./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:35:17,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:35:17,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:35:17,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:35:17,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:35:17,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:35:17,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:35:17,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:35:17,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:35:17,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:35:17,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:35:17,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:35:17,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:35:17,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:35:17,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:35:17,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:35:17,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:35:17,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:35:17,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:35:17,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:35:17,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:35:17,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:35:17,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:35:17,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:35:17,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:35:17,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:35:17,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:35:17,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:35:17,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:35:17,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:35:17,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:35:17,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:35:17,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:35:17,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:35:17,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:35:17,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:35:17,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:35:17,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:35:17,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:35:17,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:35:17,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:35:17,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 10:35:17,731 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:35:17,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:35:17,732 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:35:17,732 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:35:17,733 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:35:17,733 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:35:17,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:35:17,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:35:17,734 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:35:17,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:35:17,735 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:35:17,735 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:35:17,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:35:17,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:35:17,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:35:17,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:35:17,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:35:17,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:35:17,736 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 10:35:17,737 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:35:17,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:35:17,737 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:35:17,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:35:17,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:35:17,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:35:17,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:35:17,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:35:17,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:35:17,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:35:17,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:35:17,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:35:17,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:35:17,739 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:35:17,740 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:35:17,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:35:17,740 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_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 [2022-11-20 10:35:17,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:35:18,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:35:18,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:35:18,033 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:35:18,033 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:35:18,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2022-11-20 10:35:21,062 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:35:21,339 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:35:21,340 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2022-11-20 10:35:21,354 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN/data/085466a11/90fa1844656e4a5aae7b91b035f5531a/FLAG8a9454038 [2022-11-20 10:35:21,370 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN/data/085466a11/90fa1844656e4a5aae7b91b035f5531a [2022-11-20 10:35:21,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:35:21,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:35:21,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:35:21,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:35:21,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:35:21,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:35:21" (1/1) ... [2022-11-20 10:35:21,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c1f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:21, skipping insertion in model container [2022-11-20 10:35:21,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:35:21" (1/1) ... [2022-11-20 10:35:21,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:35:21,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:35:21,784 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i[30176,30189] [2022-11-20 10:35:21,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:35:21,838 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:35:21,893 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i[30176,30189] [2022-11-20 10:35:21,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:35:21,944 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:35:21,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:21 WrapperNode [2022-11-20 10:35:21,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:35:21,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:35:21,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:35:21,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:35:21,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:21" (1/1) ... [2022-11-20 10:35:21,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:21" (1/1) ... [2022-11-20 10:35:21,990 INFO L138 Inliner]: procedures = 171, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-11-20 10:35:21,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:35:21,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:35:21,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:35:21,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:35:22,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:21" (1/1) ... [2022-11-20 10:35:22,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:21" (1/1) ... [2022-11-20 10:35:22,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:21" (1/1) ... [2022-11-20 10:35:22,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:21" (1/1) ... [2022-11-20 10:35:22,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:21" (1/1) ... [2022-11-20 10:35:22,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:21" (1/1) ... [2022-11-20 10:35:22,057 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:21" (1/1) ... [2022-11-20 10:35:22,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:21" (1/1) ... [2022-11-20 10:35:22,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:35:22,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:35:22,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:35:22,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:35:22,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:21" (1/1) ... [2022-11-20 10:35:22,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:35:22,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:22,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:35:22,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ea4dce-e08b-4850-9b49-c6809d39db96/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:35:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:35:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:35:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:35:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:35:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:35:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 10:35:22,157 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 10:35:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:35:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2022-11-20 10:35:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:35:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:35:22,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:35:22,159 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:35:22,324 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:35:22,327 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:35:22,622 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:35:22,631 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:35:22,631 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-20 10:35:22,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:35:22 BoogieIcfgContainer [2022-11-20 10:35:22,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:35:22,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:35:22,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:35:22,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:35:22,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:35:21" (1/3) ... [2022-11-20 10:35:22,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6869b9f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:35:22, skipping insertion in model container [2022-11-20 10:35:22,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:21" (2/3) ... [2022-11-20 10:35:22,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6869b9f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:35:22, skipping insertion in model container [2022-11-20 10:35:22,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:35:22" (3/3) ... [2022-11-20 10:35:22,644 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2022-11-20 10:35:22,653 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:35:22,665 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:35:22,665 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 10:35:22,665 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:35:22,733 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 10:35:22,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 133 transitions, 274 flow [2022-11-20 10:35:22,885 INFO L130 PetriNetUnfolder]: 21/181 cut-off events. [2022-11-20 10:35:22,885 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 10:35:22,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 181 events. 21/181 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 560 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 97. Up to 6 conditions per place. [2022-11-20 10:35:22,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 133 transitions, 274 flow [2022-11-20 10:35:22,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 133 transitions, 274 flow [2022-11-20 10:35:22,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:35:22,925 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;@667f1ef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:35:22,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-20 10:35:22,938 INFO L130 PetriNetUnfolder]: 4/49 cut-off events. [2022-11-20 10:35:22,938 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:35:22,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:22,939 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] [2022-11-20 10:35:22,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 10:35:22,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:22,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2137770880, now seen corresponding path program 1 times [2022-11-20 10:35:22,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:22,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195539785] [2022-11-20 10:35:22,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:22,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:23,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:23,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195539785] [2022-11-20 10:35:23,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195539785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:23,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:23,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:35:23,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339516726] [2022-11-20 10:35:23,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:23,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:35:23,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:23,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:35:23,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:35:23,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 133 [2022-11-20 10:35:23,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 133 transitions, 274 flow. Second operand has 2 states, 2 states have (on average 119.0) internal successors, (238), 2 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:23,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 133 [2022-11-20 10:35:23,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:23,264 INFO L130 PetriNetUnfolder]: 3/161 cut-off events. [2022-11-20 10:35:23,269 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-20 10:35:23,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 161 events. 3/161 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 311 event pairs, 0 based on Foata normal form. 18/163 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2022-11-20 10:35:23,272 INFO L137 encePairwiseOnDemand]: 121/133 looper letters, 2 selfloop transitions, 0 changer transitions 0/120 dead transitions. [2022-11-20 10:35:23,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 120 transitions, 252 flow [2022-11-20 10:35:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:35:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 10:35:23,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 250 transitions. [2022-11-20 10:35:23,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9398496240601504 [2022-11-20 10:35:23,292 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 250 transitions. [2022-11-20 10:35:23,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 250 transitions. [2022-11-20 10:35:23,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:23,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 250 transitions. [2022-11-20 10:35:23,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,317 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,319 INFO L175 Difference]: Start difference. First operand has 122 places, 133 transitions, 274 flow. Second operand 2 states and 250 transitions. [2022-11-20 10:35:23,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 120 transitions, 252 flow [2022-11-20 10:35:23,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 120 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:35:23,331 INFO L231 Difference]: Finished difference. Result has 122 places, 120 transitions, 248 flow [2022-11-20 10:35:23,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=248, PETRI_PLACES=122, PETRI_TRANSITIONS=120} [2022-11-20 10:35:23,340 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 0 predicate places. [2022-11-20 10:35:23,341 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 120 transitions, 248 flow [2022-11-20 10:35:23,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 119.0) internal successors, (238), 2 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:23,343 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] [2022-11-20 10:35:23,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:35:23,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 10:35:23,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:23,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1075134475, now seen corresponding path program 1 times [2022-11-20 10:35:23,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:23,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770975613] [2022-11-20 10:35:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:23,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:23,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:23,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770975613] [2022-11-20 10:35:23,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770975613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:23,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:23,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:23,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027169795] [2022-11-20 10:35:23,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:23,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:23,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:23,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:23,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:23,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 133 [2022-11-20 10:35:23,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 120 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:23,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 133 [2022-11-20 10:35:23,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:23,535 INFO L130 PetriNetUnfolder]: 1/139 cut-off events. [2022-11-20 10:35:23,535 INFO L131 PetriNetUnfolder]: For 9/20 co-relation queries the response was YES. [2022-11-20 10:35:23,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 139 events. 1/139 cut-off events. For 9/20 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 156 event pairs, 0 based on Foata normal form. 1/128 useless extension candidates. Maximal degree in co-relation 154. Up to 7 conditions per place. [2022-11-20 10:35:23,537 INFO L137 encePairwiseOnDemand]: 130/133 looper letters, 9 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2022-11-20 10:35:23,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 122 transitions, 274 flow [2022-11-20 10:35:23,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:35:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2022-11-20 10:35:23,540 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8646616541353384 [2022-11-20 10:35:23,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2022-11-20 10:35:23,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2022-11-20 10:35:23,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:23,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2022-11-20 10:35:23,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,545 INFO L175 Difference]: Start difference. First operand has 122 places, 120 transitions, 248 flow. Second operand 3 states and 345 transitions. [2022-11-20 10:35:23,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 122 transitions, 274 flow [2022-11-20 10:35:23,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 122 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:35:23,549 INFO L231 Difference]: Finished difference. Result has 125 places, 120 transitions, 256 flow [2022-11-20 10:35:23,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=125, PETRI_TRANSITIONS=120} [2022-11-20 10:35:23,550 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 3 predicate places. [2022-11-20 10:35:23,550 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 120 transitions, 256 flow [2022-11-20 10:35:23,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,551 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:23,551 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] [2022-11-20 10:35:23,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:35:23,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 10:35:23,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:23,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1066176780, now seen corresponding path program 1 times [2022-11-20 10:35:23,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:23,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907400104] [2022-11-20 10:35:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:23,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:23,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:23,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907400104] [2022-11-20 10:35:23,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907400104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:23,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:23,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:35:23,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882889136] [2022-11-20 10:35:23,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:23,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:23,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:23,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:23,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:23,649 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 133 [2022-11-20 10:35:23,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 120 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:23,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 133 [2022-11-20 10:35:23,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:23,778 INFO L130 PetriNetUnfolder]: 30/507 cut-off events. [2022-11-20 10:35:23,778 INFO L131 PetriNetUnfolder]: For 12/16 co-relation queries the response was YES. [2022-11-20 10:35:23,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 507 events. 30/507 cut-off events. For 12/16 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2568 event pairs, 11 based on Foata normal form. 1/452 useless extension candidates. Maximal degree in co-relation 600. Up to 53 conditions per place. [2022-11-20 10:35:23,783 INFO L137 encePairwiseOnDemand]: 124/133 looper letters, 18 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2022-11-20 10:35:23,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 127 transitions, 321 flow [2022-11-20 10:35:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:23,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:35:23,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2022-11-20 10:35:23,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8421052631578947 [2022-11-20 10:35:23,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2022-11-20 10:35:23,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2022-11-20 10:35:23,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:23,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2022-11-20 10:35:23,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,799 INFO L175 Difference]: Start difference. First operand has 125 places, 120 transitions, 256 flow. Second operand 3 states and 336 transitions. [2022-11-20 10:35:23,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 127 transitions, 321 flow [2022-11-20 10:35:23,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 127 transitions, 317 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:35:23,804 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 290 flow [2022-11-20 10:35:23,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2022-11-20 10:35:23,805 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 3 predicate places. [2022-11-20 10:35:23,806 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 290 flow [2022-11-20 10:35:23,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:23,806 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:23,807 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] [2022-11-20 10:35:23,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:35:23,807 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 10:35:23,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:23,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1331407629, now seen corresponding path program 1 times [2022-11-20 10:35:23,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:23,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756345232] [2022-11-20 10:35:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:23,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:35:23,875 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:35:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:35:23,947 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:35:23,947 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:35:23,948 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-20 10:35:23,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-20 10:35:23,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-20 10:35:23,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-20 10:35:23,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-20 10:35:23,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-20 10:35:23,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-20 10:35:23,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-20 10:35:23,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-20 10:35:23,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-20 10:35:23,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-20 10:35:23,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:35:23,953 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-20 10:35:23,956 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:35:23,956 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 10:35:23,988 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:35:23,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 179 transitions, 376 flow [2022-11-20 10:35:24,038 INFO L130 PetriNetUnfolder]: 37/306 cut-off events. [2022-11-20 10:35:24,039 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 10:35:24,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 306 events. 37/306 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1105 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 183. Up to 9 conditions per place. [2022-11-20 10:35:24,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 179 transitions, 376 flow [2022-11-20 10:35:24,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 179 transitions, 376 flow [2022-11-20 10:35:24,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:35:24,050 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;@667f1ef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:35:24,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-20 10:35:24,056 INFO L130 PetriNetUnfolder]: 4/49 cut-off events. [2022-11-20 10:35:24,056 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:35:24,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:24,057 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] [2022-11-20 10:35:24,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 10:35:24,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:24,058 INFO L85 PathProgramCache]: Analyzing trace with hash 746494931, now seen corresponding path program 1 times [2022-11-20 10:35:24,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:24,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990233588] [2022-11-20 10:35:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:24,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:24,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:24,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990233588] [2022-11-20 10:35:24,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990233588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:24,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:24,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:35:24,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864461133] [2022-11-20 10:35:24,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:24,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:35:24,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:24,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:35:24,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:35:24,121 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 179 [2022-11-20 10:35:24,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 179 transitions, 376 flow. Second operand has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:24,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:24,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 179 [2022-11-20 10:35:24,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:24,189 INFO L130 PetriNetUnfolder]: 6/272 cut-off events. [2022-11-20 10:35:24,189 INFO L131 PetriNetUnfolder]: For 18/22 co-relation queries the response was YES. [2022-11-20 10:35:24,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 272 events. 6/272 cut-off events. For 18/22 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 787 event pairs, 0 based on Foata normal form. 45/289 useless extension candidates. Maximal degree in co-relation 165. Up to 7 conditions per place. [2022-11-20 10:35:24,192 INFO L137 encePairwiseOnDemand]: 161/179 looper letters, 4 selfloop transitions, 0 changer transitions 0/160 dead transitions. [2022-11-20 10:35:24,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 160 transitions, 346 flow [2022-11-20 10:35:24,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:35:24,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 10:35:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 334 transitions. [2022-11-20 10:35:24,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9329608938547486 [2022-11-20 10:35:24,197 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 334 transitions. [2022-11-20 10:35:24,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 334 transitions. [2022-11-20 10:35:24,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:24,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 334 transitions. [2022-11-20 10:35:24,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 167.0) internal successors, (334), 2 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:24,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:24,201 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:24,201 INFO L175 Difference]: Start difference. First operand has 163 places, 179 transitions, 376 flow. Second operand 2 states and 334 transitions. [2022-11-20 10:35:24,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 160 transitions, 346 flow [2022-11-20 10:35:24,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 160 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:35:24,209 INFO L231 Difference]: Finished difference. Result has 163 places, 160 transitions, 338 flow [2022-11-20 10:35:24,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=338, PETRI_PLACES=163, PETRI_TRANSITIONS=160} [2022-11-20 10:35:24,212 INFO L288 CegarLoopForPetriNet]: 163 programPoint places, 0 predicate places. [2022-11-20 10:35:24,212 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 160 transitions, 338 flow [2022-11-20 10:35:24,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:24,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:24,213 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] [2022-11-20 10:35:24,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:35:24,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 10:35:24,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:24,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1938480616, now seen corresponding path program 1 times [2022-11-20 10:35:24,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:24,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694054382] [2022-11-20 10:35:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:24,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:24,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:24,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694054382] [2022-11-20 10:35:24,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694054382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:24,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:24,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:24,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114575124] [2022-11-20 10:35:24,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:24,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:24,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:24,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:24,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:24,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 179 [2022-11-20 10:35:24,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 160 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:24,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:24,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 179 [2022-11-20 10:35:24,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:24,379 INFO L130 PetriNetUnfolder]: 4/250 cut-off events. [2022-11-20 10:35:24,379 INFO L131 PetriNetUnfolder]: For 14/33 co-relation queries the response was YES. [2022-11-20 10:35:24,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 250 events. 4/250 cut-off events. For 14/33 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 648 event pairs, 0 based on Foata normal form. 1/227 useless extension candidates. Maximal degree in co-relation 281. Up to 16 conditions per place. [2022-11-20 10:35:24,382 INFO L137 encePairwiseOnDemand]: 176/179 looper letters, 13 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2022-11-20 10:35:24,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 164 transitions, 376 flow [2022-11-20 10:35:24,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:24,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:35:24,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2022-11-20 10:35:24,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8621973929236499 [2022-11-20 10:35:24,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2022-11-20 10:35:24,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2022-11-20 10:35:24,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:24,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2022-11-20 10:35:24,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:24,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:24,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:24,389 INFO L175 Difference]: Start difference. First operand has 163 places, 160 transitions, 338 flow. Second operand 3 states and 463 transitions. [2022-11-20 10:35:24,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 164 transitions, 376 flow [2022-11-20 10:35:24,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 164 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:35:24,393 INFO L231 Difference]: Finished difference. Result has 166 places, 161 transitions, 350 flow [2022-11-20 10:35:24,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=166, PETRI_TRANSITIONS=161} [2022-11-20 10:35:24,395 INFO L288 CegarLoopForPetriNet]: 163 programPoint places, 3 predicate places. [2022-11-20 10:35:24,395 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 161 transitions, 350 flow [2022-11-20 10:35:24,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:24,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:24,396 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] [2022-11-20 10:35:24,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:35:24,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 10:35:24,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:24,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1896991512, now seen corresponding path program 1 times [2022-11-20 10:35:24,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:24,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712479322] [2022-11-20 10:35:24,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:24,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:24,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:24,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712479322] [2022-11-20 10:35:24,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712479322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:24,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:24,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:35:24,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71187757] [2022-11-20 10:35:24,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:24,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:24,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:24,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:24,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:24,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 179 [2022-11-20 10:35:24,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 161 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:24,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:24,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 179 [2022-11-20 10:35:24,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:25,930 INFO L130 PetriNetUnfolder]: 1380/7346 cut-off events. [2022-11-20 10:35:25,930 INFO L131 PetriNetUnfolder]: For 242/302 co-relation queries the response was YES. [2022-11-20 10:35:25,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9871 conditions, 7346 events. 1380/7346 cut-off events. For 242/302 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 78817 event pairs, 506 based on Foata normal form. 2/6302 useless extension candidates. Maximal degree in co-relation 9864. Up to 1414 conditions per place. [2022-11-20 10:35:25,979 INFO L137 encePairwiseOnDemand]: 160/179 looper letters, 42 selfloop transitions, 14 changer transitions 0/186 dead transitions. [2022-11-20 10:35:25,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 186 transitions, 523 flow [2022-11-20 10:35:25,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:25,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:35:25,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2022-11-20 10:35:25,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8342644320297952 [2022-11-20 10:35:25,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2022-11-20 10:35:25,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2022-11-20 10:35:25,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:25,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2022-11-20 10:35:25,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:25,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:25,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:25,986 INFO L175 Difference]: Start difference. First operand has 166 places, 161 transitions, 350 flow. Second operand 3 states and 448 transitions. [2022-11-20 10:35:25,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 186 transitions, 523 flow [2022-11-20 10:35:25,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 186 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:35:25,991 INFO L231 Difference]: Finished difference. Result has 169 places, 175 transitions, 470 flow [2022-11-20 10:35:25,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=169, PETRI_TRANSITIONS=175} [2022-11-20 10:35:25,992 INFO L288 CegarLoopForPetriNet]: 163 programPoint places, 6 predicate places. [2022-11-20 10:35:25,992 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 175 transitions, 470 flow [2022-11-20 10:35:25,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:25,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:25,993 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] [2022-11-20 10:35:25,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:35:25,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 10:35:25,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:25,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1104014423, now seen corresponding path program 1 times [2022-11-20 10:35:25,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:25,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253449002] [2022-11-20 10:35:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:25,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:26,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:26,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:26,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253449002] [2022-11-20 10:35:26,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253449002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:26,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:26,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:35:26,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529227758] [2022-11-20 10:35:26,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:26,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:26,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:26,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:26,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:26,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 179 [2022-11-20 10:35:26,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 175 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:26,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:26,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 179 [2022-11-20 10:35:26,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:27,606 INFO L130 PetriNetUnfolder]: 1716/8660 cut-off events. [2022-11-20 10:35:27,606 INFO L131 PetriNetUnfolder]: For 2647/2913 co-relation queries the response was YES. [2022-11-20 10:35:27,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14417 conditions, 8660 events. 1716/8660 cut-off events. For 2647/2913 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 95714 event pairs, 793 based on Foata normal form. 18/7797 useless extension candidates. Maximal degree in co-relation 14409. Up to 2615 conditions per place. [2022-11-20 10:35:27,676 INFO L137 encePairwiseOnDemand]: 170/179 looper letters, 60 selfloop transitions, 14 changer transitions 0/202 dead transitions. [2022-11-20 10:35:27,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 202 transitions, 734 flow [2022-11-20 10:35:27,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:27,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:35:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2022-11-20 10:35:27,678 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8081936685288641 [2022-11-20 10:35:27,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2022-11-20 10:35:27,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2022-11-20 10:35:27,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:27,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2022-11-20 10:35:27,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:27,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:27,682 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:27,683 INFO L175 Difference]: Start difference. First operand has 169 places, 175 transitions, 470 flow. Second operand 3 states and 434 transitions. [2022-11-20 10:35:27,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 202 transitions, 734 flow [2022-11-20 10:35:27,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 202 transitions, 690 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:35:27,693 INFO L231 Difference]: Finished difference. Result has 171 places, 187 transitions, 568 flow [2022-11-20 10:35:27,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=568, PETRI_PLACES=171, PETRI_TRANSITIONS=187} [2022-11-20 10:35:27,695 INFO L288 CegarLoopForPetriNet]: 163 programPoint places, 8 predicate places. [2022-11-20 10:35:27,695 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 187 transitions, 568 flow [2022-11-20 10:35:27,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:27,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:27,696 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:27,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:35:27,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 10:35:27,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:27,697 INFO L85 PathProgramCache]: Analyzing trace with hash -410593878, now seen corresponding path program 1 times [2022-11-20 10:35:27,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:27,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498158663] [2022-11-20 10:35:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:27,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:35:27,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:35:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:35:27,733 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:35:27,734 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:35:27,734 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-20 10:35:27,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-20 10:35:27,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-20 10:35:27,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-20 10:35:27,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-20 10:35:27,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-20 10:35:27,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-20 10:35:27,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-20 10:35:27,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-20 10:35:27,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-20 10:35:27,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-20 10:35:27,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-20 10:35:27,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-20 10:35:27,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-20 10:35:27,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-20 10:35:27,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:35:27,738 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 10:35:27,738 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:35:27,738 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 10:35:27,774 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:35:27,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 225 transitions, 480 flow [2022-11-20 10:35:27,848 INFO L130 PetriNetUnfolder]: 58/476 cut-off events. [2022-11-20 10:35:27,848 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 10:35:27,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 476 events. 58/476 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1884 event pairs, 1 based on Foata normal form. 0/390 useless extension candidates. Maximal degree in co-relation 314. Up to 16 conditions per place. [2022-11-20 10:35:27,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 225 transitions, 480 flow [2022-11-20 10:35:27,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 225 transitions, 480 flow [2022-11-20 10:35:27,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:35:27,859 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;@667f1ef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:35:27,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-20 10:35:27,864 INFO L130 PetriNetUnfolder]: 4/49 cut-off events. [2022-11-20 10:35:27,864 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:35:27,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:27,864 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] [2022-11-20 10:35:27,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:27,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:27,865 INFO L85 PathProgramCache]: Analyzing trace with hash 341361300, now seen corresponding path program 1 times [2022-11-20 10:35:27,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:27,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060514192] [2022-11-20 10:35:27,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:27,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:27,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:27,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060514192] [2022-11-20 10:35:27,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060514192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:27,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:27,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:35:27,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78952454] [2022-11-20 10:35:27,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:27,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:35:27,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:27,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:35:27,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:35:27,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 225 [2022-11-20 10:35:27,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 225 transitions, 480 flow. Second operand has 2 states, 2 states have (on average 195.0) internal successors, (390), 2 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:27,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:27,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 225 [2022-11-20 10:35:27,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:27,971 INFO L130 PetriNetUnfolder]: 12/426 cut-off events. [2022-11-20 10:35:27,971 INFO L131 PetriNetUnfolder]: For 51/60 co-relation queries the response was YES. [2022-11-20 10:35:27,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 426 events. 12/426 cut-off events. For 51/60 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1526 event pairs, 1 based on Foata normal form. 108/490 useless extension candidates. Maximal degree in co-relation 286. Up to 16 conditions per place. [2022-11-20 10:35:27,975 INFO L137 encePairwiseOnDemand]: 201/225 looper letters, 6 selfloop transitions, 0 changer transitions 0/200 dead transitions. [2022-11-20 10:35:27,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 200 transitions, 442 flow [2022-11-20 10:35:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:35:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 10:35:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 418 transitions. [2022-11-20 10:35:27,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9288888888888889 [2022-11-20 10:35:27,978 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 418 transitions. [2022-11-20 10:35:27,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 418 transitions. [2022-11-20 10:35:27,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:27,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 418 transitions. [2022-11-20 10:35:27,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:27,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:27,982 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:27,982 INFO L175 Difference]: Start difference. First operand has 204 places, 225 transitions, 480 flow. Second operand 2 states and 418 transitions. [2022-11-20 10:35:27,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 200 transitions, 442 flow [2022-11-20 10:35:28,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 200 transitions, 442 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:35:28,016 INFO L231 Difference]: Finished difference. Result has 204 places, 200 transitions, 430 flow [2022-11-20 10:35:28,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=430, PETRI_PLACES=204, PETRI_TRANSITIONS=200} [2022-11-20 10:35:28,017 INFO L288 CegarLoopForPetriNet]: 204 programPoint places, 0 predicate places. [2022-11-20 10:35:28,017 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 200 transitions, 430 flow [2022-11-20 10:35:28,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 195.0) internal successors, (390), 2 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:28,018 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:28,018 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] [2022-11-20 10:35:28,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:35:28,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:28,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:28,019 INFO L85 PathProgramCache]: Analyzing trace with hash -847874935, now seen corresponding path program 1 times [2022-11-20 10:35:28,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:28,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580160704] [2022-11-20 10:35:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:28,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:28,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:28,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580160704] [2022-11-20 10:35:28,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580160704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:28,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:28,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:28,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876060819] [2022-11-20 10:35:28,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:28,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:28,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:28,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:28,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:28,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 225 [2022-11-20 10:35:28,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 200 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:28,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:28,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 225 [2022-11-20 10:35:28,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:28,216 INFO L130 PetriNetUnfolder]: 10/404 cut-off events. [2022-11-20 10:35:28,216 INFO L131 PetriNetUnfolder]: For 49/93 co-relation queries the response was YES. [2022-11-20 10:35:28,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 404 events. 10/404 cut-off events. For 49/93 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1406 event pairs, 1 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 462. Up to 30 conditions per place. [2022-11-20 10:35:28,221 INFO L137 encePairwiseOnDemand]: 222/225 looper letters, 15 selfloop transitions, 2 changer transitions 0/204 dead transitions. [2022-11-20 10:35:28,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 204 transitions, 472 flow [2022-11-20 10:35:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:35:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions. [2022-11-20 10:35:28,224 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8577777777777778 [2022-11-20 10:35:28,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions. [2022-11-20 10:35:28,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions. [2022-11-20 10:35:28,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:28,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions. [2022-11-20 10:35:28,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:28,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:28,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:28,229 INFO L175 Difference]: Start difference. First operand has 204 places, 200 transitions, 430 flow. Second operand 3 states and 579 transitions. [2022-11-20 10:35:28,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 204 transitions, 472 flow [2022-11-20 10:35:28,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 204 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:35:28,235 INFO L231 Difference]: Finished difference. Result has 207 places, 201 transitions, 442 flow [2022-11-20 10:35:28,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=207, PETRI_TRANSITIONS=201} [2022-11-20 10:35:28,237 INFO L288 CegarLoopForPetriNet]: 204 programPoint places, 3 predicate places. [2022-11-20 10:35:28,237 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 201 transitions, 442 flow [2022-11-20 10:35:28,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:28,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:28,238 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] [2022-11-20 10:35:28,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:35:28,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:28,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:28,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1544074780, now seen corresponding path program 1 times [2022-11-20 10:35:28,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:28,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715796003] [2022-11-20 10:35:28,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:28,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:28,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:28,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715796003] [2022-11-20 10:35:28,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715796003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:28,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:28,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:35:28,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014764964] [2022-11-20 10:35:28,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:28,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:28,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:28,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:28,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:28,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 225 [2022-11-20 10:35:28,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 201 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:28,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:28,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 225 [2022-11-20 10:35:28,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:44,908 INFO L130 PetriNetUnfolder]: 35164/121424 cut-off events. [2022-11-20 10:35:44,908 INFO L131 PetriNetUnfolder]: For 6181/9248 co-relation queries the response was YES. [2022-11-20 10:35:45,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175039 conditions, 121424 events. 35164/121424 cut-off events. For 6181/9248 co-relation queries the response was YES. Maximal size of possible extension queue 3043. Compared 1822911 event pairs, 14664 based on Foata normal form. 59/102139 useless extension candidates. Maximal degree in co-relation 175031. Up to 29486 conditions per place. [2022-11-20 10:35:46,244 INFO L137 encePairwiseOnDemand]: 198/225 looper letters, 62 selfloop transitions, 20 changer transitions 0/238 dead transitions. [2022-11-20 10:35:46,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 238 transitions, 701 flow [2022-11-20 10:35:46,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:46,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:35:46,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 554 transitions. [2022-11-20 10:35:46,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8207407407407408 [2022-11-20 10:35:46,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 554 transitions. [2022-11-20 10:35:46,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 554 transitions. [2022-11-20 10:35:46,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:46,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 554 transitions. [2022-11-20 10:35:46,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:46,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:46,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:46,251 INFO L175 Difference]: Start difference. First operand has 207 places, 201 transitions, 442 flow. Second operand 3 states and 554 transitions. [2022-11-20 10:35:46,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 238 transitions, 701 flow [2022-11-20 10:35:46,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 238 transitions, 699 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:35:46,269 INFO L231 Difference]: Finished difference. Result has 210 places, 221 transitions, 614 flow [2022-11-20 10:35:46,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=614, PETRI_PLACES=210, PETRI_TRANSITIONS=221} [2022-11-20 10:35:46,271 INFO L288 CegarLoopForPetriNet]: 204 programPoint places, 6 predicate places. [2022-11-20 10:35:46,272 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 221 transitions, 614 flow [2022-11-20 10:35:46,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:46,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:46,273 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] [2022-11-20 10:35:46,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:35:46,273 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:46,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:46,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2037280764, now seen corresponding path program 1 times [2022-11-20 10:35:46,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:46,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144431157] [2022-11-20 10:35:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:46,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:46,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:46,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144431157] [2022-11-20 10:35:46,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144431157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:46,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:46,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:35:46,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255174156] [2022-11-20 10:35:46,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:46,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:46,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:46,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:46,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:46,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 225 [2022-11-20 10:35:46,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 221 transitions, 614 flow. Second operand 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) [2022-11-20 10:35:46,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:46,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 225 [2022-11-20 10:35:46,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:36:03,861 INFO L130 PetriNetUnfolder]: 44880/140928 cut-off events. [2022-11-20 10:36:03,861 INFO L131 PetriNetUnfolder]: For 59740/66310 co-relation queries the response was YES. [2022-11-20 10:36:04,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267926 conditions, 140928 events. 44880/140928 cut-off events. For 59740/66310 co-relation queries the response was YES. Maximal size of possible extension queue 3396. Compared 2077798 event pairs, 21549 based on Foata normal form. 247/125546 useless extension candidates. Maximal degree in co-relation 267917. Up to 58501 conditions per place. [2022-11-20 10:36:05,089 INFO L137 encePairwiseOnDemand]: 212/225 looper letters, 92 selfloop transitions, 22 changer transitions 0/268 dead transitions. [2022-11-20 10:36:05,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 268 transitions, 1048 flow [2022-11-20 10:36:05,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:05,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:36:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 540 transitions. [2022-11-20 10:36:05,092 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-11-20 10:36:05,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 540 transitions. [2022-11-20 10:36:05,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 540 transitions. [2022-11-20 10:36:05,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:36:05,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 540 transitions. [2022-11-20 10:36:05,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:05,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:05,096 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:05,096 INFO L175 Difference]: Start difference. First operand has 210 places, 221 transitions, 614 flow. Second operand 3 states and 540 transitions. [2022-11-20 10:36:05,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 268 transitions, 1048 flow [2022-11-20 10:36:05,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 268 transitions, 980 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:36:05,184 INFO L231 Difference]: Finished difference. Result has 212 places, 241 transitions, 780 flow [2022-11-20 10:36:05,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=780, PETRI_PLACES=212, PETRI_TRANSITIONS=241} [2022-11-20 10:36:05,187 INFO L288 CegarLoopForPetriNet]: 204 programPoint places, 8 predicate places. [2022-11-20 10:36:05,187 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 241 transitions, 780 flow [2022-11-20 10:36:05,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-11-20 10:36:05,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:36:05,188 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, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:05,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:36:05,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:36:05,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:05,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1947927521, now seen corresponding path program 1 times [2022-11-20 10:36:05,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:05,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779167340] [2022-11-20 10:36:05,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:05,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:36:05,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:05,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779167340] [2022-11-20 10:36:05,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779167340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:05,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:05,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:36:05,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872125909] [2022-11-20 10:36:05,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:05,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:05,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:05,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:05,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:05,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 225 [2022-11-20 10:36:05,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 241 transitions, 780 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:05,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:36:05,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 225 [2022-11-20 10:36:05,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand