./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/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_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/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_9c8e953a-1d38-4975-87ad-062b02438fe3/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 2f66f1b2f8bc96c1cbd24e122a1b904932cb7f0e98e43f950b8a0288b2af2871 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:46:43,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:46:43,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:46:43,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:46:43,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:46:43,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:46:43,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:46:43,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:46:43,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:46:43,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:46:43,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:46:43,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:46:43,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:46:43,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:46:43,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:46:43,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:46:43,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:46:43,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:46:43,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:46:43,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:46:43,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:46:43,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:46:43,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:46:43,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:46:43,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:46:43,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:46:43,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:46:43,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:46:43,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:46:43,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:46:43,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:46:43,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:46:43,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:46:43,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:46:43,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:46:43,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:46:43,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:46:43,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:46:43,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:46:43,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:46:43,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:46:43,915 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 10:46:43,952 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:46:43,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:46:43,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:46:43,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:46:43,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:46:43,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:46:43,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:46:43,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:46:43,956 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:46:43,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:46:43,957 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:46:43,957 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:46:43,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:46:43,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:46:43,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:46:43,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:46:43,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:46:43,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:46:43,959 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 10:46:43,959 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:46:43,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:46:43,959 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:46:43,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:46:43,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:46:43,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:46:43,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:46:43,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:46:43,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:46:43,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:46:43,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:46:43,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:46:43,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:46:43,962 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:46:43,962 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:46:43,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:46:43,963 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_9c8e953a-1d38-4975-87ad-062b02438fe3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f66f1b2f8bc96c1cbd24e122a1b904932cb7f0e98e43f950b8a0288b2af2871 [2022-11-20 10:46:44,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:46:44,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:46:44,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:46:44,287 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:46:44,288 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:46:44,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i [2022-11-20 10:46:47,233 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:46:47,609 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:46:47,614 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i [2022-11-20 10:46:47,633 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/data/066015dcd/b339f5ac4c7c42e59dbe9c832c636672/FLAG34cc0bab1 [2022-11-20 10:46:47,653 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/data/066015dcd/b339f5ac4c7c42e59dbe9c832c636672 [2022-11-20 10:46:47,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:46:47,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:46:47,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:46:47,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:46:47,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:46:47,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:46:47" (1/1) ... [2022-11-20 10:46:47,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d9da785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:47, skipping insertion in model container [2022-11-20 10:46:47,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:46:47" (1/1) ... [2022-11-20 10:46:47,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:46:47,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:46:48,153 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_9c8e953a-1d38-4975-87ad-062b02438fe3/sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i[30195,30208] [2022-11-20 10:46:48,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:46:48,180 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:46:48,236 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_9c8e953a-1d38-4975-87ad-062b02438fe3/sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i[30195,30208] [2022-11-20 10:46:48,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:46:48,297 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:46:48,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:48 WrapperNode [2022-11-20 10:46:48,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:46:48,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:46:48,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:46:48,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:46:48,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:48" (1/1) ... [2022-11-20 10:46:48,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:48" (1/1) ... [2022-11-20 10:46:48,379 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 137 [2022-11-20 10:46:48,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:46:48,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:46:48,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:46:48,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:46:48,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:48" (1/1) ... [2022-11-20 10:46:48,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:48" (1/1) ... [2022-11-20 10:46:48,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:48" (1/1) ... [2022-11-20 10:46:48,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:48" (1/1) ... [2022-11-20 10:46:48,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:48" (1/1) ... [2022-11-20 10:46:48,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:48" (1/1) ... [2022-11-20 10:46:48,415 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:48" (1/1) ... [2022-11-20 10:46:48,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:48" (1/1) ... [2022-11-20 10:46:48,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:46:48,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:46:48,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:46:48,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:46:48,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:48" (1/1) ... [2022-11-20 10:46:48,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:46:48,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:48,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:48,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:46:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:46:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-20 10:46:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-20 10:46:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:46:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:46:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:46:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:46:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:46:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-20 10:46:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-20 10:46:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:46:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:46:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:46:48,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:46:48,505 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:46:48,659 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:46:48,661 