./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/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_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/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_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/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 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 --- 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 19:51:47,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:51:47,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:51:47,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:51:47,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:51:47,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:51:47,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:51:47,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:51:47,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:51:47,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:51:47,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:51:47,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:51:47,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:51:47,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:51:47,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:51:47,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:51:47,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:51:47,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:51:47,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:51:47,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:51:47,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:51:47,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:51:47,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:51:47,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:51:47,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:51:47,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:51:47,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:51:47,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:51:47,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:51:47,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:51:47,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:51:47,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:51:47,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:51:47,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:51:47,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:51:47,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:51:47,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:51:47,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:51:47,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:51:47,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:51:47,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:51:47,545 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 19:51:47,568 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:51:47,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:51:47,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:51:47,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:51:47,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:51:47,569 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:51:47,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:51:47,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:51:47,571 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:51:47,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:51:47,571 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:51:47,571 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:51:47,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:51:47,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:51:47,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:51:47,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:51:47,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:51:47,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:51:47,573 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 19:51:47,573 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:51:47,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:51:47,573 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:51:47,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:51:47,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:51:47,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:51:47,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:51:47,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:51:47,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:51:47,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:51:47,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:51:47,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:51:47,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:51:47,576 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:51:47,576 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:51:47,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:51:47,576 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_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 [2022-11-18 19:51:47,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:51:47,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:51:47,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:51:47,842 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:51:47,842 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:51:47,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i [2022-11-18 19:51:47,909 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/bin/uautomizer-TMbwUNV5ro/data/cd4303b6b/3547972bdb13426296568008bbb1e6f4/FLAGb08ae1fa9 [2022-11-18 19:51:48,460 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:51:48,461 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i [2022-11-18 19:51:48,475 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/bin/uautomizer-TMbwUNV5ro/data/cd4303b6b/3547972bdb13426296568008bbb1e6f4/FLAGb08ae1fa9 [2022-11-18 19:51:48,777 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/bin/uautomizer-TMbwUNV5ro/data/cd4303b6b/3547972bdb13426296568008bbb1e6f4 [2022-11-18 19:51:48,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:51:48,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:51:48,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:51:48,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:51:48,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:51:48,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:51:48" (1/1) ... [2022-11-18 19:51:48,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75dac240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:48, skipping insertion in model container [2022-11-18 19:51:48,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:51:48" (1/1) ... [2022-11-18 19:51:48,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:51:48,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:51:49,311 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_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2022-11-18 19:51:49,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:51:49,376 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:51:49,427 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_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2022-11-18 19:51:49,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:51:49,498 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:51:49,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:49 WrapperNode [2022-11-18 19:51:49,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:51:49,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:51:49,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:51:49,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:51:49,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:49" (1/1) ... [2022-11-18 19:51:49,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:49" (1/1) ... [2022-11-18 19:51:49,590 INFO L138 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 237 [2022-11-18 19:51:49,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:51:49,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:51:49,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:51:49,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:51:49,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:49" (1/1) ... [2022-11-18 19:51:49,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:49" (1/1) ... [2022-11-18 19:51:49,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:49" (1/1) ... [2022-11-18 19:51:49,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:49" (1/1) ... [2022-11-18 19:51:49,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:49" (1/1) ... [2022-11-18 19:51:49,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:49" (1/1) ... [2022-11-18 19:51:49,637 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:49" (1/1) ... [2022-11-18 19:51:49,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:49" (1/1) ... [2022-11-18 19:51:49,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:51:49,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:51:49,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:51:49,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:51:49,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:49" (1/1) ... [2022-11-18 19:51:49,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:51:49,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:49,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:51:49,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccbc4093-8777-4e4e-a7e8-84d89cb2988c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:51:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:51:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-18 19:51:49,747 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-18 19:51:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:51:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:51:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:51:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:51:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-18 19:51:49,749 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-18 19:51:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:51:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:51:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:51:49,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:51:49,752 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 19:51:49,934 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:51:49,941 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:51:50,459 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:51:50,470 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:51:50,471 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-11-18 19:51:50,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:51:50 BoogieIcfgContainer [2022-11-18 19:51:50,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:51:50,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:51:50,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:51:50,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:51:50,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:51:48" (1/3) ... [2022-11-18 19:51:50,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9dae6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:51:50, skipping insertion in model container [2022-11-18 19:51:50,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:49" (2/3) ... [2022-11-18 19:51:50,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9dae6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:51:50, skipping insertion in model container [2022-11-18 19:51:50,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:51:50" (3/3) ... [2022-11-18 19:51:50,486 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2022-11-18 19:51:50,496 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:51:50,509 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:51:50,509 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-18 19:51:50,510 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:51:50,622 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 19:51:50,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 256 transitions, 534 flow [2022-11-18 19:51:50,861 INFO L130 PetriNetUnfolder]: 58/474 cut-off events. [2022-11-18 19:51:50,862 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 19:51:50,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 474 events. 58/474 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2321 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 257. Up to 8 conditions per place. [2022-11-18 19:51:50,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 256 transitions, 534 flow [2022-11-18 19:51:50,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 256 transitions, 534 flow [2022-11-18 19:51:50,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:51:50,909 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;@1fe86428, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:51:50,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-18 19:51:50,946 INFO L130 PetriNetUnfolder]: 5/92 cut-off events. [2022-11-18 19:51:50,946 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:51:50,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:51:50,947 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:50,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 19:51:50,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:50,954 INFO L85 PathProgramCache]: Analyzing trace with hash 426725136, now seen corresponding path program 1 times [2022-11-18 19:51:50,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:50,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552015621] [2022-11-18 19:51:50,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:50,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:51,228 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 19:51:51,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:51,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552015621] [2022-11-18 19:51:51,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552015621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:51,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:51,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:51:51,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903570364] [2022-11-18 19:51:51,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:51,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:51:51,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:51,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:51:51,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:51:51,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 256 [2022-11-18 19:51:51,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 256 transitions, 534 flow. Second operand has 2 states, 2 states have (on average 223.0) internal successors, (446), 2 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:51,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:51:51,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 256 [2022-11-18 19:51:51,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:51:51,427 INFO L130 PetriNetUnfolder]: 11/424 cut-off events. [2022-11-18 19:51:51,428 INFO L131 PetriNetUnfolder]: For 33/43 co-relation queries the response was YES. [2022-11-18 19:51:51,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 424 events. 11/424 cut-off events. For 33/43 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2060 event pairs, 0 based on Foata normal form. 95/475 useless extension candidates. Maximal degree in co-relation 229. Up to 12 conditions per place. [2022-11-18 19:51:51,435 INFO L137 encePairwiseOnDemand]: 230/256 looper letters, 6 selfloop transitions, 0 changer transitions 0/228 dead transitions. [2022-11-18 19:51:51,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 228 transitions, 490 flow [2022-11-18 19:51:51,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:51:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 19:51:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 476 transitions. [2022-11-18 19:51:51,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9296875 [2022-11-18 19:51:51,454 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 476 transitions. [2022-11-18 19:51:51,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 476 transitions. [2022-11-18 19:51:51,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:51:51,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 476 transitions. [2022-11-18 19:51:51,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 238.0) internal successors, (476), 2 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 19:51:51,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states 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 19:51:51,477 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states 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 19:51:51,480 INFO L175 Difference]: Start difference. First operand has 229 places, 256 transitions, 534 flow. Second operand 2 states and 476 transitions. [2022-11-18 19:51:51,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 228 transitions, 490 flow [2022-11-18 19:51:51,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 228 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:51:51,490 INFO L231 Difference]: Finished difference. Result has 228 places, 228 transitions, 478 flow [2022-11-18 19:51:51,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=478, PETRI_PLACES=228, PETRI_TRANSITIONS=228} [2022-11-18 19:51:51,496 INFO L288 CegarLoopForPetriNet]: 229 programPoint places, -1 predicate places. [2022-11-18 19:51:51,497 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 228 transitions, 478 flow [2022-11-18 19:51:51,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 223.0) internal successors, (446), 2 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:51,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:51:51,504 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:51,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:51:51,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 19:51:51,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:51,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1251646608, now seen corresponding path program 1 times [2022-11-18 19:51:51,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:51,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130966744] [2022-11-18 19:51:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:51,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:51,753 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 19:51:51,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:51,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130966744] [2022-11-18 19:51:51,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130966744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:51,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:51,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:51,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058526554] [2022-11-18 19:51:51,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:51,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:51,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:51,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:51,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:51,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 256 [2022-11-18 19:51:51,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 228 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states 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 19:51:51,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:51:51,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 256 [2022-11-18 19:51:51,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:51:51,884 INFO L130 PetriNetUnfolder]: 8/339 cut-off events. [2022-11-18 19:51:51,885 INFO L131 PetriNetUnfolder]: For 27/43 co-relation queries the response was YES. [2022-11-18 19:51:51,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 339 events. 8/339 cut-off events. For 27/43 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1241 event pairs, 0 based on Foata normal form. 2/308 useless extension candidates. Maximal degree in co-relation 372. Up to 15 conditions per place. [2022-11-18 19:51:51,891 INFO L137 encePairwiseOnDemand]: 253/256 looper letters, 13 selfloop transitions, 2 changer transitions 0/230 dead transitions. [2022-11-18 19:51:51,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 230 transitions, 512 flow [2022-11-18 19:51:51,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:51,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:51:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-11-18 19:51:51,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8606770833333334 [2022-11-18 19:51:51,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-11-18 19:51:51,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-11-18 19:51:51,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:51:51,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-11-18 19:51:51,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states 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 19:51:51,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states 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 19:51:51,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states 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 19:51:51,907 INFO L175 Difference]: Start difference. First operand has 228 places, 228 transitions, 478 flow. Second operand 3 states and 661 transitions. [2022-11-18 19:51:51,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 230 transitions, 512 flow [2022-11-18 19:51:51,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 230 transitions, 512 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:51:51,919 INFO L231 Difference]: Finished difference. Result has 231 places, 228 transitions, 486 flow [2022-11-18 19:51:51,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=231, PETRI_TRANSITIONS=228} [2022-11-18 19:51:51,923 INFO L288 CegarLoopForPetriNet]: 229 programPoint places, 2 predicate places. [2022-11-18 19:51:51,924 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 228 transitions, 486 flow [2022-11-18 19:51:51,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states 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 19:51:51,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:51:51,926 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:51,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:51:51,926 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 19:51:51,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:51,928 INFO L85 PathProgramCache]: Analyzing trace with hash -214365241, now seen corresponding path program 1 times [2022-11-18 19:51:51,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:51,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761001081] [2022-11-18 19:51:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:51,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:51:51,996 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:51:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:51:52,065 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:51:52,065 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:51:52,067 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-11-18 19:51:52,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2022-11-18 19:51:52,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2022-11-18 19:51:52,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2022-11-18 19:51:52,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2022-11-18 19:51:52,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2022-11-18 19:51:52,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2022-11-18 19:51:52,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2022-11-18 19:51:52,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 24 remaining) [2022-11-18 19:51:52,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2022-11-18 19:51:52,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2022-11-18 19:51:52,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2022-11-18 19:51:52,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2022-11-18 19:51:52,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2022-11-18 19:51:52,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2022-11-18 19:51:52,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2022-11-18 19:51:52,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2022-11-18 19:51:52,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2022-11-18 19:51:52,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2022-11-18 19:51:52,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2022-11-18 19:51:52,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2022-11-18 19:51:52,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2022-11-18 19:51:52,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2022-11-18 19:51:52,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2022-11-18 19:51:52,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:51:52,075 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 19:51:52,083 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:51:52,083 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 19:51:52,181 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-18 19:51:52,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 412 transitions, 872 flow [2022-11-18 19:51:52,671 INFO L130 PetriNetUnfolder]: 197/1423 cut-off events. [2022-11-18 19:51:52,671 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-18 19:51:52,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1520 conditions, 1423 events. 197/1423 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9396 event pairs, 1 based on Foata normal form. 0/1167 useless extension candidates. Maximal degree in co-relation 857. Up to 32 conditions per place. [2022-11-18 19:51:52,703 INFO L82 GeneralOperation]: Start removeDead. Operand has 361 places, 412 transitions, 872 flow [2022-11-18 19:51:52,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 361 places, 412 transitions, 872 flow [2022-11-18 19:51:52,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:51:52,740 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;@1fe86428, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:51:52,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-18 19:51:52,752 INFO L130 PetriNetUnfolder]: 5/93 cut-off events. [2022-11-18 19:51:52,752 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:51:52,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:51:52,753 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:52,753 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-18 19:51:52,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:52,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1110975216, now seen corresponding path program 1 times [2022-11-18 19:51:52,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:52,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37168657] [2022-11-18 19:51:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:52,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:52,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:52,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37168657] [2022-11-18 19:51:52,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37168657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:52,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:52,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:51:52,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361049860] [2022-11-18 19:51:52,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:52,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:51:52,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:52,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:51:52,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:51:52,833 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 412 [2022-11-18 19:51:52,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 412 transitions, 872 flow. Second operand has 2 states, 2 states have (on average 349.0) internal successors, (698), 2 states have internal predecessors, (698), 0 states have call successors, (0), 0 states 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 19:51:52,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:51:52,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 412 [2022-11-18 19:51:52,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:51:53,341 INFO L130 PetriNetUnfolder]: 65/1283 cut-off events. [2022-11-18 19:51:53,342 INFO L131 PetriNetUnfolder]: For 237/324 co-relation queries the response was YES. [2022-11-18 19:51:53,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 1283 events. 65/1283 cut-off events. For 237/324 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8923 event pairs, 1 based on Foata normal form. 790/1932 useless extension candidates. Maximal degree in co-relation 801. Up to 73 conditions per place. [2022-11-18 19:51:53,374 INFO L137 encePairwiseOnDemand]: 364/412 looper letters, 12 selfloop transitions, 0 changer transitions 0/360 dead transitions. [2022-11-18 19:51:53,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 360 transitions, 792 flow [2022-11-18 19:51:53,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:51:53,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 19:51:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 756 transitions. [2022-11-18 19:51:53,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9174757281553398 [2022-11-18 19:51:53,378 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 756 transitions. [2022-11-18 19:51:53,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 756 transitions. [2022-11-18 19:51:53,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:51:53,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 756 transitions. [2022-11-18 19:51:53,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 378.0) internal successors, (756), 2 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 19:51:53,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 19:51:53,388 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 19:51:53,389 INFO L175 Difference]: Start difference. First operand has 361 places, 412 transitions, 872 flow. Second operand 2 states and 756 transitions. [2022-11-18 19:51:53,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 360 transitions, 792 flow [2022-11-18 19:51:53,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 360 transitions, 792 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:51:53,398 INFO L231 Difference]: Finished difference. Result has 358 places, 360 transitions, 768 flow [2022-11-18 19:51:53,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=768, PETRI_PLACES=358, PETRI_TRANSITIONS=360} [2022-11-18 19:51:53,406 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, -3 predicate places. [2022-11-18 19:51:53,406 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 360 transitions, 768 flow [2022-11-18 19:51:53,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 349.0) internal successors, (698), 2 states have internal predecessors, (698), 0 states have call successors, (0), 0 states 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 19:51:53,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:51:53,408 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:53,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:51:53,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-18 19:51:53,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:53,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1505620336, now seen corresponding path program 1 times [2022-11-18 19:51:53,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:53,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928604013] [2022-11-18 19:51:53,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:53,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:53,525 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 19:51:53,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:53,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928604013] [2022-11-18 19:51:53,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928604013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:53,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:53,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:53,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865514032] [2022-11-18 19:51:53,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:53,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:53,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:53,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:53,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:53,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 412 [2022-11-18 19:51:53,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 360 transitions, 768 flow. Second operand has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 19:51:53,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:51:53,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 412 [2022-11-18 19:51:53,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:51:53,999 INFO L130 PetriNetUnfolder]: 60/1123 cut-off events. [2022-11-18 19:51:53,999 INFO L131 PetriNetUnfolder]: For 242/384 co-relation queries the response was YES. [2022-11-18 19:51:54,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 1123 events. 60/1123 cut-off events. For 242/384 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7301 event pairs, 2 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 1292. Up to 80 conditions per place. [2022-11-18 19:51:54,036 INFO L137 encePairwiseOnDemand]: 409/412 looper letters, 21 selfloop transitions, 2 changer transitions 0/364 dead transitions. [2022-11-18 19:51:54,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 364 transitions, 822 flow [2022-11-18 19:51:54,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:51:54,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1047 transitions. [2022-11-18 19:51:54,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8470873786407767 [2022-11-18 19:51:54,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1047 transitions. [2022-11-18 19:51:54,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1047 transitions. [2022-11-18 19:51:54,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:51:54,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1047 transitions. [2022-11-18 19:51:54,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 349.0) internal successors, (1047), 3 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states 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 19:51:54,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 19:51:54,050 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 19:51:54,051 INFO L175 Difference]: Start difference. First operand has 358 places, 360 transitions, 768 flow. Second operand 3 states and 1047 transitions. [2022-11-18 19:51:54,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 364 transitions, 822 flow [2022-11-18 19:51:54,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 364 transitions, 822 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:51:54,063 INFO L231 Difference]: Finished difference. Result has 361 places, 361 transitions, 780 flow [2022-11-18 19:51:54,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=780, PETRI_PLACES=361, PETRI_TRANSITIONS=361} [2022-11-18 19:51:54,066 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 0 predicate places. [2022-11-18 19:51:54,067 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 361 transitions, 780 flow [2022-11-18 19:51:54,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 19:51:54,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:51:54,068 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:54,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:51:54,069 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr4ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-18 19:51:54,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash 344599479, now seen corresponding path program 1 times [2022-11-18 19:51:54,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:54,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269010238] [2022-11-18 19:51:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:54,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:54,137 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 19:51:54,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:54,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269010238] [2022-11-18 19:51:54,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269010238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:54,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:54,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:51:54,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507088415] [2022-11-18 19:51:54,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:54,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:54,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:54,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:54,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:54,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 412 [2022-11-18 19:51:54,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 361 transitions, 780 flow. Second operand has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states 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 19:51:54,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:51:54,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 412 [2022-11-18 19:51:54,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand