./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/indexer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b 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_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/indexer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro --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 f24afaadf07ead7c7da85cf6020fd6a6a5b5585e439441b5111a2dea2e7cec4c --- 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-8393723 [2022-11-18 18:29:30,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:29:30,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:29:30,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:29:30,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:29:30,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:29:30,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:29:30,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:29:30,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:29:30,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:29:30,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:29:30,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:29:30,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:29:30,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:29:30,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:29:30,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:29:30,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:29:30,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:29:30,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:29:30,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:29:30,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:29:30,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:29:30,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:29:30,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:29:30,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:29:30,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:29:30,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:29:30,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:29:30,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:29:30,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:29:30,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:29:30,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:29:30,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:29:30,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:29:30,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:29:30,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:29:30,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:29:30,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:29:30,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:29:30,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:29:30,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:29:30,568 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 18:29:30,590 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:29:30,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:29:30,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:29:30,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:29:30,592 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:29:30,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:29:30,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:29:30,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:29:30,593 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:29:30,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:29:30,594 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:29:30,594 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:29:30,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:29:30,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:29:30,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:29:30,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:29:30,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:29:30,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:29:30,596 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 18:29:30,596 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:29:30,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:29:30,596 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:29:30,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:29:30,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:29:30,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:29:30,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:29:30,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:29:30,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:29:30,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:29:30,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:29:30,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:29:30,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:29:30,599 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:29:30,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:29:30,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:29:30,599 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_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f24afaadf07ead7c7da85cf6020fd6a6a5b5585e439441b5111a2dea2e7cec4c [2022-11-18 18:29:30,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:29:30,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:29:30,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:29:30,883 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:29:30,884 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:29:30,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/indexer.i [2022-11-18 18:29:30,977 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/data/1268eee13/5369a8e4978b4b7d8220f0d7992140da/FLAGd5ce73960 [2022-11-18 18:29:31,475 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:29:31,476 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/sv-benchmarks/c/pthread/indexer.i [2022-11-18 18:29:31,492 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/data/1268eee13/5369a8e4978b4b7d8220f0d7992140da/FLAGd5ce73960 [2022-11-18 18:29:31,927 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/data/1268eee13/5369a8e4978b4b7d8220f0d7992140da [2022-11-18 18:29:31,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:29:31,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:29:31,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:29:31,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:29:31,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:29:31,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:29:31" (1/1) ... [2022-11-18 18:29:31,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fdfbbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:31, skipping insertion in model container [2022-11-18 18:29:31,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:29:31" (1/1) ... [2022-11-18 18:29:31,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:29:31,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:29:32,530 WARN L234 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_c579650f-a429-4c11-9650-2a9dd15b2efb/sv-benchmarks/c/pthread/indexer.i[47556,47569] [2022-11-18 18:29:32,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:29:32,617 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:29:32,654 WARN L234 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_c579650f-a429-4c11-9650-2a9dd15b2efb/sv-benchmarks/c/pthread/indexer.i[47556,47569] [2022-11-18 18:29:32,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:29:32,715 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:29:32,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:32 WrapperNode [2022-11-18 18:29:32,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:29:32,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:29:32,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:29:32,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:29:32,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:32" (1/1) ... [2022-11-18 18:29:32,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:32" (1/1) ... [2022-11-18 18:29:32,799 INFO L138 Inliner]: procedures = 269, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 143 [2022-11-18 18:29:32,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:29:32,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:29:32,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:29:32,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:29:32,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:32" (1/1) ... [2022-11-18 18:29:32,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:32" (1/1) ... [2022-11-18 18:29:32,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:32" (1/1) ... [2022-11-18 18:29:32,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:32" (1/1) ... [2022-11-18 18:29:32,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:32" (1/1) ... [2022-11-18 18:29:32,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:32" (1/1) ... [2022-11-18 18:29:32,862 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:32" (1/1) ... [2022-11-18 18:29:32,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:32" (1/1) ... [2022-11-18 18:29:32,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:29:32,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:29:32,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:29:32,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:29:32,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:32" (1/1) ... [2022-11-18 18:29:32,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:29:32,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:32,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:29:32,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:29:32,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:29:32,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:29:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:29:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2022-11-18 18:29:32,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2022-11-18 18:29:32,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:29:32,986 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:29:32,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:29:32,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:29:32,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:29:32,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:29:32,989 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:29:33,202 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:29:33,209 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:29:33,527 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:29:33,536 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:29:33,540 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 18:29:33,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:29:33 BoogieIcfgContainer [2022-11-18 18:29:33,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:29:33,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:29:33,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:29:33,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:29:33,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:29:31" (1/3) ... [2022-11-18 18:29:33,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe3ca87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:29:33, skipping insertion in model container [2022-11-18 18:29:33,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:32" (2/3) ... [2022-11-18 18:29:33,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe3ca87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:29:33, skipping insertion in model container [2022-11-18 18:29:33,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:29:33" (3/3) ... [2022-11-18 18:29:33,563 INFO L112 eAbstractionObserver]: Analyzing ICFG indexer.i [2022-11-18 18:29:33,578 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:29:33,589 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:29:33,590 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-18 18:29:33,590 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:29:33,743 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 18:29:33,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 155 transitions, 318 flow [2022-11-18 18:29:33,863 INFO L130 PetriNetUnfolder]: 18/193 cut-off events. [2022-11-18 18:29:33,863 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:29:33,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 193 events. 18/193 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 334 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 116. Up to 4 conditions per place. [2022-11-18 18:29:33,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 155 transitions, 318 flow [2022-11-18 18:29:33,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 155 transitions, 318 flow [2022-11-18 18:29:33,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:29:33,908 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;@11ab6e2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:29:33,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-18 18:29:33,958 INFO L130 PetriNetUnfolder]: 6/60 cut-off events. [2022-11-18 18:29:33,958 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:29:33,958 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:33,959 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:33,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 18:29:33,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:33,966 INFO L85 PathProgramCache]: Analyzing trace with hash -926057980, now seen corresponding path program 1 times [2022-11-18 18:29:33,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:33,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342813770] [2022-11-18 18:29:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:33,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:34,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:34,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342813770] [2022-11-18 18:29:34,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342813770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:34,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:34,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:29:34,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994188687] [2022-11-18 18:29:34,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:34,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:29:34,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:34,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:29:34,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:29:34,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 155 [2022-11-18 18:29:34,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 155 transitions, 318 flow. Second operand has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:34,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:34,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 155 [2022-11-18 18:29:34,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:34,455 INFO L130 PetriNetUnfolder]: 7/181 cut-off events. [2022-11-18 18:29:34,455 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:29:34,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 181 events. 7/181 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 313 event pairs, 0 based on Foata normal form. 10/173 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2022-11-18 18:29:34,459 INFO L137 encePairwiseOnDemand]: 147/155 looper letters, 2 selfloop transitions, 0 changer transitions 0/146 dead transitions. [2022-11-18 18:29:34,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 146 transitions, 304 flow [2022-11-18 18:29:34,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:29:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:29:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 298 transitions. [2022-11-18 18:29:34,475 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9612903225806452 [2022-11-18 18:29:34,476 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 298 transitions. [2022-11-18 18:29:34,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 298 transitions. [2022-11-18 18:29:34,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:34,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 298 transitions. [2022-11-18 18:29:34,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 149.0) internal successors, (298), 2 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:34,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 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) [2022-11-18 18:29:34,491 INFO L81 ComplementDD]: Finished complementDD. Result has 3 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) [2022-11-18 18:29:34,493 INFO L175 Difference]: Start difference. First operand has 144 places, 155 transitions, 318 flow. Second operand 2 states and 298 transitions. [2022-11-18 18:29:34,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 146 transitions, 304 flow [2022-11-18 18:29:34,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 146 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:29:34,502 INFO L231 Difference]: Finished difference. Result has 144 places, 146 transitions, 300 flow [2022-11-18 18:29:34,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=300, PETRI_PLACES=144, PETRI_TRANSITIONS=146} [2022-11-18 18:29:34,508 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 0 predicate places. [2022-11-18 18:29:34,509 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 146 transitions, 300 flow [2022-11-18 18:29:34,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:34,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:34,510 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] [2022-11-18 18:29:34,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:29:34,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 18:29:34,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:34,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1122571485, now seen corresponding path program 1 times [2022-11-18 18:29:34,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:34,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619415768] [2022-11-18 18:29:34,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:34,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:34,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:34,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619415768] [2022-11-18 18:29:34,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619415768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:34,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:34,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:29:34,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282410807] [2022-11-18 18:29:34,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:34,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:29:34,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:34,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:29:34,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:29:34,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 155 [2022-11-18 18:29:34,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 146 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:34,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:34,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 155 [2022-11-18 18:29:34,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:34,835 INFO L130 PetriNetUnfolder]: 5/174 cut-off events. [2022-11-18 18:29:34,836 INFO L131 PetriNetUnfolder]: For 3/18 co-relation queries the response was YES. [2022-11-18 18:29:34,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 174 events. 5/174 cut-off events. For 3/18 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 272 event pairs, 0 based on Foata normal form. 1/160 useless extension candidates. Maximal degree in co-relation 230. Up to 29 conditions per place. [2022-11-18 18:29:34,838 INFO L137 encePairwiseOnDemand]: 143/155 looper letters, 36 selfloop transitions, 6 changer transitions 16/164 dead transitions. [2022-11-18 18:29:34,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 164 transitions, 440 flow [2022-11-18 18:29:34,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:29:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:29:34,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2022-11-18 18:29:34,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.843010752688172 [2022-11-18 18:29:34,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2022-11-18 18:29:34,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2022-11-18 18:29:34,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:34,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2022-11-18 18:29:34,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:34,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:34,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:34,849 INFO L175 Difference]: Start difference. First operand has 144 places, 146 transitions, 300 flow. Second operand 3 states and 392 transitions. [2022-11-18 18:29:34,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 164 transitions, 440 flow [2022-11-18 18:29:34,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 164 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:29:34,853 INFO L231 Difference]: Finished difference. Result has 147 places, 135 transitions, 302 flow [2022-11-18 18:29:34,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=147, PETRI_TRANSITIONS=135} [2022-11-18 18:29:34,855 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 3 predicate places. [2022-11-18 18:29:34,855 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 135 transitions, 302 flow [2022-11-18 18:29:34,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:34,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:34,856 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] [2022-11-18 18:29:34,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:29:34,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 18:29:34,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:34,857 INFO L85 PathProgramCache]: Analyzing trace with hash 963125060, now seen corresponding path program 1 times [2022-11-18 18:29:34,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:34,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048813058] [2022-11-18 18:29:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:34,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:35,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:35,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048813058] [2022-11-18 18:29:35,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048813058] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:35,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303669296] [2022-11-18 18:29:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:35,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:35,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:35,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:35,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:29:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:35,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:29:35,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:35,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:35,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303669296] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:29:35,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:29:35,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 18:29:35,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649265705] [2022-11-18 18:29:35,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:35,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:29:35,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:35,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:29:35,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:29:35,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 155 [2022-11-18 18:29:35,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 135 transitions, 302 flow. Second operand has 10 states, 10 states have (on average 113.4) internal successors, (1134), 10 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:35,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:35,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 155 [2022-11-18 18:29:35,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:35,544 INFO L130 PetriNetUnfolder]: 4/166 cut-off events. [2022-11-18 18:29:35,544 INFO L131 PetriNetUnfolder]: For 7/22 co-relation queries the response was YES. [2022-11-18 18:29:35,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 166 events. 4/166 cut-off events. For 7/22 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 184 event pairs, 0 based on Foata normal form. 4/159 useless extension candidates. Maximal degree in co-relation 234. Up to 20 conditions per place. [2022-11-18 18:29:35,546 INFO L137 encePairwiseOnDemand]: 143/155 looper letters, 35 selfloop transitions, 15 changer transitions 1/156 dead transitions. [2022-11-18 18:29:35,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 156 transitions, 448 flow [2022-11-18 18:29:35,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:29:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:29:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1163 transitions. [2022-11-18 18:29:35,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7503225806451613 [2022-11-18 18:29:35,551 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1163 transitions. [2022-11-18 18:29:35,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1163 transitions. [2022-11-18 18:29:35,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:35,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1163 transitions. [2022-11-18 18:29:35,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.3) internal successors, (1163), 10 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:35,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 155.0) internal successors, (1705), 11 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:35,562 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 155.0) internal successors, (1705), 11 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:35,562 INFO L175 Difference]: Start difference. First operand has 147 places, 135 transitions, 302 flow. Second operand 10 states and 1163 transitions. [2022-11-18 18:29:35,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 156 transitions, 448 flow [2022-11-18 18:29:35,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 156 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:29:35,567 INFO L231 Difference]: Finished difference. Result has 147 places, 143 transitions, 372 flow [2022-11-18 18:29:35,567 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=372, PETRI_PLACES=147, PETRI_TRANSITIONS=143} [2022-11-18 18:29:35,568 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 3 predicate places. [2022-11-18 18:29:35,568 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 143 transitions, 372 flow [2022-11-18 18:29:35,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.4) internal successors, (1134), 10 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:35,570 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:35,570 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:35,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:35,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:35,780 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 18:29:35,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:35,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1826789028, now seen corresponding path program 2 times [2022-11-18 18:29:35,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:35,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302680872] [2022-11-18 18:29:35,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:35,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:36,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:36,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302680872] [2022-11-18 18:29:36,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302680872] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:36,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692379975] [2022-11-18 18:29:36,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:29:36,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:36,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:36,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:36,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:29:36,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:29:36,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:29:36,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:29:36,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:36,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:29:36,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:36,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:29:36,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:36,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:36,308 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:29:36,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:29:36,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:36,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:36,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:36,364 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:29:36,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:29:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:29:36,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:29:36,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692379975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:36,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:29:36,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2022-11-18 18:29:36,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790195380] [2022-11-18 18:29:36,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:36,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:29:36,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:36,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:29:36,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:29:36,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 155 [2022-11-18 18:29:36,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 143 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:36,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:36,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 155 [2022-11-18 18:29:36,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:37,106 INFO L130 PetriNetUnfolder]: 404/1533 cut-off events. [2022-11-18 18:29:37,106 INFO L131 PetriNetUnfolder]: For 18/23 co-relation queries the response was YES. [2022-11-18 18:29:37,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2359 conditions, 1533 events. 404/1533 cut-off events. For 18/23 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9369 event pairs, 168 based on Foata normal form. 0/1358 useless extension candidates. Maximal degree in co-relation 2351. Up to 622 conditions per place. [2022-11-18 18:29:37,117 INFO L137 encePairwiseOnDemand]: 135/155 looper letters, 59 selfloop transitions, 55 changer transitions 0/220 dead transitions. [2022-11-18 18:29:37,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 220 transitions, 754 flow [2022-11-18 18:29:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:29:37,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:29:37,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 864 transitions. [2022-11-18 18:29:37,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7963133640552995 [2022-11-18 18:29:37,121 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 864 transitions. [2022-11-18 18:29:37,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 864 transitions. [2022-11-18 18:29:37,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:37,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 864 transitions. [2022-11-18 18:29:37,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.42857142857143) internal successors, (864), 7 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:37,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 155.0) internal successors, (1240), 8 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:37,128 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 155.0) internal successors, (1240), 8 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:37,129 INFO L175 Difference]: Start difference. First operand has 147 places, 143 transitions, 372 flow. Second operand 7 states and 864 transitions. [2022-11-18 18:29:37,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 220 transitions, 754 flow [2022-11-18 18:29:37,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 220 transitions, 744 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-18 18:29:37,137 INFO L231 Difference]: Finished difference. Result has 157 places, 196 transitions, 723 flow [2022-11-18 18:29:37,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=723, PETRI_PLACES=157, PETRI_TRANSITIONS=196} [2022-11-18 18:29:37,140 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 13 predicate places. [2022-11-18 18:29:37,140 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 196 transitions, 723 flow [2022-11-18 18:29:37,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:37,141 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:37,141 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:37,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:37,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:37,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_routineErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 18:29:37,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:37,347 INFO L85 PathProgramCache]: Analyzing trace with hash -247628687, now seen corresponding path program 1 times [2022-11-18 18:29:37,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:37,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211122839] [2022-11-18 18:29:37,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:37,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:37,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:37,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211122839] [2022-11-18 18:29:37,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211122839] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:37,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890705166] [2022-11-18 18:29:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:37,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:37,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:37,574 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:37,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:29:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:37,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:29:37,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:37,753 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:37,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:37,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890705166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:29:37,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:29:37,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 18:29:37,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573612489] [2022-11-18 18:29:37,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:37,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:29:37,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:37,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:29:37,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:29:37,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 155 [2022-11-18 18:29:37,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 196 transitions, 723 flow. Second operand has 18 states, 18 states have (on average 113.55555555555556) internal successors, (2044), 18 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:37,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:37,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 155 [2022-11-18 18:29:37,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:38,351 INFO L130 PetriNetUnfolder]: 121/720 cut-off events. [2022-11-18 18:29:38,351 INFO L131 PetriNetUnfolder]: For 97/121 co-relation queries the response was YES. [2022-11-18 18:29:38,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1273 conditions, 720 events. 121/720 cut-off events. For 97/121 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3592 event pairs, 12 based on Foata normal form. 6/673 useless extension candidates. Maximal degree in co-relation 1259. Up to 154 conditions per place. [2022-11-18 18:29:38,356 INFO L137 encePairwiseOnDemand]: 143/155 looper letters, 43 selfloop transitions, 27 changer transitions 1/229 dead transitions. [2022-11-18 18:29:38,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 229 transitions, 983 flow [2022-11-18 18:29:38,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:29:38,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 18:29:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2517 transitions. [2022-11-18 18:29:38,364 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7381231671554253 [2022-11-18 18:29:38,364 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2517 transitions. [2022-11-18 18:29:38,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2517 transitions. [2022-11-18 18:29:38,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:38,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2517 transitions. [2022-11-18 18:29:38,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 114.4090909090909) internal successors, (2517), 22 states have internal predecessors, (2517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:38,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 155.0) internal successors, (3565), 23 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:38,381 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 155.0) internal successors, (3565), 23 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:38,381 INFO L175 Difference]: Start difference. First operand has 157 places, 196 transitions, 723 flow. Second operand 22 states and 2517 transitions. [2022-11-18 18:29:38,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 229 transitions, 983 flow [2022-11-18 18:29:38,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 229 transitions, 982 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:29:38,392 INFO L231 Difference]: Finished difference. Result has 182 places, 209 transitions, 870 flow [2022-11-18 18:29:38,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=870, PETRI_PLACES=182, PETRI_TRANSITIONS=209} [2022-11-18 18:29:38,396 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 38 predicate places. [2022-11-18 18:29:38,396 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 209 transitions, 870 flow [2022-11-18 18:29:38,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 113.55555555555556) internal successors, (2044), 18 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:38,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:38,398 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:38,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:38,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:38,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_routineErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 18:29:38,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:38,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1847706417, now seen corresponding path program 2 times [2022-11-18 18:29:38,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:38,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329286081] [2022-11-18 18:29:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:38,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:39,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:39,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329286081] [2022-11-18 18:29:39,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329286081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:39,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107909916] [2022-11-18 18:29:39,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:29:39,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:39,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:39,059 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:39,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:29:39,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:29:39,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:29:39,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:29:39,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:39,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:29:39,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:29:39,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:29:39,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:29:39,282 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:29:39,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:29:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 18:29:39,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:29:39,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107909916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:39,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:29:39,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-11-18 18:29:39,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064054163] [2022-11-18 18:29:39,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:39,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:29:39,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:39,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:29:39,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-18 18:29:39,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 155 [2022-11-18 18:29:39,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 209 transitions, 870 flow. Second operand has 6 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:39,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:39,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 155 [2022-11-18 18:29:39,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:40,038 INFO L130 PetriNetUnfolder]: 503/2604 cut-off events. [2022-11-18 18:29:40,039 INFO L131 PetriNetUnfolder]: For 485/525 co-relation queries the response was YES. [2022-11-18 18:29:40,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4545 conditions, 2604 events. 503/2604 cut-off events. For 485/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 19124 event pairs, 101 based on Foata normal form. 7/2375 useless extension candidates. Maximal degree in co-relation 4527. Up to 658 conditions per place. [2022-11-18 18:29:40,055 INFO L137 encePairwiseOnDemand]: 144/155 looper letters, 128 selfloop transitions, 33 changer transitions 0/284 dead transitions. [2022-11-18 18:29:40,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 284 transitions, 1483 flow [2022-11-18 18:29:40,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:29:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:29:40,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 767 transitions. [2022-11-18 18:29:40,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8247311827956989 [2022-11-18 18:29:40,059 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 767 transitions. [2022-11-18 18:29:40,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 767 transitions. [2022-11-18 18:29:40,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:40,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 767 transitions. [2022-11-18 18:29:40,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:40,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:40,064 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:40,065 INFO L175 Difference]: Start difference. First operand has 182 places, 209 transitions, 870 flow. Second operand 6 states and 767 transitions. [2022-11-18 18:29:40,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 284 transitions, 1483 flow [2022-11-18 18:29:40,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 284 transitions, 1455 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-18 18:29:40,075 INFO L231 Difference]: Finished difference. Result has 186 places, 237 transitions, 1140 flow [2022-11-18 18:29:40,075 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1140, PETRI_PLACES=186, PETRI_TRANSITIONS=237} [2022-11-18 18:29:40,076 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 42 predicate places. [2022-11-18 18:29:40,076 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 237 transitions, 1140 flow [2022-11-18 18:29:40,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:40,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:40,077 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:40,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:40,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:40,283 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 18:29:40,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:40,284 INFO L85 PathProgramCache]: Analyzing trace with hash -425152219, now seen corresponding path program 1 times [2022-11-18 18:29:40,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:40,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177808278] [2022-11-18 18:29:40,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:40,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 18:29:40,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:40,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177808278] [2022-11-18 18:29:40,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177808278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:40,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401245310] [2022-11-18 18:29:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:40,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:40,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:40,431 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:40,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:29:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:40,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:29:40,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:29:40,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:41,182 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:29:41,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401245310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:29:41,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:29:41,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 17, 17] total 34 [2022-11-18 18:29:41,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083369553] [2022-11-18 18:29:41,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:41,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 18:29:41,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:41,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 18:29:41,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:29:41,190 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 155 [2022-11-18 18:29:41,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 237 transitions, 1140 flow. Second operand has 34 states, 34 states have (on average 113.20588235294117) internal successors, (3849), 34 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:41,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:41,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 155 [2022-11-18 18:29:41,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:42,178 INFO L130 PetriNetUnfolder]: 205/1314 cut-off events. [2022-11-18 18:29:42,178 INFO L131 PetriNetUnfolder]: For 589/609 co-relation queries the response was YES. [2022-11-18 18:29:42,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2498 conditions, 1314 events. 205/1314 cut-off events. For 589/609 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7841 event pairs, 11 based on Foata normal form. 10/1237 useless extension candidates. Maximal degree in co-relation 2475. Up to 235 conditions per place. [2022-11-18 18:29:42,187 INFO L137 encePairwiseOnDemand]: 144/155 looper letters, 42 selfloop transitions, 49 changer transitions 0/274 dead transitions. [2022-11-18 18:29:42,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 274 transitions, 1569 flow [2022-11-18 18:29:42,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 18:29:42,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-18 18:29:42,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5270 transitions. [2022-11-18 18:29:42,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2022-11-18 18:29:42,200 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5270 transitions. [2022-11-18 18:29:42,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5270 transitions. [2022-11-18 18:29:42,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:42,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5270 transitions. [2022-11-18 18:29:42,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 112.12765957446808) internal successors, (5270), 47 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:42,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 155.0) internal successors, (7440), 48 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:42,236 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 155.0) internal successors, (7440), 48 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:42,236 INFO L175 Difference]: Start difference. First operand has 186 places, 237 transitions, 1140 flow. Second operand 47 states and 5270 transitions. [2022-11-18 18:29:42,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 274 transitions, 1569 flow [2022-11-18 18:29:42,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 274 transitions, 1551 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-11-18 18:29:42,249 INFO L231 Difference]: Finished difference. Result has 227 places, 246 transitions, 1376 flow [2022-11-18 18:29:42,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1376, PETRI_PLACES=227, PETRI_TRANSITIONS=246} [2022-11-18 18:29:42,251 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 83 predicate places. [2022-11-18 18:29:42,251 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 246 transitions, 1376 flow [2022-11-18 18:29:42,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 113.20588235294117) internal successors, (3849), 34 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:42,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:42,253 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 2, 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, 1, 1, 1, 1] [2022-11-18 18:29:42,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:42,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 18:29:42,459 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 18:29:42,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:42,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1983336082, now seen corresponding path program 1 times [2022-11-18 18:29:42,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:42,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388767755] [2022-11-18 18:29:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:42,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:43,473 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:29:43,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:43,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388767755] [2022-11-18 18:29:43,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388767755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:43,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423373635] [2022-11-18 18:29:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:43,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:43,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:43,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:43,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:29:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:43,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:29:43,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:29:43,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:29:44,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423373635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:29:44,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:29:44,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2022-11-18 18:29:44,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127893727] [2022-11-18 18:29:44,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:44,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-18 18:29:44,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:44,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-18 18:29:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2022-11-18 18:29:44,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 155 [2022-11-18 18:29:44,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 246 transitions, 1376 flow. Second operand has 66 states, 66 states have (on average 113.54545454545455) internal successors, (7494), 66 states have internal predecessors, (7494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:44,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:44,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 155 [2022-11-18 18:29:44,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:47,497 INFO L130 PetriNetUnfolder]: 205/1394 cut-off events. [2022-11-18 18:29:47,497 INFO L131 PetriNetUnfolder]: For 2430/2450 co-relation queries the response was YES. [2022-11-18 18:29:47,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 1394 events. 205/1394 cut-off events. For 2430/2450 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7844 event pairs, 11 based on Foata normal form. 17/1324 useless extension candidates. Maximal degree in co-relation 2975. Up to 235 conditions per place. [2022-11-18 18:29:47,507 INFO L137 encePairwiseOnDemand]: 146/155 looper letters, 74 selfloop transitions, 96 changer transitions 0/354 dead transitions. [2022-11-18 18:29:47,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 354 transitions, 2568 flow [2022-11-18 18:29:47,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-11-18 18:29:47,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2022-11-18 18:29:47,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 10509 transitions. [2022-11-18 18:29:47,532 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7290322580645161 [2022-11-18 18:29:47,533 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 10509 transitions. [2022-11-18 18:29:47,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 10509 transitions. [2022-11-18 18:29:47,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:47,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 10509 transitions. [2022-11-18 18:29:47,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 113.0) internal successors, (10509), 93 states have internal predecessors, (10509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:47,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 155.0) internal successors, (14570), 94 states have internal predecessors, (14570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:47,646 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 155.0) internal successors, (14570), 94 states have internal predecessors, (14570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:47,646 INFO L175 Difference]: Start difference. First operand has 227 places, 246 transitions, 1376 flow. Second operand 93 states and 10509 transitions. [2022-11-18 18:29:47,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 354 transitions, 2568 flow [2022-11-18 18:29:47,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 354 transitions, 2473 flow, removed 26 selfloop flow, removed 20 redundant places. [2022-11-18 18:29:47,669 INFO L231 Difference]: Finished difference. Result has 316 places, 295 transitions, 2012 flow [2022-11-18 18:29:47,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=2012, PETRI_PLACES=316, PETRI_TRANSITIONS=295} [2022-11-18 18:29:47,672 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 172 predicate places. [2022-11-18 18:29:47,672 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 295 transitions, 2012 flow [2022-11-18 18:29:47,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 113.54545454545455) internal successors, (7494), 66 states have internal predecessors, (7494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:47,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:47,675 INFO L209 CegarLoopForPetriNet]: trace histogram [31, 31, 31, 31, 31, 2, 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, 1, 1, 1, 1] [2022-11-18 18:29:47,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:47,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:47,888 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 18:29:47,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:47,888 INFO L85 PathProgramCache]: Analyzing trace with hash -404294034, now seen corresponding path program 2 times [2022-11-18 18:29:47,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:47,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43861655] [2022-11-18 18:29:47,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:47,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:29:51,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:51,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43861655] [2022-11-18 18:29:51,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43861655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:51,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856848484] [2022-11-18 18:29:51,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:29:51,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:51,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:51,077 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:51,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:29:51,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:29:51,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:29:51,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-18 18:29:51,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:29:51,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:55,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:29:55,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856848484] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:29:55,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:29:55,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 130 [2022-11-18 18:29:55,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348150095] [2022-11-18 18:29:55,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:55,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-11-18 18:29:55,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:55,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-11-18 18:29:55,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2022-11-18 18:29:55,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 155 [2022-11-18 18:29:55,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 295 transitions, 2012 flow. Second operand has 130 states, 130 states have (on average 113.52307692307693) internal successors, (14758), 130 states have internal predecessors, (14758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:55,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:55,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 155 [2022-11-18 18:29:55,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:03,634 INFO L130 PetriNetUnfolder]: 205/1554 cut-off events. [2022-11-18 18:30:03,634 INFO L131 PetriNetUnfolder]: For 17130/17150 co-relation queries the response was YES. [2022-11-18 18:30:03,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4150 conditions, 1554 events. 205/1554 cut-off events. For 17130/17150 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7830 event pairs, 11 based on Foata normal form. 33/1500 useless extension candidates. Maximal degree in co-relation 4101. Up to 235 conditions per place. [2022-11-18 18:30:03,647 INFO L137 encePairwiseOnDemand]: 146/155 looper letters, 138 selfloop transitions, 192 changer transitions 0/514 dead transitions. [2022-11-18 18:30:03,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 514 transitions, 4820 flow [2022-11-18 18:30:03,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2022-11-18 18:30:03,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2022-11-18 18:30:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 21341 transitions. [2022-11-18 18:30:03,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7284860897764124 [2022-11-18 18:30:03,684 INFO L72 ComplementDD]: Start complementDD. Operand 189 states and 21341 transitions. [2022-11-18 18:30:03,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 189 states and 21341 transitions. [2022-11-18 18:30:03,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:03,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 189 states and 21341 transitions. [2022-11-18 18:30:03,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 190 states, 189 states have (on average 112.91534391534391) internal successors, (21341), 189 states have internal predecessors, (21341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:03,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 190 states, 190 states have (on average 155.0) internal successors, (29450), 190 states have internal predecessors, (29450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:03,788 INFO L81 ComplementDD]: Finished complementDD. Result has 190 states, 190 states have (on average 155.0) internal successors, (29450), 190 states have internal predecessors, (29450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:03,788 INFO L175 Difference]: Start difference. First operand has 316 places, 295 transitions, 2012 flow. Second operand 189 states and 21341 transitions. [2022-11-18 18:30:03,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 514 transitions, 4820 flow [2022-11-18 18:30:03,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 514 transitions, 4699 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-18 18:30:03,840 INFO L231 Difference]: Finished difference. Result has 495 places, 392 transitions, 3522 flow [2022-11-18 18:30:03,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=189, PETRI_FLOW=3522, PETRI_PLACES=495, PETRI_TRANSITIONS=392} [2022-11-18 18:30:03,842 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 351 predicate places. [2022-11-18 18:30:03,843 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 392 transitions, 3522 flow [2022-11-18 18:30:03,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 113.52307692307693) internal successors, (14758), 130 states have internal predecessors, (14758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:03,847 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:03,847 INFO L209 CegarLoopForPetriNet]: trace histogram [63, 63, 63, 63, 63, 2, 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, 1, 1, 1, 1] [2022-11-18 18:30:03,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:04,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:04,053 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-18 18:30:04,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1890418798, now seen corresponding path program 3 times [2022-11-18 18:30:04,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:04,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205062615] [2022-11-18 18:30:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:04,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:14,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9841 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:30:14,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:14,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205062615] [2022-11-18 18:30:14,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205062615] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:30:14,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698946769] [2022-11-18 18:30:14,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:30:14,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:14,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:30:14,335 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:30:14,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c579650f-a429-4c11-9650-2a9dd15b2efb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process