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:46:49,089 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:46:49,135 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:46:49,137 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 10:46:49,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:46:49 BoogieIcfgContainer [2022-11-20 10:46:49,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:46:49,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:46:49,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:46:49,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:46:49,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:46:47" (1/3) ... [2022-11-20 10:46:49,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d537ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:46:49, skipping insertion in model container [2022-11-20 10:46:49,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:48" (2/3) ... [2022-11-20 10:46:49,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d537ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:46:49, skipping insertion in model container [2022-11-20 10:46:49,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:46:49" (3/3) ... [2022-11-20 10:46:49,151 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-20.i [2022-11-20 10:46:49,160 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:46:49,170 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:46:49,170 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-20 10:46:49,170 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:46:49,284 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 10:46:49,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 209 transitions, 440 flow [2022-11-20 10:46:49,570 INFO L130 PetriNetUnfolder]: 30/519 cut-off events. [2022-11-20 10:46:49,571 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 10:46:49,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 519 events. 30/519 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2097 event pairs, 0 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 246. Up to 8 conditions per place. [2022-11-20 10:46:49,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 209 transitions, 440 flow [2022-11-20 10:46:49,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 209 transitions, 440 flow [2022-11-20 10:46:49,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:46:49,610 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;@50f2f047, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:46:49,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-20 10:46:49,616 INFO L130 PetriNetUnfolder]: 0/24 cut-off events. [2022-11-20 10:46:49,616 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:46:49,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:46:49,619 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 10:46:49,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-20 10:46:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1256747734, now seen corresponding path program 1 times [2022-11-20 10:46:49,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:49,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512543646] [2022-11-20 10:46:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:49,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:49,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:49,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512543646] [2022-11-20 10:46:49,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512543646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:49,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:49,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:46:49,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244767711] [2022-11-20 10:46:49,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:49,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:46:49,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:49,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:46:49,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:46:49,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 209 [2022-11-20 10:46:49,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 209 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:49,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:46:49,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 209 [2022-11-20 10:46:49,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:46:50,277 INFO L130 PetriNetUnfolder]: 192/1100 cut-off events. [2022-11-20 10:46:50,277 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-11-20 10:46:50,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 1100 events. 192/1100 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 6050 event pairs, 168 based on Foata normal form. 126/1044 useless extension candidates. Maximal degree in co-relation 1271. Up to 521 conditions per place. [2022-11-20 10:46:50,289 INFO L137 encePairwiseOnDemand]: 199/209 looper letters, 68 selfloop transitions, 2 changer transitions 0/196 dead transitions. [2022-11-20 10:46:50,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 196 transitions, 554 flow [2022-11-20 10:46:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:46:50,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:46:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2022-11-20 10:46:50,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7416267942583732 [2022-11-20 10:46:50,304 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2022-11-20 10:46:50,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2022-11-20 10:46:50,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:46:50,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2022-11-20 10:46:50,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:50,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:50,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:50,320 INFO L175 Difference]: Start difference. First operand has 202 places, 209 transitions, 440 flow. Second operand 3 states and 465 transitions. [2022-11-20 10:46:50,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 196 transitions, 554 flow [2022-11-20 10:46:50,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 196 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:46:50,329 INFO L231 Difference]: Finished difference. Result has 196 places, 196 transitions, 418 flow [2022-11-20 10:46:50,331 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=196, PETRI_TRANSITIONS=196} [2022-11-20 10:46:50,334 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, -6 predicate places. [2022-11-20 10:46:50,335 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 196 transitions, 418 flow [2022-11-20 10:46:50,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:50,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:46:50,336 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] [2022-11-20 10:46:50,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:46:50,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-20 10:46:50,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:50,337 INFO L85 PathProgramCache]: Analyzing trace with hash 542244653, now seen corresponding path program 1 times [2022-11-20 10:46:50,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:50,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626520925] [2022-11-20 10:46:50,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:50,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:50,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:50,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626520925] [2022-11-20 10:46:50,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626520925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:50,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:50,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:46:50,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069869181] [2022-11-20 10:46:50,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:50,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:46:50,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:50,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:46:50,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:46:50,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 209 [2022-11-20 10:46:50,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 196 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:50,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:46:50,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 209 [2022-11-20 10:46:50,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:46:50,711 INFO L130 PetriNetUnfolder]: 156/991 cut-off events. [2022-11-20 10:46:50,712 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-20 10:46:50,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 991 events. 156/991 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5305 event pairs, 78 based on Foata normal form. 0/882 useless extension candidates. Maximal degree in co-relation 1402. Up to 243 conditions per place. [2022-11-20 10:46:50,719 INFO L137 encePairwiseOnDemand]: 186/209 looper letters, 46 selfloop transitions, 11 changer transitions 0/186 dead transitions. [2022-11-20 10:46:50,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 186 transitions, 512 flow [2022-11-20 10:46:50,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:46:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:46:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2022-11-20 10:46:50,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7416267942583732 [2022-11-20 10:46:50,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2022-11-20 10:46:50,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2022-11-20 10:46:50,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:46:50,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2022-11-20 10:46:50,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:50,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:50,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:50,727 INFO L175 Difference]: Start difference. First operand has 196 places, 196 transitions, 418 flow. Second operand 3 states and 465 transitions. [2022-11-20 10:46:50,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 186 transitions, 512 flow [2022-11-20 10:46:50,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 186 transitions, 508 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:46:50,739 INFO L231 Difference]: Finished difference. Result has 184 places, 184 transitions, 412 flow [2022-11-20 10:46:50,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=184, PETRI_TRANSITIONS=184} [2022-11-20 10:46:50,740 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, -18 predicate places. [2022-11-20 10:46:50,740 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 184 transitions, 412 flow [2022-11-20 10:46:50,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:50,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:46:50,741 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, 1, 1, 1, 1, 1, 1] [2022-11-20 10:46:50,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:46:50,742 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-20 10:46:50,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:50,742 INFO L85 PathProgramCache]: Analyzing trace with hash -244278961, now seen corresponding path program 1 times [2022-11-20 10:46:50,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:50,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220172397] [2022-11-20 10:46:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:50,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:50,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:50,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220172397] [2022-11-20 10:46:50,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220172397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:50,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:50,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:46:50,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518773973] [2022-11-20 10:46:50,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:50,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:46:50,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:50,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:46:50,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:46:50,883 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 209 [2022-11-20 10:46:50,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 184 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:50,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:46:50,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 209 [2022-11-20 10:46:50,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:46:51,154 INFO L130 PetriNetUnfolder]: 99/692 cut-off events. [2022-11-20 10:46:51,155 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 10:46:51,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 692 events. 99/692 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2486 event pairs, 52 based on Foata normal form. 0/620 useless extension candidates. Maximal degree in co-relation 804. Up to 160 conditions per place. [2022-11-20 10:46:51,160 INFO L137 encePairwiseOnDemand]: 197/209 looper letters, 61 selfloop transitions, 8 changer transitions 9/210 dead transitions. [2022-11-20 10:46:51,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 210 transitions, 612 flow [2022-11-20 10:46:51,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:46:51,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:46:51,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 540 transitions. [2022-11-20 10:46:51,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.861244019138756 [2022-11-20 10:46:51,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 540 transitions. [2022-11-20 10:46:51,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 540 transitions. [2022-11-20 10:46:51,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:46:51,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 540 transitions. [2022-11-20 10:46:51,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:51,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:51,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:51,170 INFO L175 Difference]: Start difference. First operand has 184 places, 184 transitions, 412 flow. Second operand 3 states and 540 transitions. [2022-11-20 10:46:51,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 210 transitions, 612 flow [2022-11-20 10:46:51,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 210 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:46:51,177 INFO L231 Difference]: Finished difference. Result has 185 places, 177 transitions, 408 flow [2022-11-20 10:46:51,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=185, PETRI_TRANSITIONS=177} [2022-11-20 10:46:51,179 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, -17 predicate places. [2022-11-20 10:46:51,180 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 177 transitions, 408 flow [2022-11-20 10:46:51,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:51,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:46:51,181 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:46:51,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:46:51,182 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-20 10:46:51,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:51,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1964509480, now seen corresponding path program 1 times [2022-11-20 10:46:51,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:51,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561216410] [2022-11-20 10:46:51,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:51,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:51,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:51,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561216410] [2022-11-20 10:46:51,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561216410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:51,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:51,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:46:51,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597682969] [2022-11-20 10:46:51,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:51,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:46:51,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:51,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:46:51,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:46:51,270 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 209 [2022-11-20 10:46:51,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 177 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:51,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:46:51,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 209 [2022-11-20 10:46:51,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:46:51,494 INFO L130 PetriNetUnfolder]: 113/699 cut-off events. [2022-11-20 10:46:51,495 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-11-20 10:46:51,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 699 events. 113/699 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2496 event pairs, 99 based on Foata normal form. 0/644 useless extension candidates. Maximal degree in co-relation 854. Up to 302 conditions per place. [2022-11-20 10:46:51,500 INFO L137 encePairwiseOnDemand]: 206/209 looper letters, 57 selfloop transitions, 2 changer transitions 0/178 dead transitions. [2022-11-20 10:46:51,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 178 transitions, 528 flow [2022-11-20 10:46:51,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:46:51,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:46:51,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2022-11-20 10:46:51,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7129186602870813 [2022-11-20 10:46:51,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2022-11-20 10:46:51,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2022-11-20 10:46:51,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:46:51,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2022-11-20 10:46:51,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:51,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:51,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:51,511 INFO L175 Difference]: Start difference. First operand has 185 places, 177 transitions, 408 flow. Second operand 3 states and 447 transitions. [2022-11-20 10:46:51,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 178 transitions, 528 flow [2022-11-20 10:46:51,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 178 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:46:51,519 INFO L231 Difference]: Finished difference. Result has 177 places, 176 transitions, 402 flow [2022-11-20 10:46:51,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=177, PETRI_TRANSITIONS=176} [2022-11-20 10:46:51,526 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, -25 predicate places. [2022-11-20 10:46:51,526 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 176 transitions, 402 flow [2022-11-20 10:46:51,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:51,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:46:51,527 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:46:51,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:46:51,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-20 10:46:51,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:51,528 INFO L85 PathProgramCache]: Analyzing trace with hash -90039509, now seen corresponding path program 1 times [2022-11-20 10:46:51,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:51,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729392340] [2022-11-20 10:46:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:51,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:51,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:51,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729392340] [2022-11-20 10:46:51,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729392340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:46:51,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974994098] [2022-11-20 10:46:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:51,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:51,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:51,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:46:51,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:46:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:51,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:46:51,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:46:51,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:46:51,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974994098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:51,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:46:51,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-20 10:46:51,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153974732] [2022-11-20 10:46:51,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:51,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:46:51,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:51,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:46:51,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:46:51,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 209 [2022-11-20 10:46:51,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 176 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:51,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:46:51,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 209 [2022-11-20 10:46:51,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:46:52,060 INFO L130 PetriNetUnfolder]: 111/694 cut-off events. [2022-11-20 10:46:52,060 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-20 10:46:52,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1069 conditions, 694 events. 111/694 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2464 event pairs, 97 based on Foata normal form. 0/642 useless extension candidates. Maximal degree in co-relation 841. Up to 297 conditions per place. [2022-11-20 10:46:52,066 INFO L137 encePairwiseOnDemand]: 206/209 looper letters, 56 selfloop transitions, 2 changer transitions 0/177 dead transitions. [2022-11-20 10:46:52,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 177 transitions, 520 flow [2022-11-20 10:46:52,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:46:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:46:52,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2022-11-20 10:46:52,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7113237639553429 [2022-11-20 10:46:52,068 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2022-11-20 10:46:52,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2022-11-20 10:46:52,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:46:52,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2022-11-20 10:46:52,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:52,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:52,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:52,072 INFO L175 Difference]: Start difference. First operand has 177 places, 176 transitions, 402 flow. Second operand 3 states and 446 transitions. [2022-11-20 10:46:52,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 177 transitions, 520 flow [2022-11-20 10:46:52,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 177 transitions, 516 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:46:52,077 INFO L231 Difference]: Finished difference. Result has 176 places, 175 transitions, 400 flow [2022-11-20 10:46:52,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=176, PETRI_TRANSITIONS=175} [2022-11-20 10:46:52,080 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, -26 predicate places. [2022-11-20 10:46:52,080 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 175 transitions, 400 flow [2022-11-20 10:46:52,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:52,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:46:52,081 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:46:52,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:52,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:52,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-20 10:46:52,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:52,287 INFO L85 PathProgramCache]: Analyzing trace with hash -182646682, now seen corresponding path program 1 times [2022-11-20 10:46:52,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:52,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571514000] [2022-11-20 10:46:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:52,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:52,325 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:46:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:52,370 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:46:52,370 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:46:52,371 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-11-20 10:46:52,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-11-20 10:46:52,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-11-20 10:46:52,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-11-20 10:46:52,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-11-20 10:46:52,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-11-20 10:46:52,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-11-20 10:46:52,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-11-20 10:46:52,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-11-20 10:46:52,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-11-20 10:46:52,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-11-20 10:46:52,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-11-20 10:46:52,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-11-20 10:46:52,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-11-20 10:46:52,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-11-20 10:46:52,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2022-11-20 10:46:52,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-11-20 10:46:52,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-11-20 10:46:52,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2022-11-20 10:46:52,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-11-20 10:46:52,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-11-20 10:46:52,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-11-20 10:46:52,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-11-20 10:46:52,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-11-20 10:46:52,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-11-20 10:46:52,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-11-20 10:46:52,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-11-20 10:46:52,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-11-20 10:46:52,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-11-20 10:46:52,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 36 remaining) [2022-11-20 10:46:52,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-11-20 10:46:52,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-11-20 10:46:52,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-11-20 10:46:52,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-11-20 10:46:52,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-11-20 10:46:52,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-11-20 10:46:52,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:46:52,390 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-20 10:46:52,393 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:46:52,393 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 10:46:52,444 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-20 10:46:52,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 258 transitions, 564 flow [2022-11-20 10:46:52,732 INFO L130 PetriNetUnfolder]: 125/1733 cut-off events. [2022-11-20 10:46:52,732 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-20 10:46:52,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 1733 events. 125/1733 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 10243 event pairs, 2 based on Foata normal form. 0/1368 useless extension candidates. Maximal degree in co-relation 976. Up to 32 conditions per place. [2022-11-20 10:46:52,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 258 transitions, 564 flow [2022-11-20 10:46:52,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 258 transitions, 564 flow [2022-11-20 10:46:52,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:46:52,785 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;@50f2f047, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:46:52,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-20 10:46:52,791 INFO L130 PetriNetUnfolder]: 0/24 cut-off events. [2022-11-20 10:46:52,791 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:46:52,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:46:52,791 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 10:46:52,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 10:46:52,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:52,792 INFO L85 PathProgramCache]: Analyzing trace with hash -769199146, now seen corresponding path program 1 times [2022-11-20 10:46:52,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:52,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43739394] [2022-11-20 10:46:52,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:52,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:52,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:52,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43739394] [2022-11-20 10:46:52,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43739394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:52,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:52,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:46:52,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600250407] [2022-11-20 10:46:52,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:52,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:46:52,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:52,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:46:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:46:52,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 258 [2022-11-20 10:46:52,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 258 transitions, 564 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:52,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:46:52,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 258 [2022-11-20 10:46:52,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:46:55,100 INFO L130 PetriNetUnfolder]: 2687/8480 cut-off events. [2022-11-20 10:46:55,101 INFO L131 PetriNetUnfolder]: For 648/684 co-relation queries the response was YES. [2022-11-20 10:46:55,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13827 conditions, 8480 events. 2687/8480 cut-off events. For 648/684 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 67449 event pairs, 2481 based on Foata normal form. 2138/9446 useless extension candidates. Maximal degree in co-relation 7264. Up to 5052 conditions per place. [2022-11-20 10:46:55,298 INFO L137 encePairwiseOnDemand]: 245/258 looper letters, 76 selfloop transitions, 2 changer transitions 0/237 dead transitions. [2022-11-20 10:46:55,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 237 transitions, 678 flow [2022-11-20 10:46:55,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:46:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:46:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2022-11-20 10:46:55,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7545219638242894 [2022-11-20 10:46:55,301 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2022-11-20 10:46:55,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2022-11-20 10:46:55,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:46:55,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2022-11-20 10:46:55,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:55,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:55,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:55,307 INFO L175 Difference]: Start difference. First operand has 247 places, 258 transitions, 564 flow. Second operand 3 states and 584 transitions. [2022-11-20 10:46:55,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 237 transitions, 678 flow [2022-11-20 10:46:55,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 237 transitions, 678 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:46:55,314 INFO L231 Difference]: Finished difference. Result has 234 places, 237 transitions, 526 flow [2022-11-20 10:46:55,315 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=234, PETRI_TRANSITIONS=237} [2022-11-20 10:46:55,316 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, -13 predicate places. [2022-11-20 10:46:55,319 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 237 transitions, 526 flow [2022-11-20 10:46:55,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:55,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:46:55,321 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] [2022-11-20 10:46:55,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:46:55,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 10:46:55,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1560559827, now seen corresponding path program 1 times [2022-11-20 10:46:55,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:55,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733074075] [2022-11-20 10:46:55,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:55,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:55,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:55,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733074075] [2022-11-20 10:46:55,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733074075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:55,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:55,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:46:55,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120745708] [2022-11-20 10:46:55,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:55,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:46:55,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:55,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:46:55,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:46:55,383 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 258 [2022-11-20 10:46:55,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 237 transitions, 526 flow. Second operand has 3 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 10:46:55,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:46:55,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 258 [2022-11-20 10:46:55,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:46:57,054 INFO L130 PetriNetUnfolder]: 2173/7194 cut-off events. [2022-11-20 10:46:57,055 INFO L131 PetriNetUnfolder]: For 649/685 co-relation queries the response was YES. [2022-11-20 10:46:57,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11495 conditions, 7194 events. 2173/7194 cut-off events. For 649/685 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 55833 event pairs, 1169 based on Foata normal form. 0/6530 useless extension candidates. Maximal degree in co-relation 11458. Up to 2412 conditions per place. [2022-11-20 10:46:57,170 INFO L137 encePairwiseOnDemand]: 235/258 looper letters, 56 selfloop transitions, 11 changer transitions 0/229 dead transitions. [2022-11-20 10:46:57,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 229 transitions, 644 flow [2022-11-20 10:46:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:46:57,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:46:57,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2022-11-20 10:46:57,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7532299741602068 [2022-11-20 10:46:57,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2022-11-20 10:46:57,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2022-11-20 10:46:57,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:46:57,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2022-11-20 10:46:57,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:57,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:57,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:57,179 INFO L175 Difference]: Start difference. First operand has 234 places, 237 transitions, 526 flow. Second operand 3 states and 583 transitions. [2022-11-20 10:46:57,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 229 transitions, 644 flow [2022-11-20 10:46:57,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 229 transitions, 640 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:46:57,187 INFO L231 Difference]: Finished difference. Result has 222 places, 225 transitions, 520 flow [2022-11-20 10:46:57,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=520, PETRI_PLACES=222, PETRI_TRANSITIONS=225} [2022-11-20 10:46:57,188 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, -25 predicate places. [2022-11-20 10:46:57,188 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 225 transitions, 520 flow [2022-11-20 10:46:57,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 10:46:57,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:46:57,189 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] [2022-11-20 10:46:57,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:46:57,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 10:46:57,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:57,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1634638415, now seen corresponding path program 1 times [2022-11-20 10:46:57,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:57,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779286985] [2022-11-20 10:46:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:57,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:57,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:57,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779286985] [2022-11-20 10:46:57,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779286985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:57,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:57,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:46:57,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972355699] [2022-11-20 10:46:57,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:57,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:46:57,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:57,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:46:57,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:46:57,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 258 [2022-11-20 10:46:57,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 225 transitions, 520 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:57,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:46:57,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 258 [2022-11-20 10:46:57,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:46:59,159 INFO L130 PetriNetUnfolder]: 2174/7774 cut-off events. [2022-11-20 10:46:59,161 INFO L131 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2022-11-20 10:46:59,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12708 conditions, 7774 events. 2174/7774 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 61514 event pairs, 994 based on Foata normal form. 0/7098 useless extension candidates. Maximal degree in co-relation 5418. Up to 2249 conditions per place. [2022-11-20 10:46:59,235 INFO L137 encePairwiseOnDemand]: 246/258 looper letters, 85 selfloop transitions, 8 changer transitions 0/265 dead transitions. [2022-11-20 10:46:59,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 265 transitions, 810 flow [2022-11-20 10:46:59,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:46:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:46:59,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2022-11-20 10:46:59,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8656330749354005 [2022-11-20 10:46:59,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2022-11-20 10:46:59,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2022-11-20 10:46:59,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:46:59,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2022-11-20 10:46:59,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:59,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:59,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:59,242 INFO L175 Difference]: Start difference. First operand has 222 places, 225 transitions, 520 flow. Second operand 3 states and 670 transitions. [2022-11-20 10:46:59,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 265 transitions, 810 flow [2022-11-20 10:46:59,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 265 transitions, 788 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:46:59,249 INFO L231 Difference]: Finished difference. Result has 223 places, 229 transitions, 546 flow [2022-11-20 10:46:59,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=223, PETRI_TRANSITIONS=229} [2022-11-20 10:46:59,251 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, -24 predicate places. [2022-11-20 10:46:59,251 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 229 transitions, 546 flow [2022-11-20 10:46:59,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:59,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:46:59,252 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:46:59,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:46:59,252 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 10:46:59,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:59,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1907935581, now seen corresponding path program 1 times [2022-11-20 10:46:59,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:59,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252600865] [2022-11-20 10:46:59,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:59,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:59,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:59,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252600865] [2022-11-20 10:46:59,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252600865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:59,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:59,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:46:59,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719328545] [2022-11-20 10:46:59,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:59,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:46:59,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:59,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:46:59,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:46:59,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 258 [2022-11-20 10:46:59,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 229 transitions, 546 flow. Second operand has 3 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 10:46:59,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:46:59,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 258 [2022-11-20 10:46:59,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:47:00,950 INFO L130 PetriNetUnfolder]: 2124/7722 cut-off events. [2022-11-20 10:47:00,950 INFO L131 PetriNetUnfolder]: For 740/740 co-relation queries the response was YES. [2022-11-20 10:47:00,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12488 conditions, 7722 events. 2124/7722 cut-off events. For 740/740 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 61325 event pairs, 1928 based on Foata normal form. 0/7176 useless extension candidates. Maximal degree in co-relation 5549. Up to 3941 conditions per place. [2022-11-20 10:47:01,017 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 67 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2022-11-20 10:47:01,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 232 transitions, 690 flow [2022-11-20 10:47:01,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:47:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:47:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 565 transitions. [2022-11-20 10:47:01,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7299741602067183 [2022-11-20 10:47:01,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 565 transitions. [2022-11-20 10:47:01,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 565 transitions. [2022-11-20 10:47:01,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:47:01,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 565 transitions. [2022-11-20 10:47:01,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:01,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:01,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:01,024 INFO L175 Difference]: Start difference. First operand has 223 places, 229 transitions, 546 flow. Second operand 3 states and 565 transitions. [2022-11-20 10:47:01,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 232 transitions, 690 flow [2022-11-20 10:47:01,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 232 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:47:01,030 INFO L231 Difference]: Finished difference. Result has 223 places, 228 transitions, 540 flow [2022-11-20 10:47:01,030 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=540, PETRI_PLACES=223, PETRI_TRANSITIONS=228} [2022-11-20 10:47:01,031 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, -24 predicate places. [2022-11-20 10:47:01,031 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 228 transitions, 540 flow [2022-11-20 10:47:01,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 10:47:01,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:47:01,032 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:01,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:47:01,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 10:47:01,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:01,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1454553194, now seen corresponding path program 1 times [2022-11-20 10:47:01,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:01,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465383349] [2022-11-20 10:47:01,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:01,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:01,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:01,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465383349] [2022-11-20 10:47:01,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465383349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:01,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890597408] [2022-11-20 10:47:01,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:01,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:01,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:01,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:01,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:47:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:01,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:47:01,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:47:01,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:01,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890597408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:01,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:47:01,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-20 10:47:01,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268058068] [2022-11-20 10:47:01,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:01,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:47:01,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:01,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:47:01,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:47:01,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 258 [2022-11-20 10:47:01,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 228 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:01,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:47:01,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 258 [2022-11-20 10:47:01,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:47:02,797 INFO L130 PetriNetUnfolder]: 2110/7684 cut-off events. [2022-11-20 10:47:02,798 INFO L131 PetriNetUnfolder]: For 751/751 co-relation queries the response was YES. [2022-11-20 10:47:02,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12349 conditions, 7684 events. 2110/7684 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 61135 event pairs, 1914 based on Foata normal form. 0/7150 useless extension candidates. Maximal degree in co-relation 5461. Up to 3915 conditions per place. [2022-11-20 10:47:02,868 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 66 selfloop transitions, 2 changer transitions 0/231 dead transitions. [2022-11-20 10:47:02,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 231 transitions, 682 flow [2022-11-20 10:47:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:47:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:47:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2022-11-20 10:47:02,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7286821705426356 [2022-11-20 10:47:02,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2022-11-20 10:47:02,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2022-11-20 10:47:02,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:47:02,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2022-11-20 10:47:02,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:02,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:02,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:02,876 INFO L175 Difference]: Start difference. First operand has 223 places, 228 transitions, 540 flow. Second operand 3 states and 564 transitions. [2022-11-20 10:47:02,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 231 transitions, 682 flow [2022-11-20 10:47:02,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 231 transitions, 678 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:47:02,881 INFO L231 Difference]: Finished difference. Result has 222 places, 227 transitions, 538 flow [2022-11-20 10:47:02,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=222, PETRI_TRANSITIONS=227} [2022-11-20 10:47:02,882 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, -25 predicate places. [2022-11-20 10:47:02,882 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 227 transitions, 538 flow [2022-11-20 10:47:02,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:02,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:47:02,883 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:02,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:03,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:03,088 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 10:47:03,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:03,089 INFO L85 PathProgramCache]: Analyzing trace with hash -672561609, now seen corresponding path program 1 times [2022-11-20 10:47:03,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:03,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486613445] [2022-11-20 10:47:03,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:03,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:03,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:03,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486613445] [2022-11-20 10:47:03,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486613445] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:03,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684789229] [2022-11-20 10:47:03,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:03,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:03,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:03,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:03,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:47:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:03,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:47:03,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:47:03,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:03,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684789229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:03,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:47:03,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-20 10:47:03,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416751615] [2022-11-20 10:47:03,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:03,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:47:03,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:03,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:47:03,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:47:03,390 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 258 [2022-11-20 10:47:03,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 227 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:03,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:47:03,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 258 [2022-11-20 10:47:03,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:47:09,243 INFO L130 PetriNetUnfolder]: 6385/38439 cut-off events. [2022-11-20 10:47:09,244 INFO L131 PetriNetUnfolder]: For 10424/87281 co-relation queries the response was YES. [2022-11-20 10:47:09,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51384 conditions, 38439 events. 6385/38439 cut-off events. For 10424/87281 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 541818 event pairs, 1941 based on Foata normal form. 71/32536 useless extension candidates. Maximal degree in co-relation 43905. Up to 4468 conditions per place. [2022-11-20 10:47:09,532 INFO L137 encePairwiseOnDemand]: 244/258 looper letters, 39 selfloop transitions, 10 changer transitions 0/248 dead transitions. [2022-11-20 10:47:09,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 248 transitions, 707 flow [2022-11-20 10:47:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:47:09,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:47:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 701 transitions. [2022-11-20 10:47:09,535 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9056847545219638 [2022-11-20 10:47:09,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 701 transitions. [2022-11-20 10:47:09,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 701 transitions. [2022-11-20 10:47:09,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:47:09,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 701 transitions. [2022-11-20 10:47:09,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:09,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:09,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:09,541 INFO L175 Difference]: Start difference. First operand has 222 places, 227 transitions, 538 flow. Second operand 3 states and 701 transitions. [2022-11-20 10:47:09,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 248 transitions, 707 flow [2022-11-20 10:47:09,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 248 transitions, 703 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:47:09,601 INFO L231 Difference]: Finished difference. Result has 224 places, 237 transitions, 622 flow [2022-11-20 10:47:09,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=224, PETRI_TRANSITIONS=237} [2022-11-20 10:47:09,602 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, -23 predicate places. [2022-11-20 10:47:09,603 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 237 transitions, 622 flow [2022-11-20 10:47:09,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:09,603 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:47:09,604 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:09,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 10:47:09,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:09,809 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 10:47:09,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:09,809 INFO L85 PathProgramCache]: Analyzing trace with hash 787587617, now seen corresponding path program 1 times [2022-11-20 10:47:09,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:09,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271339024] [2022-11-20 10:47:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:09,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:09,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:09,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271339024] [2022-11-20 10:47:09,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271339024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:09,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58443108] [2022-11-20 10:47:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:09,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:09,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:09,908 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:09,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:47:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:10,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:47:10,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:10,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:10,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58443108] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:10,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:47:10,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 10:47:10,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878826231] [2022-11-20 10:47:10,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:10,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:47:10,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:10,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:47:10,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:47:10,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 258 [2022-11-20 10:47:10,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 237 transitions, 622 flow. Second operand has 10 states, 10 states have (on average 191.9) internal successors, (1919), 10 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:10,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:47:10,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 258 [2022-11-20 10:47:10,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:47:10,338 INFO L130 PetriNetUnfolder]: 76/339 cut-off events. [2022-11-20 10:47:10,338 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-11-20 10:47:10,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 339 events. 76/339 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1183 event pairs, 0 based on Foata normal form. 12/343 useless extension candidates. Maximal degree in co-relation 576. Up to 63 conditions per place. [2022-11-20 10:47:10,341 INFO L137 encePairwiseOnDemand]: 253/258 looper letters, 32 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2022-11-20 10:47:10,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 284 flow [2022-11-20 10:47:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:47:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:47:10,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1742 transitions. [2022-11-20 10:47:10,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7502153316106804 [2022-11-20 10:47:10,347 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1742 transitions. [2022-11-20 10:47:10,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1742 transitions. [2022-11-20 10:47:10,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:47:10,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1742 transitions. [2022-11-20 10:47:10,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 193.55555555555554) internal successors, (1742), 9 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:10,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:10,359 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:10,360 INFO L175 Difference]: Start difference. First operand has 224 places, 237 transitions, 622 flow. Second operand 9 states and 1742 transitions. [2022-11-20 10:47:10,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 284 flow [2022-11-20 10:47:10,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-20 10:47:10,363 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 156 flow [2022-11-20 10:47:10,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2022-11-20 10:47:10,364 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, -170 predicate places. [2022-11-20 10:47:10,364 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 156 flow [2022-11-20 10:47:10,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 191.9) internal successors, (1919), 10 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:10,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:47:10,367 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:10,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:10,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8e953a-1d38-4975-87ad-062b02438fe3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 10:47:10,573 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 10:47:10,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:10,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1208464956, now seen corresponding path program 1 times [2022-11-20 10:47:10,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:10,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541591761] [2022-11-20 10:47:10,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:10,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:47:10,615 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:47:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:47:10,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:47:10,646 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:47:10,647 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (41 of 42 remaining) [2022-11-20 10:47:10,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (40 of 42 remaining) [2022-11-20 10:47:10,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (39 of 42 remaining) [2022-11-20 10:47:10,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (38 of 42 remaining) [2022-11-20 10:47:10,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (37 of 42 remaining) [2022-11-20 10:47:10,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (36 of 42 remaining) [2022-11-20 10:47:10,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (35 of 42 remaining) [2022-11-20 10:47:10,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (34 of 42 remaining) [2022-11-20 10:47:10,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (33 of 42 remaining) [2022-11-20 10:47:10,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (32 of 42 remaining) [2022-11-20 10:47:10,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (31 of 42 remaining) [2022-11-20 10:47:10,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (30 of 42 remaining) [2022-11-20 10:47:10,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (29 of 42 remaining) [2022-11-20 10:47:10,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (28 of 42 remaining) [2022-11-20 10:47:10,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (27 of 42 remaining) [2022-11-20 10:47:10,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (26 of 42 remaining) [2022-11-20 10:47:10,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (25 of 42 remaining) [2022-11-20 10:47:10,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (24 of 42 remaining) [2022-11-20 10:47:10,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 42 remaining) [2022-11-20 10:47:10,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (22 of 42 remaining) [2022-11-20 10:47:10,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (21 of 42 remaining) [2022-11-20 10:47:10,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (20 of 42 remaining) [2022-11-20 10:47:10,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (19 of 42 remaining) [2022-11-20 10:47:10,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (18 of 42 remaining) [2022-11-20 10:47:10,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (17 of 42 remaining) [2022-11-20 10:47:10,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (16 of 42 remaining) [2022-11-20 10:47:10,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (15 of 42 remaining) [2022-11-20 10:47:10,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (14 of 42 remaining) [2022-11-20 10:47:10,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (13 of 42 remaining) [2022-11-20 10:47:10,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 42 remaining) [2022-11-20 10:47:10,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (11 of 42 remaining) [2022-11-20 10:47:10,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (10 of 42 remaining) [2022-11-20 10:47:10,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (9 of 42 remaining) [2022-11-20 10:47:10,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (8 of 42 remaining) [2022-11-20 10:47:10,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (7 of 42 remaining) [2022-11-20 10:47:10,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (6 of 42 remaining) [2022-11-20 10:47:10,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (5 of 42 remaining) [2022-11-20 10:47:10,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (4 of 42 remaining) [2022-11-20 10:47:10,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 42 remaining) [2022-11-20 10:47:10,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 42 remaining) [2022-11-20 10:47:10,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 42 remaining) [2022-11-20 10:47:10,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 42 remaining) [2022-11-20 10:47:10,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:47:10,657 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:10,658 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:47:10,658 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 10:47:10,727 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-20 10:47:10,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 307 transitions, 692 flow [2022-11-20 10:47:12,045 INFO L130 PetriNetUnfolder]: 532/5831 cut-off events. [2022-11-20 10:47:12,045 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-20 10:47:12,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6282 conditions, 5831 events. 532/5831 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 46948 event pairs, 64 based on Foata normal form. 0/4642 useless extension candidates. Maximal degree in co-relation 3329. Up to 192 conditions per place. [2022-11-20 10:47:12,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 307 transitions, 692 flow [2022-11-20 10:47:12,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 307 transitions, 692 flow [2022-11-20 10:47:12,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:47:12,156 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;@50f2f047, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:47:12,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2022-11-20 10:47:12,158 INFO L130 PetriNetUnfolder]: 0/24 cut-off events. [2022-11-20 10:47:12,158 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:47:12,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:47:12,159 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 10:47:12,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-20 10:47:12,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:12,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1169659001, now seen corresponding path program 1 times [2022-11-20 10:47:12,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:12,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574945706] [2022-11-20 10:47:12,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:12,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:12,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:12,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574945706] [2022-11-20 10:47:12,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574945706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:12,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:12,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:47:12,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500394412] [2022-11-20 10:47:12,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:12,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:47:12,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:12,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:47:12,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:47:12,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 307 [2022-11-20 10:47:12,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 307 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:12,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:47:12,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 307 [2022-11-20 10:47:12,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:47:27,754 INFO L130 PetriNetUnfolder]: 28496/68226 cut-off events. [2022-11-20 10:47:27,754 INFO L131 PetriNetUnfolder]: For 7787/8159 co-relation queries the response was YES. [2022-11-20 10:47:28,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116352 conditions, 68226 events. 28496/68226 cut-off events. For 7787/8159 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 678250 event pairs, 26638 based on Foata normal form. 24648/85012 useless extension candidates. Maximal degree in co-relation 61268. Up to 45367 conditions per place. [2022-11-20 10:47:28,949 INFO L137 encePairwiseOnDemand]: 291/307 looper letters, 84 selfloop transitions, 2 changer transitions 0/278 dead transitions. [2022-11-20 10:47:28,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 278 transitions, 806 flow [2022-11-20 10:47:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:47:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:47:28,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2022-11-20 10:47:28,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7633007600434311 [2022-11-20 10:47:28,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2022-11-20 10:47:28,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2022-11-20 10:47:28,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:47:28,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2022-11-20 10:47:28,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:28,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:28,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:28,968 INFO L175 Difference]: Start difference. First operand has 292 places, 307 transitions, 692 flow. Second operand 3 states and 703 transitions. [2022-11-20 10:47:28,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 278 transitions, 806 flow [2022-11-20 10:47:28,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 278 transitions, 806 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:47:28,981 INFO L231 Difference]: Finished difference. Result has 272 places, 278 transitions, 638 flow [2022-11-20 10:47:28,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=638, PETRI_PLACES=272, PETRI_TRANSITIONS=278} [2022-11-20 10:47:28,983 INFO L288 CegarLoopForPetriNet]: 292 programPoint places, -20 predicate places. [2022-11-20 10:47:28,983 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 278 transitions, 638 flow [2022-11-20 10:47:28,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:28,984 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:47:28,984 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] [2022-11-20 10:47:28,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:47:28,984 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-20 10:47:28,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:28,985 INFO L85 PathProgramCache]: Analyzing trace with hash -240648979, now seen corresponding path program 1 times [2022-11-20 10:47:28,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:28,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582812879] [2022-11-20 10:47:28,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:28,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:29,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:29,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582812879] [2022-11-20 10:47:29,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582812879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:29,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:29,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:47:29,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624476267] [2022-11-20 10:47:29,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:29,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:47:29,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:29,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:47:29,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:47:29,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 307 [2022-11-20 10:47:29,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 278 transitions, 638 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:29,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:47:29,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 307 [2022-11-20 10:47:29,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand