:05,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2022-11-20 11:49:05,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2022-11-20 11:49:05,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2022-11-20 11:49:05,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2022-11-20 11:49:05,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2022-11-20 11:49:05,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2022-11-20 11:49:05,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2022-11-20 11:49:05,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2022-11-20 11:49:05,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2022-11-20 11:49:05,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2022-11-20 11:49:05,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:49:05,876 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-20 11:49:05,880 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:49:05,880 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 11:49:05,943 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:49:05,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 164 transitions, 340 flow [2022-11-20 11:49:06,008 INFO L130 PetriNetUnfolder]: 9/188 cut-off events. [2022-11-20 11:49:06,008 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:49:06,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 188 events. 9/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 471 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 145. Up to 6 conditions per place. [2022-11-20 11:49:06,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 164 transitions, 340 flow [2022-11-20 11:49:06,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 164 transitions, 340 flow [2022-11-20 11:49:06,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:49:06,016 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;@55f842f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:49:06,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-20 11:49:06,022 INFO L130 PetriNetUnfolder]: 2/37 cut-off events. [2022-11-20 11:49:06,022 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:49:06,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:06,022 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:06,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2022-11-20 11:49:06,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:06,023 INFO L85 PathProgramCache]: Analyzing trace with hash 900439354, now seen corresponding path program 1 times [2022-11-20 11:49:06,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:06,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946310159] [2022-11-20 11:49:06,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:06,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:06,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:06,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946310159] [2022-11-20 11:49:06,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946310159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:06,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:06,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:49:06,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200876208] [2022-11-20 11:49:06,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:06,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:49:06,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:06,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:49:06,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:49:06,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 164 [2022-11-20 11:49:06,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 164 transitions, 340 flow. Second operand has 2 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:06,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:06,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 164 [2022-11-20 11:49:06,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:06,138 INFO L130 PetriNetUnfolder]: 25/358 cut-off events. [2022-11-20 11:49:06,138 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-20 11:49:06,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 358 events. 25/358 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1615 event pairs, 14 based on Foata normal form. 44/342 useless extension candidates. Maximal degree in co-relation 317. Up to 50 conditions per place. [2022-11-20 11:49:06,143 INFO L137 encePairwiseOnDemand]: 140/164 looper letters, 10 selfloop transitions, 0 changer transitions 0/129 dead transitions. [2022-11-20 11:49:06,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 129 transitions, 290 flow [2022-11-20 11:49:06,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:49:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:49:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 290 transitions. [2022-11-20 11:49:06,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8841463414634146 [2022-11-20 11:49:06,146 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 290 transitions. [2022-11-20 11:49:06,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 290 transitions. [2022-11-20 11:49:06,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:06,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 290 transitions. [2022-11-20 11:49:06,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 145.0) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:06,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:06,151 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:06,151 INFO L175 Difference]: Start difference. First operand has 162 places, 164 transitions, 340 flow. Second operand 2 states and 290 transitions. [2022-11-20 11:49:06,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 129 transitions, 290 flow [2022-11-20 11:49:06,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 129 transitions, 288 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-20 11:49:06,154 INFO L231 Difference]: Finished difference. Result has 133 places, 129 transitions, 268 flow [2022-11-20 11:49:06,155 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=268, PETRI_PLACES=133, PETRI_TRANSITIONS=129} [2022-11-20 11:49:06,155 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, -29 predicate places. [2022-11-20 11:49:06,156 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 129 transitions, 268 flow [2022-11-20 11:49:06,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:06,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:06,156 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:06,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:49:06,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2022-11-20 11:49:06,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:06,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2033814461, now seen corresponding path program 1 times [2022-11-20 11:49:06,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:06,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089377925] [2022-11-20 11:49:06,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:06,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:06,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:06,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089377925] [2022-11-20 11:49:06,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089377925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:06,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:06,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:49:06,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474659908] [2022-11-20 11:49:06,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:06,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:49:06,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:06,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:49:06,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:49:06,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 164 [2022-11-20 11:49:06,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 129 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:06,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:06,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 164 [2022-11-20 11:49:06,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:06,551 INFO L130 PetriNetUnfolder]: 339/1784 cut-off events. [2022-11-20 11:49:06,551 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-20 11:49:06,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2559 conditions, 1784 events. 339/1784 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14234 event pairs, 108 based on Foata normal form. 0/1472 useless extension candidates. Maximal degree in co-relation 2554. Up to 370 conditions per place. [2022-11-20 11:49:06,565 INFO L137 encePairwiseOnDemand]: 148/164 looper letters, 51 selfloop transitions, 12 changer transitions 0/158 dead transitions. [2022-11-20 11:49:06,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 158 transitions, 457 flow [2022-11-20 11:49:06,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:49:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:49:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2022-11-20 11:49:06,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7703252032520326 [2022-11-20 11:49:06,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions. [2022-11-20 11:49:06,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions. [2022-11-20 11:49:06,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:06,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions. [2022-11-20 11:49:06,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:06,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:06,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:06,571 INFO L175 Difference]: Start difference. First operand has 133 places, 129 transitions, 268 flow. Second operand 3 states and 379 transitions. [2022-11-20 11:49:06,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 158 transitions, 457 flow [2022-11-20 11:49:06,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 158 transitions, 457 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:49:06,578 INFO L231 Difference]: Finished difference. Result has 137 places, 141 transitions, 372 flow [2022-11-20 11:49:06,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=137, PETRI_TRANSITIONS=141} [2022-11-20 11:49:06,580 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, -25 predicate places. [2022-11-20 11:49:06,580 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 141 transitions, 372 flow [2022-11-20 11:49:06,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:06,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:06,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:06,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:49:06,581 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2022-11-20 11:49:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash -72454669, now seen corresponding path program 1 times [2022-11-20 11:49:06,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:06,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936671679] [2022-11-20 11:49:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:06,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:06,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:06,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936671679] [2022-11-20 11:49:06,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936671679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:06,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:06,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:49:06,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8891898] [2022-11-20 11:49:06,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:06,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:49:06,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:06,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:49:06,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:49:06,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 164 [2022-11-20 11:49:06,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 141 transitions, 372 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:06,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:06,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 164 [2022-11-20 11:49:06,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:07,086 INFO L130 PetriNetUnfolder]: 402/1813 cut-off events. [2022-11-20 11:49:07,086 INFO L131 PetriNetUnfolder]: For 525/561 co-relation queries the response was YES. [2022-11-20 11:49:07,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3198 conditions, 1813 events. 402/1813 cut-off events. For 525/561 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 14381 event pairs, 225 based on Foata normal form. 5/1528 useless extension candidates. Maximal degree in co-relation 3191. Up to 755 conditions per place. [2022-11-20 11:49:07,100 INFO L137 encePairwiseOnDemand]: 156/164 looper letters, 62 selfloop transitions, 10 changer transitions 0/164 dead transitions. [2022-11-20 11:49:07,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 164 transitions, 603 flow [2022-11-20 11:49:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:49:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:49:07,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2022-11-20 11:49:07,102 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7317073170731707 [2022-11-20 11:49:07,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2022-11-20 11:49:07,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2022-11-20 11:49:07,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:07,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2022-11-20 11:49:07,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:07,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:07,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:07,108 INFO L175 Difference]: Start difference. First operand has 137 places, 141 transitions, 372 flow. Second operand 3 states and 360 transitions. [2022-11-20 11:49:07,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 164 transitions, 603 flow [2022-11-20 11:49:07,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 164 transitions, 567 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:49:07,120 INFO L231 Difference]: Finished difference. Result has 139 places, 149 transitions, 434 flow [2022-11-20 11:49:07,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=139, PETRI_TRANSITIONS=149} [2022-11-20 11:49:07,123 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, -23 predicate places. [2022-11-20 11:49:07,124 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 149 transitions, 434 flow [2022-11-20 11:49:07,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:07,124 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:07,125 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:07,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:49:07,125 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2022-11-20 11:49:07,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:07,126 INFO L85 PathProgramCache]: Analyzing trace with hash 532514838, now seen corresponding path program 1 times [2022-11-20 11:49:07,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:07,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845833282] [2022-11-20 11:49:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:07,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:49:07,169 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:49:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:49:07,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:49:07,189 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:49:07,189 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2022-11-20 11:49:07,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 46 remaining) [2022-11-20 11:49:07,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 46 remaining) [2022-11-20 11:49:07,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 46 remaining) [2022-11-20 11:49:07,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 46 remaining) [2022-11-20 11:49:07,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 46 remaining) [2022-11-20 11:49:07,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (39 of 46 remaining) [2022-11-20 11:49:07,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (38 of 46 remaining) [2022-11-20 11:49:07,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (37 of 46 remaining) [2022-11-20 11:49:07,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (36 of 46 remaining) [2022-11-20 11:49:07,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (35 of 46 remaining) [2022-11-20 11:49:07,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 46 remaining) [2022-11-20 11:49:07,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 46 remaining) [2022-11-20 11:49:07,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (32 of 46 remaining) [2022-11-20 11:49:07,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (31 of 46 remaining) [2022-11-20 11:49:07,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (30 of 46 remaining) [2022-11-20 11:49:07,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 46 remaining) [2022-11-20 11:49:07,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 46 remaining) [2022-11-20 11:49:07,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 46 remaining) [2022-11-20 11:49:07,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 46 remaining) [2022-11-20 11:49:07,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 46 remaining) [2022-11-20 11:49:07,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (24 of 46 remaining) [2022-11-20 11:49:07,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 46 remaining) [2022-11-20 11:49:07,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 46 remaining) [2022-11-20 11:49:07,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 46 remaining) [2022-11-20 11:49:07,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 46 remaining) [2022-11-20 11:49:07,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (19 of 46 remaining) [2022-11-20 11:49:07,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (18 of 46 remaining) [2022-11-20 11:49:07,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (17 of 46 remaining) [2022-11-20 11:49:07,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (16 of 46 remaining) [2022-11-20 11:49:07,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (15 of 46 remaining) [2022-11-20 11:49:07,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 46 remaining) [2022-11-20 11:49:07,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 46 remaining) [2022-11-20 11:49:07,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 46 remaining) [2022-11-20 11:49:07,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 46 remaining) [2022-11-20 11:49:07,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 46 remaining) [2022-11-20 11:49:07,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 46 remaining) [2022-11-20 11:49:07,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (8 of 46 remaining) [2022-11-20 11:49:07,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (7 of 46 remaining) [2022-11-20 11:49:07,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 46 remaining) [2022-11-20 11:49:07,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 46 remaining) [2022-11-20 11:49:07,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 46 remaining) [2022-11-20 11:49:07,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (3 of 46 remaining) [2022-11-20 11:49:07,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 46 remaining) [2022-11-20 11:49:07,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 46 remaining) [2022-11-20 11:49:07,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 46 remaining) [2022-11-20 11:49:07,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:49:07,208 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-20 11:49:07,208 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:49:07,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 11:49:07,264 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:49:07,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 231 transitions, 483 flow [2022-11-20 11:49:07,333 INFO L130 PetriNetUnfolder]: 13/268 cut-off events. [2022-11-20 11:49:07,334 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-20 11:49:07,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 268 events. 13/268 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 888 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 211. Up to 8 conditions per place. [2022-11-20 11:49:07,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 231 transitions, 483 flow [2022-11-20 11:49:07,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 231 transitions, 483 flow [2022-11-20 11:49:07,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:49:07,343 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;@55f842f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:49:07,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-20 11:49:07,348 INFO L130 PetriNetUnfolder]: 2/37 cut-off events. [2022-11-20 11:49:07,348 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:49:07,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:07,348 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:07,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-20 11:49:07,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:07,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1806232861, now seen corresponding path program 1 times [2022-11-20 11:49:07,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:07,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006602424] [2022-11-20 11:49:07,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:07,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:07,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:07,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006602424] [2022-11-20 11:49:07,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006602424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:07,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:07,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:49:07,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620405449] [2022-11-20 11:49:07,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:07,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:49:07,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:07,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:49:07,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:49:07,389 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 231 [2022-11-20 11:49:07,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 231 transitions, 483 flow. Second operand has 2 states, 2 states have (on average 179.0) internal successors, (358), 2 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:07,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:07,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 231 [2022-11-20 11:49:07,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:07,708 INFO L130 PetriNetUnfolder]: 250/1685 cut-off events. [2022-11-20 11:49:07,709 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2022-11-20 11:49:07,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2164 conditions, 1685 events. 250/1685 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 13484 event pairs, 161 based on Foata normal form. 273/1660 useless extension candidates. Maximal degree in co-relation 1621. Up to 378 conditions per place. [2022-11-20 11:49:07,727 INFO L137 encePairwiseOnDemand]: 196/231 looper letters, 15 selfloop transitions, 0 changer transitions 0/182 dead transitions. [2022-11-20 11:49:07,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 182 transitions, 415 flow [2022-11-20 11:49:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:49:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:49:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 406 transitions. [2022-11-20 11:49:07,730 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8787878787878788 [2022-11-20 11:49:07,730 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 406 transitions. [2022-11-20 11:49:07,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 406 transitions. [2022-11-20 11:49:07,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:07,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 406 transitions. [2022-11-20 11:49:07,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:07,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:07,733 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:07,734 INFO L175 Difference]: Start difference. First operand has 228 places, 231 transitions, 483 flow. Second operand 2 states and 406 transitions. [2022-11-20 11:49:07,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 182 transitions, 415 flow [2022-11-20 11:49:07,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 182 transitions, 409 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-20 11:49:07,738 INFO L231 Difference]: Finished difference. Result has 187 places, 182 transitions, 379 flow [2022-11-20 11:49:07,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=379, PETRI_PLACES=187, PETRI_TRANSITIONS=182} [2022-11-20 11:49:07,740 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -41 predicate places. [2022-11-20 11:49:07,741 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 182 transitions, 379 flow [2022-11-20 11:49:07,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 179.0) internal successors, (358), 2 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:07,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:07,741 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:07,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:49:07,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-20 11:49:07,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:07,742 INFO L85 PathProgramCache]: Analyzing trace with hash -622962682, now seen corresponding path program 1 times [2022-11-20 11:49:07,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:07,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254517339] [2022-11-20 11:49:07,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:07,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:07,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:07,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254517339] [2022-11-20 11:49:07,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254517339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:07,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:07,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:49:07,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465327743] [2022-11-20 11:49:07,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:07,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:49:07,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:07,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:49:07,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:49:07,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 231 [2022-11-20 11:49:07,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 182 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:07,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:07,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 231 [2022-11-20 11:49:07,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:14,060 INFO L130 PetriNetUnfolder]: 14067/43838 cut-off events. [2022-11-20 11:49:14,061 INFO L131 PetriNetUnfolder]: For 1138/1138 co-relation queries the response was YES. [2022-11-20 11:49:14,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66801 conditions, 43838 events. 14067/43838 cut-off events. For 1138/1138 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 568588 event pairs, 4755 based on Foata normal form. 0/35413 useless extension candidates. Maximal degree in co-relation 66795. Up to 11712 conditions per place. [2022-11-20 11:49:14,421 INFO L137 encePairwiseOnDemand]: 207/231 looper letters, 77 selfloop transitions, 18 changer transitions 0/226 dead transitions. [2022-11-20 11:49:14,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 226 transitions, 667 flow [2022-11-20 11:49:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:49:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:49:14,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2022-11-20 11:49:14,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7604617604617605 [2022-11-20 11:49:14,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2022-11-20 11:49:14,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2022-11-20 11:49:14,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:14,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2022-11-20 11:49:14,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:14,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:14,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:14,429 INFO L175 Difference]: Start difference. First operand has 187 places, 182 transitions, 379 flow. Second operand 3 states and 527 transitions. [2022-11-20 11:49:14,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 226 transitions, 667 flow [2022-11-20 11:49:14,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 226 transitions, 667 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:49:14,434 INFO L231 Difference]: Finished difference. Result has 191 places, 200 transitions, 535 flow [2022-11-20 11:49:14,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=535, PETRI_PLACES=191, PETRI_TRANSITIONS=200} [2022-11-20 11:49:14,437 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -37 predicate places. [2022-11-20 11:49:14,437 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 200 transitions, 535 flow [2022-11-20 11:49:14,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:14,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:14,438 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:14,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:49:14,441 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-20 11:49:14,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:14,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1495359887, now seen corresponding path program 1 times [2022-11-20 11:49:14,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:14,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595876412] [2022-11-20 11:49:14,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:14,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:14,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:14,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595876412] [2022-11-20 11:49:14,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595876412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:14,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:14,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:49:14,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420468336] [2022-11-20 11:49:14,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:14,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:49:14,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:14,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:49:14,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:49:14,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 231 [2022-11-20 11:49:14,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 200 transitions, 535 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:14,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:14,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 231 [2022-11-20 11:49:14,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:19,758 INFO L130 PetriNetUnfolder]: 16978/45743 cut-off events. [2022-11-20 11:49:19,758 INFO L131 PetriNetUnfolder]: For 17016/19917 co-relation queries the response was YES. [2022-11-20 11:49:19,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88481 conditions, 45743 events. 16978/45743 cut-off events. For 17016/19917 co-relation queries the response was YES. Maximal size of possible extension queue 1241. Compared 560225 event pairs, 9545 based on Foata normal form. 76/37963 useless extension candidates. Maximal degree in co-relation 88473. Up to 23568 conditions per place. [2022-11-20 11:49:20,128 INFO L137 encePairwiseOnDemand]: 219/231 looper letters, 100 selfloop transitions, 20 changer transitions 0/248 dead transitions. [2022-11-20 11:49:20,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 248 transitions, 961 flow [2022-11-20 11:49:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:49:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:49:20,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2022-11-20 11:49:20,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.733044733044733 [2022-11-20 11:49:20,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2022-11-20 11:49:20,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2022-11-20 11:49:20,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:20,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2022-11-20 11:49:20,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:20,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:20,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:20,137 INFO L175 Difference]: Start difference. First operand has 191 places, 200 transitions, 535 flow. Second operand 3 states and 508 transitions. [2022-11-20 11:49:20,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 248 transitions, 961 flow [2022-11-20 11:49:20,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 248 transitions, 901 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:49:20,164 INFO L231 Difference]: Finished difference. Result has 193 places, 218 transitions, 685 flow [2022-11-20 11:49:20,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=685, PETRI_PLACES=193, PETRI_TRANSITIONS=218} [2022-11-20 11:49:20,166 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -35 predicate places. [2022-11-20 11:49:20,167 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 218 transitions, 685 flow [2022-11-20 11:49:20,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:20,167 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:20,168 INFO L209 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, 1, 1, 1, 1] [2022-11-20 11:49:20,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:49:20,168 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-20 11:49:20,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:20,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1853129783, now seen corresponding path program 1 times [2022-11-20 11:49:20,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:20,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616590559] [2022-11-20 11:49:20,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:20,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:49:20,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:20,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616590559] [2022-11-20 11:49:20,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616590559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:20,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:20,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:49:20,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385679175] [2022-11-20 11:49:20,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:20,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:49:20,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:20,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:49:20,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:49:20,353 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 231 [2022-11-20 11:49:20,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 218 transitions, 685 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:20,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:20,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 231 [2022-11-20 11:49:20,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:26,153 INFO L130 PetriNetUnfolder]: 18721/52968 cut-off events. [2022-11-20 11:49:26,153 INFO L131 PetriNetUnfolder]: For 21935/25737 co-relation queries the response was YES. [2022-11-20 11:49:26,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103206 conditions, 52968 events. 18721/52968 cut-off events. For 21935/25737 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 679306 event pairs, 10185 based on Foata normal form. 117/43517 useless extension candidates. Maximal degree in co-relation 103197. Up to 26050 conditions per place. [2022-11-20 11:49:26,571 INFO L137 encePairwiseOnDemand]: 219/231 looper letters, 115 selfloop transitions, 28 changer transitions 0/272 dead transitions. [2022-11-20 11:49:26,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 272 transitions, 1208 flow [2022-11-20 11:49:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:49:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:49:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2022-11-20 11:49:26,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7316017316017316 [2022-11-20 11:49:26,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2022-11-20 11:49:26,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2022-11-20 11:49:26,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:26,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2022-11-20 11:49:26,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:26,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:26,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:26,579 INFO L175 Difference]: Start difference. First operand has 193 places, 218 transitions, 685 flow. Second operand 3 states and 507 transitions. [2022-11-20 11:49:26,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 272 transitions, 1208 flow [2022-11-20 11:49:26,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 272 transitions, 1150 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:49:26,648 INFO L231 Difference]: Finished difference. Result has 195 places, 242 transitions, 931 flow [2022-11-20 11:49:26,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=931, PETRI_PLACES=195, PETRI_TRANSITIONS=242} [2022-11-20 11:49:26,650 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -33 predicate places. [2022-11-20 11:49:26,650 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 242 transitions, 931 flow [2022-11-20 11:49:26,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:26,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:26,650 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:26,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:49:26,651 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err9ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-20 11:49:26,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:26,651 INFO L85 PathProgramCache]: Analyzing trace with hash -21387717, now seen corresponding path program 1 times [2022-11-20 11:49:26,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:26,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510568973] [2022-11-20 11:49:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:26,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:26,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:26,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510568973] [2022-11-20 11:49:26,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510568973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:26,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:26,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:49:26,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164025366] [2022-11-20 11:49:26,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:26,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:49:26,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:26,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:49:26,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:49:26,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 231 [2022-11-20 11:49:26,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 242 transitions, 931 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:26,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:26,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 231 [2022-11-20 11:49:26,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:30,478 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([939] L705-2-->L705-3: Formula: (= |v_thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1_5| |v_#race~COND~0_1|) InVars {thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1=|v_thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1_5|} OutVars{thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1=|v_thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1_5|, #race~COND~0=|v_#race~COND~0_1|} AuxVars[] AssignedVars[#race~COND~0][120], [thr1Thread1of3ForFork0InUse, 30#L709-1true, thr1Thread2of3ForFork0InUse, 161#L705-3true, thr1Thread3of3ForFork0InUse, 79#L703-5true, 246#true, 252#true, 158#L717-5true, Black: 234#true, 231#true, Black: 242#(= |thr1Thread1of3ForFork0_Barrier2_#t~nondet6#1| |#race~count~0|), Black: 248#(= |#race~count~0| |thr1Thread2of3ForFork0_Barrier2_#t~nondet6#1|)]) [2022-11-20 11:49:30,478 INFO L383 tUnfolder$Statistics]: this new event has 96 ancestors and is cut-off event [2022-11-20 11:49:30,478 INFO L386 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-11-20 11:49:30,478 INFO L386 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-11-20 11:49:30,478 INFO L386 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-11-20 11:49:30,479 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([936] L708-->L708-2: Formula: (and (= 0 v_~MTX~0_88) (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_7| |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_7|) (not (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_7| 0)) (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_7| (ite (= (mod v_~MTX~0_89 256) 1) 1 0))) InVars {~MTX~0=v_~MTX~0_89} OutVars{thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_7|, #race~MTX~0=|v_#race~MTX~0_123|, ~MTX~0=v_~MTX~0_88, thr1Thread2of3ForFork0___VERIFIER_atomic_release_#t~nondet4#1=|v_thr1Thread2of3ForFork0___VERIFIER_atomic_release_#t~nondet4#1_5|, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_7|} AuxVars[] AssignedVars[~MTX~0, thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1, #race~MTX~0, thr1Thread2of3ForFork0___VERIFIER_atomic_release_#t~nondet4#1, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1][104], [thr1Thread1of3ForFork0InUse, 30#L709-1true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 79#L703-5true, 246#true, 252#true, 158#L717-5true, Black: 234#true, 140#L708-2true, 231#true, Black: 242#(= |thr1Thread1of3ForFork0_Barrier2_#t~nondet6#1| |#race~count~0|), Black: 248#(= |#race~count~0| |thr1Thread2of3ForFork0_Barrier2_#t~nondet6#1|)]) [2022-11-20 11:49:30,479 INFO L383 tUnfolder$Statistics]: this new event has 94 ancestors and is cut-off event [2022-11-20 11:49:30,479 INFO L386 tUnfolder$Statistics]: existing Event has 94 ancestors and is cut-off event [2022-11-20 11:49:30,479 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-20 11:49:30,479 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-20 11:49:34,485 INFO L130 PetriNetUnfolder]: 19586/63532 cut-off events. [2022-11-20 11:49:34,486 INFO L131 PetriNetUnfolder]: For 11287/12390 co-relation queries the response was YES. [2022-11-20 11:49:34,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109993 conditions, 63532 events. 19586/63532 cut-off events. For 11287/12390 co-relation queries the response was YES. Maximal size of possible extension queue 1905. Compared 899019 event pairs, 9692 based on Foata normal form. 74/52643 useless extension candidates. Maximal degree in co-relation 109983. Up to 22844 conditions per place. [2022-11-20 11:49:34,915 INFO L137 encePairwiseOnDemand]: 216/231 looper letters, 68 selfloop transitions, 12 changer transitions 0/280 dead transitions. [2022-11-20 11:49:34,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 280 transitions, 1177 flow [2022-11-20 11:49:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:49:34,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:49:34,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2022-11-20 11:49:34,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7734487734487735 [2022-11-20 11:49:34,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2022-11-20 11:49:34,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2022-11-20 11:49:34,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:34,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2022-11-20 11:49:34,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:34,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:34,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:34,924 INFO L175 Difference]: Start difference. First operand has 195 places, 242 transitions, 931 flow. Second operand 3 states and 536 transitions. [2022-11-20 11:49:34,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 280 transitions, 1177 flow [2022-11-20 11:49:34,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 280 transitions, 1121 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:49:34,956 INFO L231 Difference]: Finished difference. Result has 197 places, 254 transitions, 977 flow [2022-11-20 11:49:34,957 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=977, PETRI_PLACES=197, PETRI_TRANSITIONS=254} [2022-11-20 11:49:34,958 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -31 predicate places. [2022-11-20 11:49:34,958 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 254 transitions, 977 flow [2022-11-20 11:49:34,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:34,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:34,959 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:34,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:49:34,959 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-20 11:49:34,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:34,960 INFO L85 PathProgramCache]: Analyzing trace with hash -664032237, now seen corresponding path program 1 times [2022-11-20 11:49:34,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:34,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963279001] [2022-11-20 11:49:34,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:34,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:35,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:35,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963279001] [2022-11-20 11:49:35,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963279001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:35,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:35,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:49:35,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446327964] [2022-11-20 11:49:35,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:35,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:49:35,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:35,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:49:35,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:49:35,011 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 231 [2022-11-20 11:49:35,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 254 transitions, 977 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:35,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:35,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 231 [2022-11-20 11:49:35,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:39,069 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([939] L705-2-->L705-3: Formula: (= |v_thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1_5| |v_#race~COND~0_1|) InVars {thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1=|v_thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1_5|} OutVars{thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1=|v_thr1Thread2of3ForFork0_Barrier2_#t~nondet7#1_5|, #race~COND~0=|v_#race~COND~0_1|} AuxVars[] AssignedVars[#race~COND~0][118], [Black: 254#(= |#race~COND~0| 0), 30#L709-1true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, 161#L705-3true, thr1Thread3of3ForFork0InUse, 79#L703-5true, 252#true, 158#L717-5true, Black: 234#true, 231#true, Black: 242#(= |thr1Thread1of3ForFork0_Barrier2_#t~nondet6#1| |#race~count~0|), Black: 248#(= |#race~count~0| |thr1Thread2of3ForFork0_Barrier2_#t~nondet6#1|), 258#true]) [2022-11-20 11:49:39,069 INFO L383 tUnfolder$Statistics]: this new event has 96 ancestors and is cut-off event [2022-11-20 11:49:39,069 INFO L386 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-11-20 11:49:39,070 INFO L386 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-11-20 11:49:39,070 INFO L386 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-11-20 11:49:39,070 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([936] L708-->L708-2: Formula: (and (= 0 v_~MTX~0_88) (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_7| |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_7|) (not (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_7| 0)) (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_7| (ite (= (mod v_~MTX~0_89 256) 1) 1 0))) InVars {~MTX~0=v_~MTX~0_89} OutVars{thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_7|, #race~MTX~0=|v_#race~MTX~0_123|, ~MTX~0=v_~MTX~0_88, thr1Thread2of3ForFork0___VERIFIER_atomic_release_#t~nondet4#1=|v_thr1Thread2of3ForFork0___VERIFIER_atomic_release_#t~nondet4#1_5|, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_7|} AuxVars[] AssignedVars[~MTX~0, thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1, #race~MTX~0, thr1Thread2of3ForFork0___VERIFIER_atomic_release_#t~nondet4#1, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1][102], [Black: 254#(= |#race~COND~0| 0), 30#L709-1true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 79#L703-5true, 252#true, 158#L717-5true, Black: 234#true, 140#L708-2true, 231#true, Black: 242#(= |thr1Thread1of3ForFork0_Barrier2_#t~nondet6#1| |#race~count~0|), Black: 248#(= |#race~count~0| |thr1Thread2of3ForFork0_Barrier2_#t~nondet6#1|), 258#true]) [2022-11-20 11:49:39,070 INFO L383 tUnfolder$Statistics]: this new event has 94 ancestors and is cut-off event [2022-11-20 11:49:39,071 INFO L386 tUnfolder$Statistics]: existing Event has 94 ancestors and is cut-off event [2022-11-20 11:49:39,071 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-20 11:49:39,071 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-20 11:49:43,003 INFO L130 PetriNetUnfolder]: 23254/68027 cut-off events. [2022-11-20 11:49:43,003 INFO L131 PetriNetUnfolder]: For 27439/31129 co-relation queries the response was YES. [2022-11-20 11:49:43,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137959 conditions, 68027 events. 23254/68027 cut-off events. For 27439/31129 co-relation queries the response was YES. Maximal size of possible extension queue 2026. Compared 927681 event pairs, 13190 based on Foata normal form. 122/57273 useless extension candidates. Maximal degree in co-relation 137948. Up to 33387 conditions per place. [2022-11-20 11:49:43,508 INFO L137 encePairwiseOnDemand]: 221/231 looper letters, 79 selfloop transitions, 16 changer transitions 0/292 dead transitions. [2022-11-20 11:49:43,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 292 transitions, 1305 flow [2022-11-20 11:49:43,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:49:43,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:49:43,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2022-11-20 11:49:43,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7503607503607503 [2022-11-20 11:49:43,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2022-11-20 11:49:43,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2022-11-20 11:49:43,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:43,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2022-11-20 11:49:43,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:43,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:43,516 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:43,516 INFO L175 Difference]: Start difference. First operand has 197 places, 254 transitions, 977 flow. Second operand 3 states and 520 transitions. [2022-11-20 11:49:43,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 292 transitions, 1305 flow [2022-11-20 11:49:43,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 292 transitions, 1265 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:49:43,666 INFO L231 Difference]: Finished difference. Result has 199 places, 268 transitions, 1099 flow [2022-11-20 11:49:43,666 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1099, PETRI_PLACES=199, PETRI_TRANSITIONS=268} [2022-11-20 11:49:43,666 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -29 predicate places. [2022-11-20 11:49:43,666 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 268 transitions, 1099 flow [2022-11-20 11:49:43,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:43,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:43,667 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:43,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:49:43,667 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-20 11:49:43,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:43,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2100555834, now seen corresponding path program 1 times [2022-11-20 11:49:43,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:43,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639883073] [2022-11-20 11:49:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:43,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:49:43,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:49:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:49:43,716 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:49:43,717 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:49:43,717 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2022-11-20 11:49:43,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (59 of 61 remaining) [2022-11-20 11:49:43,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (58 of 61 remaining) [2022-11-20 11:49:43,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (57 of 61 remaining) [2022-11-20 11:49:43,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (56 of 61 remaining) [2022-11-20 11:49:43,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (55 of 61 remaining) [2022-11-20 11:49:43,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (54 of 61 remaining) [2022-11-20 11:49:43,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (53 of 61 remaining) [2022-11-20 11:49:43,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (52 of 61 remaining) [2022-11-20 11:49:43,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (51 of 61 remaining) [2022-11-20 11:49:43,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (50 of 61 remaining) [2022-11-20 11:49:43,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (49 of 61 remaining) [2022-11-20 11:49:43,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (48 of 61 remaining) [2022-11-20 11:49:43,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (47 of 61 remaining) [2022-11-20 11:49:43,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (46 of 61 remaining) [2022-11-20 11:49:43,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (45 of 61 remaining) [2022-11-20 11:49:43,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 61 remaining) [2022-11-20 11:49:43,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 61 remaining) [2022-11-20 11:49:43,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 61 remaining) [2022-11-20 11:49:43,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 61 remaining) [2022-11-20 11:49:43,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 61 remaining) [2022-11-20 11:49:43,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (39 of 61 remaining) [2022-11-20 11:49:43,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (38 of 61 remaining) [2022-11-20 11:49:43,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (37 of 61 remaining) [2022-11-20 11:49:43,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (36 of 61 remaining) [2022-11-20 11:49:43,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (35 of 61 remaining) [2022-11-20 11:49:43,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 61 remaining) [2022-11-20 11:49:43,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 61 remaining) [2022-11-20 11:49:43,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (32 of 61 remaining) [2022-11-20 11:49:43,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (31 of 61 remaining) [2022-11-20 11:49:43,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (30 of 61 remaining) [2022-11-20 11:49:43,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 61 remaining) [2022-11-20 11:49:43,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 61 remaining) [2022-11-20 11:49:43,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 61 remaining) [2022-11-20 11:49:43,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 61 remaining) [2022-11-20 11:49:43,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 61 remaining) [2022-11-20 11:49:43,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (24 of 61 remaining) [2022-11-20 11:49:43,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 61 remaining) [2022-11-20 11:49:43,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 61 remaining) [2022-11-20 11:49:43,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 61 remaining) [2022-11-20 11:49:43,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 61 remaining) [2022-11-20 11:49:43,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (19 of 61 remaining) [2022-11-20 11:49:43,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (18 of 61 remaining) [2022-11-20 11:49:43,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (17 of 61 remaining) [2022-11-20 11:49:43,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (16 of 61 remaining) [2022-11-20 11:49:43,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (15 of 61 remaining) [2022-11-20 11:49:43,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 61 remaining) [2022-11-20 11:49:43,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 61 remaining) [2022-11-20 11:49:43,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 61 remaining) [2022-11-20 11:49:43,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 61 remaining) [2022-11-20 11:49:43,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 61 remaining) [2022-11-20 11:49:43,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 61 remaining) [2022-11-20 11:49:43,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (8 of 61 remaining) [2022-11-20 11:49:43,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (7 of 61 remaining) [2022-11-20 11:49:43,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 61 remaining) [2022-11-20 11:49:43,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 61 remaining) [2022-11-20 11:49:43,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 61 remaining) [2022-11-20 11:49:43,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (3 of 61 remaining) [2022-11-20 11:49:43,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 61 remaining) [2022-11-20 11:49:43,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 61 remaining) [2022-11-20 11:49:43,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 61 remaining) [2022-11-20 11:49:43,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:49:43,729 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:43,731 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:49:43,731 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-20 11:49:43,781 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:49:43,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 298 transitions, 628 flow [2022-11-20 11:49:43,842 INFO L130 PetriNetUnfolder]: 17/348 cut-off events. [2022-11-20 11:49:43,842 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-20 11:49:43,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 348 events. 17/348 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1323 event pairs, 0 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 277. Up to 10 conditions per place. [2022-11-20 11:49:43,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 298 transitions, 628 flow [2022-11-20 11:49:43,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 298 transitions, 628 flow [2022-11-20 11:49:43,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:49:43,855 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;@55f842f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:49:43,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2022-11-20 11:49:43,857 INFO L130 PetriNetUnfolder]: 2/37 cut-off events. [2022-11-20 11:49:43,857 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:49:43,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:43,858 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:43,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2022-11-20 11:49:43,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:43,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1148787505, now seen corresponding path program 1 times [2022-11-20 11:49:43,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:43,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384574578] [2022-11-20 11:49:43,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:43,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:43,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:43,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384574578] [2022-11-20 11:49:43,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384574578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:43,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:43,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:49:43,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146090887] [2022-11-20 11:49:43,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:43,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:49:43,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:43,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:49:43,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:49:43,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 298 [2022-11-20 11:49:43,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 298 transitions, 628 flow. Second operand has 2 states, 2 states have (on average 229.0) internal successors, (458), 2 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:43,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:43,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 298 [2022-11-20 11:49:43,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:45,419 INFO L130 PetriNetUnfolder]: 1933/8182 cut-off events. [2022-11-20 11:49:45,420 INFO L131 PetriNetUnfolder]: For 1169/1169 co-relation queries the response was YES. [2022-11-20 11:49:45,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11391 conditions, 8182 events. 1933/8182 cut-off events. For 1169/1169 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 87930 event pairs, 1329 based on Foata normal form. 1657/8475 useless extension candidates. Maximal degree in co-relation 8513. Up to 2591 conditions per place. [2022-11-20 11:49:45,511 INFO L137 encePairwiseOnDemand]: 252/298 looper letters, 20 selfloop transitions, 0 changer transitions 0/235 dead transitions. [2022-11-20 11:49:45,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 235 transitions, 542 flow [2022-11-20 11:49:45,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:49:45,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:49:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 522 transitions. [2022-11-20 11:49:45,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8758389261744967 [2022-11-20 11:49:45,514 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 522 transitions. [2022-11-20 11:49:45,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 522 transitions. [2022-11-20 11:49:45,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:45,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 522 transitions. [2022-11-20 11:49:45,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 261.0) internal successors, (522), 2 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:45,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:45,519 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:45,519 INFO L175 Difference]: Start difference. First operand has 294 places, 298 transitions, 628 flow. Second operand 2 states and 522 transitions. [2022-11-20 11:49:45,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 235 transitions, 542 flow [2022-11-20 11:49:45,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 235 transitions, 530 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-20 11:49:45,525 INFO L231 Difference]: Finished difference. Result has 241 places, 235 transitions, 490 flow [2022-11-20 11:49:45,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=490, PETRI_PLACES=241, PETRI_TRANSITIONS=235} [2022-11-20 11:49:45,526 INFO L288 CegarLoopForPetriNet]: 294 programPoint places, -53 predicate places. [2022-11-20 11:49:45,526 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 235 transitions, 490 flow [2022-11-20 11:49:45,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 229.0) internal successors, (458), 2 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:45,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:45,527 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:45,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:49:45,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2022-11-20 11:49:45,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash -178156430, now seen corresponding path program 1 times [2022-11-20 11:49:45,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:45,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279556084] [2022-11-20 11:49:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:45,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:49:45,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:45,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279556084] [2022-11-20 11:49:45,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279556084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:45,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:45,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:49:45,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031651302] [2022-11-20 11:49:45,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:45,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:49:45,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:45,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:49:45,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:49:45,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 298 [2022-11-20 11:49:45,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 235 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:45,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:45,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 298 [2022-11-20 11:49:45,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand