./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8 --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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- 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-e04fb08 [2022-11-16 12:27:31,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:27:31,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:27:31,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:27:31,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:27:31,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:27:31,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:27:31,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:27:31,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:27:31,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:27:31,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:27:31,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:27:31,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:27:31,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:27:31,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:27:31,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:27:31,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:27:31,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:27:31,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:27:31,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:27:31,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:27:31,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:27:31,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:27:31,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:27:31,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:27:31,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:27:31,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:27:31,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:27:31,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:27:31,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:27:31,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:27:31,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:27:31,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:27:31,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:27:31,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:27:31,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:27:31,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:27:31,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:27:31,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:27:31,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:27:31,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:27:31,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 12:27:31,785 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:27:31,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:27:31,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:27:31,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:27:31,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:27:31,788 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:27:31,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:27:31,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:27:31,789 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:27:31,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:27:31,790 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:27:31,790 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:27:31,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:27:31,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:27:31,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:27:31,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:27:31,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:27:31,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:27:31,792 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 12:27:31,793 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:27:31,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:27:31,793 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:27:31,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:27:31,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:27:31,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:27:31,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:27:31,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:27:31,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:27:31,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:27:31,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:27:31,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:27:31,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:27:31,797 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:27:31,797 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:27:31,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:27:31,798 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_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2022-11-16 12:27:32,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:27:32,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:27:32,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:27:32,219 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:27:32,220 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:27:32,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-11-16 12:27:32,323 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8/data/20d795766/28a6c5b2d2884a84b17fed7a38634e1f/FLAG20ac78673 [2022-11-16 12:27:33,041 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:27:33,048 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-11-16 12:27:33,075 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8/data/20d795766/28a6c5b2d2884a84b17fed7a38634e1f/FLAG20ac78673 [2022-11-16 12:27:33,323 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8/data/20d795766/28a6c5b2d2884a84b17fed7a38634e1f [2022-11-16 12:27:33,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:27:33,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:27:33,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:27:33,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:27:33,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:27:33,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:33" (1/1) ... [2022-11-16 12:27:33,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1688418d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:33, skipping insertion in model container [2022-11-16 12:27:33,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:33" (1/1) ... [2022-11-16 12:27:33,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:27:33,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:27:33,913 WARN L229 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_6c4893fa-7810-4ff7-9532-8083be6d05b7/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-11-16 12:27:33,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:27:33,970 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:27:34,036 WARN L229 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_6c4893fa-7810-4ff7-9532-8083be6d05b7/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-11-16 12:27:34,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:27:34,092 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:27:34,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:34 WrapperNode [2022-11-16 12:27:34,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:27:34,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:27:34,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:27:34,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:27:34,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:34" (1/1) ... [2022-11-16 12:27:34,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:34" (1/1) ... [2022-11-16 12:27:34,162 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2022-11-16 12:27:34,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:27:34,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:27:34,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:27:34,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:27:34,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:34" (1/1) ... [2022-11-16 12:27:34,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:34" (1/1) ... [2022-11-16 12:27:34,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:34" (1/1) ... [2022-11-16 12:27:34,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:34" (1/1) ... [2022-11-16 12:27:34,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:34" (1/1) ... [2022-11-16 12:27:34,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:34" (1/1) ... [2022-11-16 12:27:34,231 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:34" (1/1) ... [2022-11-16 12:27:34,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:34" (1/1) ... [2022-11-16 12:27:34,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:27:34,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:27:34,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:27:34,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:27:34,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:34" (1/1) ... [2022-11-16 12:27:34,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:27:34,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:34,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:27:34,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4893fa-7810-4ff7-9532-8083be6d05b7/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:27:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:27:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:27:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:27:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:27:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:27:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:27:34,364 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:27:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:27:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:27:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:27:34,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:27:34,367 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:27:34,530 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:27:34,533 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:27:34,936 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:27:34,946 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:27:34,946 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 12:27:34,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:34 BoogieIcfgContainer [2022-11-16 12:27:34,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:27:34,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:27:34,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:27:34,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:27:34,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:27:33" (1/3) ... [2022-11-16 12:27:34,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2edf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:34, skipping insertion in model container [2022-11-16 12:27:34,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:34" (2/3) ... [2022-11-16 12:27:34,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2edf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:34, skipping insertion in model container [2022-11-16 12:27:34,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:34" (3/3) ... [2022-11-16 12:27:34,961 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2022-11-16 12:27:34,972 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:27:34,986 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:27:34,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 12:27:34,987 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:27:35,068 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:27:35,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 136 transitions, 280 flow [2022-11-16 12:27:35,241 INFO L130 PetriNetUnfolder]: 17/180 cut-off events. [2022-11-16 12:27:35,241 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:27:35,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 180 events. 17/180 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 514 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2022-11-16 12:27:35,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 136 transitions, 280 flow [2022-11-16 12:27:35,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 136 transitions, 280 flow [2022-11-16 12:27:35,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:27:35,278 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;@747002f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:27:35,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 12:27:35,297 INFO L130 PetriNetUnfolder]: 2/54 cut-off events. [2022-11-16 12:27:35,298 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:27:35,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:35,299 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] [2022-11-16 12:27:35,299 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)] === [2022-11-16 12:27:35,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash -604963906, now seen corresponding path program 1 times [2022-11-16 12:27:35,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:35,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15028620] [2022-11-16 12:27:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:35,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:35,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:35,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15028620] [2022-11-16 12:27:35,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15028620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:35,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:35,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:27:35,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204401880] [2022-11-16 12:27:35,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:35,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:27:35,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:35,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:27:35,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:27:35,664 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 136 [2022-11-16 12:27:35,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 136 transitions, 280 flow. Second operand has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 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) [2022-11-16 12:27:35,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:35,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 136 [2022-11-16 12:27:35,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:35,802 INFO L130 PetriNetUnfolder]: 1/162 cut-off events. [2022-11-16 12:27:35,804 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-16 12:27:35,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 162 events. 1/162 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 290 event pairs, 0 based on Foata normal form. 16/164 useless extension candidates. Maximal degree in co-relation 4. Up to 3 conditions per place. [2022-11-16 12:27:35,807 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 2 selfloop transitions, 0 changer transitions 0/124 dead transitions. [2022-11-16 12:27:35,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 124 transitions, 260 flow [2022-11-16 12:27:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:27:35,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:27:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 257 transitions. [2022-11-16 12:27:35,833 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9448529411764706 [2022-11-16 12:27:35,835 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 257 transitions. [2022-11-16 12:27:35,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 257 transitions. [2022-11-16 12:27:35,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:35,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 257 transitions. [2022-11-16 12:27:35,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 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) [2022-11-16 12:27:35,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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) [2022-11-16 12:27:35,854 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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) [2022-11-16 12:27:35,857 INFO L175 Difference]: Start difference. First operand has 127 places, 136 transitions, 280 flow. Second operand 2 states and 257 transitions. [2022-11-16 12:27:35,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 124 transitions, 260 flow [2022-11-16 12:27:35,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 124 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:27:35,866 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 256 flow [2022-11-16 12:27:35,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=256, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2022-11-16 12:27:35,875 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, 0 predicate places. [2022-11-16 12:27:35,877 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 256 flow [2022-11-16 12:27:35,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 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) [2022-11-16 12:27:35,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:35,879 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] [2022-11-16 12:27:35,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:27:35,880 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)] === [2022-11-16 12:27:35,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:35,884 INFO L85 PathProgramCache]: Analyzing trace with hash 282539775, now seen corresponding path program 1 times [2022-11-16 12:27:35,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:35,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11707696] [2022-11-16 12:27:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:35,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:36,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:36,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11707696] [2022-11-16 12:27:36,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11707696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:36,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:36,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:27:36,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842895543] [2022-11-16 12:27:36,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:36,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:27:36,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:36,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:27:36,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:27:36,187 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 136 [2022-11-16 12:27:36,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2022-11-16 12:27:36,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:36,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 136 [2022-11-16 12:27:36,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:36,264 INFO L130 PetriNetUnfolder]: 0/143 cut-off events. [2022-11-16 12:27:36,264 INFO L131 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-11-16 12:27:36,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 143 events. 0/143 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 146 event pairs, 0 based on Foata normal form. 1/133 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-16 12:27:36,265 INFO L137 encePairwiseOnDemand]: 133/136 looper letters, 9 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2022-11-16 12:27:36,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 126 transitions, 282 flow [2022-11-16 12:27:36,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:27:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:27:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2022-11-16 12:27:36,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-11-16 12:27:36,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2022-11-16 12:27:36,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2022-11-16 12:27:36,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:36,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2022-11-16 12:27:36,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2022-11-16 12:27:36,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,288 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 256 flow. Second operand 3 states and 357 transitions. [2022-11-16 12:27:36,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 126 transitions, 282 flow [2022-11-16 12:27:36,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 126 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:27:36,295 INFO L231 Difference]: Finished difference. Result has 130 places, 124 transitions, 264 flow [2022-11-16 12:27:36,296 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2022-11-16 12:27:36,297 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, 3 predicate places. [2022-11-16 12:27:36,297 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 264 flow [2022-11-16 12:27:36,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2022-11-16 12:27:36,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:36,298 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:36,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:27:36,299 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)] === [2022-11-16 12:27:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:36,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1176707219, now seen corresponding path program 1 times [2022-11-16 12:27:36,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:36,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163535360] [2022-11-16 12:27:36,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:36,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:36,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:36,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163535360] [2022-11-16 12:27:36,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163535360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:36,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:36,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:27:36,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596492642] [2022-11-16 12:27:36,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:36,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:27:36,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:36,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:27:36,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:27:36,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 136 [2022-11-16 12:27:36,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2022-11-16 12:27:36,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:36,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 136 [2022-11-16 12:27:36,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:36,683 INFO L130 PetriNetUnfolder]: 29/511 cut-off events. [2022-11-16 12:27:36,683 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2022-11-16 12:27:36,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 511 events. 29/511 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2550 event pairs, 11 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 604. Up to 53 conditions per place. [2022-11-16 12:27:36,693 INFO L137 encePairwiseOnDemand]: 127/136 looper letters, 18 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2022-11-16 12:27:36,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 131 transitions, 329 flow [2022-11-16 12:27:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:27:36,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:27:36,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2022-11-16 12:27:36,698 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8529411764705882 [2022-11-16 12:27:36,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2022-11-16 12:27:36,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2022-11-16 12:27:36,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:36,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2022-11-16 12:27:36,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2022-11-16 12:27:36,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,708 INFO L175 Difference]: Start difference. First operand has 130 places, 124 transitions, 264 flow. Second operand 3 states and 348 transitions. [2022-11-16 12:27:36,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 131 transitions, 329 flow [2022-11-16 12:27:36,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 131 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:27:36,716 INFO L231 Difference]: Finished difference. Result has 130 places, 126 transitions, 298 flow [2022-11-16 12:27:36,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=130, PETRI_TRANSITIONS=126} [2022-11-16 12:27:36,719 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, 3 predicate places. [2022-11-16 12:27:36,720 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 126 transitions, 298 flow [2022-11-16 12:27:36,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2022-11-16 12:27:36,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:36,721 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:36,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:27:36,722 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)] === [2022-11-16 12:27:36,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:36,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1356610289, now seen corresponding path program 1 times [2022-11-16 12:27:36,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:36,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502282129] [2022-11-16 12:27:36,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:36,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:27:36,791 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:27:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:27:36,834 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:27:36,834 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:27:36,836 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 12:27:36,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-16 12:27:36,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-16 12:27:36,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-16 12:27:36,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-16 12:27:36,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-16 12:27:36,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-16 12:27:36,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-16 12:27:36,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-16 12:27:36,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-16 12:27:36,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-16 12:27:36,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:27:36,842 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-16 12:27:36,845 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:27:36,845 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:27:36,905 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:27:36,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 182 transitions, 382 flow [2022-11-16 12:27:36,976 INFO L130 PetriNetUnfolder]: 31/301 cut-off events. [2022-11-16 12:27:36,976 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 12:27:36,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 301 events. 31/301 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1032 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 182. Up to 8 conditions per place. [2022-11-16 12:27:36,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 182 transitions, 382 flow [2022-11-16 12:27:36,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 182 transitions, 382 flow [2022-11-16 12:27:36,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:27:36,990 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;@747002f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:27:36,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-16 12:27:37,000 INFO L130 PetriNetUnfolder]: 2/54 cut-off events. [2022-11-16 12:27:37,000 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:27:37,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:37,001 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] [2022-11-16 12:27:37,001 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)] === [2022-11-16 12:27:37,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:37,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1953810764, now seen corresponding path program 1 times [2022-11-16 12:27:37,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:37,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967003123] [2022-11-16 12:27:37,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:37,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:37,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:37,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967003123] [2022-11-16 12:27:37,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967003123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:37,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:37,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:27:37,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143631743] [2022-11-16 12:27:37,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:37,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:27:37,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:37,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:27:37,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:27:37,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 182 [2022-11-16 12:27:37,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 182 transitions, 382 flow. Second operand has 2 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 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) [2022-11-16 12:27:37,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:37,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 182 [2022-11-16 12:27:37,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:37,126 INFO L130 PetriNetUnfolder]: 3/270 cut-off events. [2022-11-16 12:27:37,127 INFO L131 PetriNetUnfolder]: For 21/27 co-relation queries the response was YES. [2022-11-16 12:27:37,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 270 events. 3/270 cut-off events. For 21/27 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 750 event pairs, 0 based on Foata normal form. 42/287 useless extension candidates. Maximal degree in co-relation 166. Up to 7 conditions per place. [2022-11-16 12:27:37,129 INFO L137 encePairwiseOnDemand]: 165/182 looper letters, 4 selfloop transitions, 0 changer transitions 0/164 dead transitions. [2022-11-16 12:27:37,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 164 transitions, 354 flow [2022-11-16 12:27:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:27:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:27:37,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 341 transitions. [2022-11-16 12:27:37,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9368131868131868 [2022-11-16 12:27:37,133 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 341 transitions. [2022-11-16 12:27:37,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 341 transitions. [2022-11-16 12:27:37,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:37,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 341 transitions. [2022-11-16 12:27:37,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 170.5) internal successors, (341), 2 states have internal predecessors, (341), 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) [2022-11-16 12:27:37,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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) [2022-11-16 12:27:37,138 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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) [2022-11-16 12:27:37,138 INFO L175 Difference]: Start difference. First operand has 168 places, 182 transitions, 382 flow. Second operand 2 states and 341 transitions. [2022-11-16 12:27:37,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 164 transitions, 354 flow [2022-11-16 12:27:37,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 164 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:27:37,148 INFO L231 Difference]: Finished difference. Result has 168 places, 164 transitions, 346 flow [2022-11-16 12:27:37,149 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=346, PETRI_PLACES=168, PETRI_TRANSITIONS=164} [2022-11-16 12:27:37,151 INFO L288 CegarLoopForPetriNet]: 168 programPoint places, 0 predicate places. [2022-11-16 12:27:37,151 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 164 transitions, 346 flow [2022-11-16 12:27:37,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 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) [2022-11-16 12:27:37,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:37,152 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] [2022-11-16 12:27:37,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:27:37,153 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)] === [2022-11-16 12:27:37,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:37,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1066307083, now seen corresponding path program 1 times [2022-11-16 12:27:37,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:37,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793660205] [2022-11-16 12:27:37,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:37,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:37,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:37,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793660205] [2022-11-16 12:27:37,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793660205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:37,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:37,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:27:37,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009666150] [2022-11-16 12:27:37,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:37,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:27:37,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:37,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:27:37,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:27:37,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 182 [2022-11-16 12:27:37,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 164 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2022-11-16 12:27:37,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:37,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 182 [2022-11-16 12:27:37,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:37,337 INFO L130 PetriNetUnfolder]: 2/251 cut-off events. [2022-11-16 12:27:37,338 INFO L131 PetriNetUnfolder]: For 32/78 co-relation queries the response was YES. [2022-11-16 12:27:37,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 251 events. 2/251 cut-off events. For 32/78 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 626 event pairs, 0 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 282. Up to 16 conditions per place. [2022-11-16 12:27:37,340 INFO L137 encePairwiseOnDemand]: 179/182 looper letters, 13 selfloop transitions, 2 changer transitions 0/168 dead transitions. [2022-11-16 12:27:37,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 168 transitions, 384 flow [2022-11-16 12:27:37,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:27:37,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:27:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2022-11-16 12:27:37,343 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86996336996337 [2022-11-16 12:27:37,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2022-11-16 12:27:37,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2022-11-16 12:27:37,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:37,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2022-11-16 12:27:37,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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) [2022-11-16 12:27:37,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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) [2022-11-16 12:27:37,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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) [2022-11-16 12:27:37,349 INFO L175 Difference]: Start difference. First operand has 168 places, 164 transitions, 346 flow. Second operand 3 states and 475 transitions. [2022-11-16 12:27:37,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 168 transitions, 384 flow [2022-11-16 12:27:37,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 168 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:27:37,354 INFO L231 Difference]: Finished difference. Result has 171 places, 165 transitions, 358 flow [2022-11-16 12:27:37,354 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=171, PETRI_TRANSITIONS=165} [2022-11-16 12:27:37,355 INFO L288 CegarLoopForPetriNet]: 168 programPoint places, 3 predicate places. [2022-11-16 12:27:37,355 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 165 transitions, 358 flow [2022-11-16 12:27:37,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2022-11-16 12:27:37,356 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:37,356 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:37,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:27:37,357 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)] === [2022-11-16 12:27:37,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:37,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1991257521, now seen corresponding path program 1 times [2022-11-16 12:27:37,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:37,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438145585] [2022-11-16 12:27:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:37,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:37,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:37,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438145585] [2022-11-16 12:27:37,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438145585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:37,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:37,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:27:37,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777621915] [2022-11-16 12:27:37,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:37,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:27:37,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:37,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:27:37,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:27:37,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 182 [2022-11-16 12:27:37,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 165 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:37,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:37,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 182 [2022-11-16 12:27:37,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:39,126 INFO L130 PetriNetUnfolder]: 1375/7696 cut-off events. [2022-11-16 12:27:39,127 INFO L131 PetriNetUnfolder]: For 207/368 co-relation queries the response was YES. [2022-11-16 12:27:39,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10217 conditions, 7696 events. 1375/7696 cut-off events. For 207/368 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 83976 event pairs, 514 based on Foata normal form. 9/6619 useless extension candidates. Maximal degree in co-relation 10210. Up to 1414 conditions per place. [2022-11-16 12:27:39,199 INFO L137 encePairwiseOnDemand]: 163/182 looper letters, 42 selfloop transitions, 14 changer transitions 0/190 dead transitions. [2022-11-16 12:27:39,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 190 transitions, 531 flow [2022-11-16 12:27:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:27:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:27:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2022-11-16 12:27:39,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8424908424908425 [2022-11-16 12:27:39,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2022-11-16 12:27:39,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2022-11-16 12:27:39,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:39,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2022-11-16 12:27:39,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2022-11-16 12:27:39,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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) [2022-11-16 12:27:39,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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) [2022-11-16 12:27:39,210 INFO L175 Difference]: Start difference. First operand has 171 places, 165 transitions, 358 flow. Second operand 3 states and 460 transitions. [2022-11-16 12:27:39,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 190 transitions, 531 flow [2022-11-16 12:27:39,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 190 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:27:39,218 INFO L231 Difference]: Finished difference. Result has 174 places, 179 transitions, 478 flow [2022-11-16 12:27:39,218 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=174, PETRI_TRANSITIONS=179} [2022-11-16 12:27:39,219 INFO L288 CegarLoopForPetriNet]: 168 programPoint places, 6 predicate places. [2022-11-16 12:27:39,220 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 179 transitions, 478 flow [2022-11-16 12:27:39,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:39,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:39,221 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:39,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:27:39,222 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)] === [2022-11-16 12:27:39,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:39,222 INFO L85 PathProgramCache]: Analyzing trace with hash -265031934, now seen corresponding path program 1 times [2022-11-16 12:27:39,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:39,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668162798] [2022-11-16 12:27:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:39,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:39,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:39,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668162798] [2022-11-16 12:27:39,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668162798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:39,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:39,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:27:39,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836371126] [2022-11-16 12:27:39,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:39,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:27:39,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:39,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:27:39,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:27:39,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 182 [2022-11-16 12:27:39,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 179 transitions, 478 flow. Second operand 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) [2022-11-16 12:27:39,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:39,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 182 [2022-11-16 12:27:39,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:41,062 INFO L130 PetriNetUnfolder]: 1713/8183 cut-off events. [2022-11-16 12:27:41,063 INFO L131 PetriNetUnfolder]: For 2586/3018 co-relation queries the response was YES. [2022-11-16 12:27:41,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13942 conditions, 8183 events. 1713/8183 cut-off events. For 2586/3018 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 87394 event pairs, 781 based on Foata normal form. 17/7380 useless extension candidates. Maximal degree in co-relation 13934. Up to 2616 conditions per place. [2022-11-16 12:27:41,155 INFO L137 encePairwiseOnDemand]: 173/182 looper letters, 60 selfloop transitions, 14 changer transitions 0/206 dead transitions. [2022-11-16 12:27:41,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 206 transitions, 742 flow [2022-11-16 12:27:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:27:41,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:27:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2022-11-16 12:27:41,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8168498168498168 [2022-11-16 12:27:41,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2022-11-16 12:27:41,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2022-11-16 12:27:41,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:41,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2022-11-16 12:27:41,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:41,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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) [2022-11-16 12:27:41,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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) [2022-11-16 12:27:41,170 INFO L175 Difference]: Start difference. First operand has 174 places, 179 transitions, 478 flow. Second operand 3 states and 446 transitions. [2022-11-16 12:27:41,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 206 transitions, 742 flow [2022-11-16 12:27:41,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 206 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:27:41,187 INFO L231 Difference]: Finished difference. Result has 176 places, 191 transitions, 576 flow [2022-11-16 12:27:41,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=576, PETRI_PLACES=176, PETRI_TRANSITIONS=191} [2022-11-16 12:27:41,189 INFO L288 CegarLoopForPetriNet]: 168 programPoint places, 8 predicate places. [2022-11-16 12:27:41,189 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 191 transitions, 576 flow [2022-11-16 12:27:41,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-11-16 12:27:41,190 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:41,191 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:41,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:27:41,193 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)] === [2022-11-16 12:27:41,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:41,193 INFO L85 PathProgramCache]: Analyzing trace with hash 370973271, now seen corresponding path program 1 times [2022-11-16 12:27:41,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:41,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574928272] [2022-11-16 12:27:41,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:41,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:27:41,237 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:27:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:27:41,281 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:27:41,281 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:27:41,281 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-16 12:27:41,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-16 12:27:41,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-16 12:27:41,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-16 12:27:41,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-16 12:27:41,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-16 12:27:41,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-16 12:27:41,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-16 12:27:41,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-16 12:27:41,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-16 12:27:41,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-16 12:27:41,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-16 12:27:41,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-16 12:27:41,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-16 12:27:41,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-16 12:27:41,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:27:41,289 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 12:27:41,292 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:27:41,292 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 12:27:41,353 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:27:41,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 228 transitions, 486 flow [2022-11-16 12:27:41,482 INFO L130 PetriNetUnfolder]: 50/467 cut-off events. [2022-11-16 12:27:41,482 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 12:27:41,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 467 events. 50/467 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1765 event pairs, 1 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 309. Up to 16 conditions per place. [2022-11-16 12:27:41,489 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 228 transitions, 486 flow [2022-11-16 12:27:41,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 228 transitions, 486 flow [2022-11-16 12:27:41,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:27:41,506 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;@747002f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:27:41,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-16 12:27:41,514 INFO L130 PetriNetUnfolder]: 2/54 cut-off events. [2022-11-16 12:27:41,514 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:27:41,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:41,514 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] [2022-11-16 12:27:41,515 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)] === [2022-11-16 12:27:41,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:41,516 INFO L85 PathProgramCache]: Analyzing trace with hash -292556520, now seen corresponding path program 1 times [2022-11-16 12:27:41,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:41,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572057619] [2022-11-16 12:27:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:41,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:41,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:41,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572057619] [2022-11-16 12:27:41,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572057619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:41,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:41,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:27:41,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794161870] [2022-11-16 12:27:41,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:41,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:27:41,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:41,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:27:41,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:27:41,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 228 [2022-11-16 12:27:41,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 228 transitions, 486 flow. Second operand has 2 states, 2 states have (on average 198.5) internal successors, (397), 2 states have internal predecessors, (397), 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) [2022-11-16 12:27:41,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:41,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 228 [2022-11-16 12:27:41,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:41,692 INFO L130 PetriNetUnfolder]: 8/421 cut-off events. [2022-11-16 12:27:41,693 INFO L131 PetriNetUnfolder]: For 54/69 co-relation queries the response was YES. [2022-11-16 12:27:41,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 421 events. 8/421 cut-off events. For 54/69 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1471 event pairs, 1 based on Foata normal form. 104/485 useless extension candidates. Maximal degree in co-relation 284. Up to 16 conditions per place. [2022-11-16 12:27:41,700 INFO L137 encePairwiseOnDemand]: 205/228 looper letters, 6 selfloop transitions, 0 changer transitions 0/204 dead transitions. [2022-11-16 12:27:41,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 204 transitions, 450 flow [2022-11-16 12:27:41,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:27:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:27:41,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 425 transitions. [2022-11-16 12:27:41,703 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9320175438596491 [2022-11-16 12:27:41,704 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 425 transitions. [2022-11-16 12:27:41,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 425 transitions. [2022-11-16 12:27:41,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:41,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 425 transitions. [2022-11-16 12:27:41,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 212.5) internal successors, (425), 2 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:41,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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) [2022-11-16 12:27:41,709 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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) [2022-11-16 12:27:41,710 INFO L175 Difference]: Start difference. First operand has 209 places, 228 transitions, 486 flow. Second operand 2 states and 425 transitions. [2022-11-16 12:27:41,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 204 transitions, 450 flow [2022-11-16 12:27:41,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 204 transitions, 450 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:27:41,717 INFO L231 Difference]: Finished difference. Result has 209 places, 204 transitions, 438 flow [2022-11-16 12:27:41,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=438, PETRI_PLACES=209, PETRI_TRANSITIONS=204} [2022-11-16 12:27:41,722 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 0 predicate places. [2022-11-16 12:27:41,722 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 204 transitions, 438 flow [2022-11-16 12:27:41,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 198.5) internal successors, (397), 2 states have internal predecessors, (397), 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) [2022-11-16 12:27:41,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:41,723 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] [2022-11-16 12:27:41,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:27:41,724 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)] === [2022-11-16 12:27:41,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:41,725 INFO L85 PathProgramCache]: Analyzing trace with hash 594947161, now seen corresponding path program 1 times [2022-11-16 12:27:41,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:41,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457280013] [2022-11-16 12:27:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:41,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:41,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:41,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457280013] [2022-11-16 12:27:41,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457280013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:41,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:41,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:27:41,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133227190] [2022-11-16 12:27:41,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:41,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:27:41,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:41,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:27:41,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:27:41,800 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 228 [2022-11-16 12:27:41,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 204 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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) [2022-11-16 12:27:41,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:41,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 228 [2022-11-16 12:27:41,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:41,949 INFO L130 PetriNetUnfolder]: 7/402 cut-off events. [2022-11-16 12:27:41,949 INFO L131 PetriNetUnfolder]: For 67/162 co-relation queries the response was YES. [2022-11-16 12:27:41,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 402 events. 7/402 cut-off events. For 67/162 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1364 event pairs, 1 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 460. Up to 30 conditions per place. [2022-11-16 12:27:41,955 INFO L137 encePairwiseOnDemand]: 225/228 looper letters, 15 selfloop transitions, 2 changer transitions 0/208 dead transitions. [2022-11-16 12:27:41,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 208 transitions, 480 flow [2022-11-16 12:27:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:27:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:27:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-11-16 12:27:41,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8640350877192983 [2022-11-16 12:27:41,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-11-16 12:27:41,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-11-16 12:27:41,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:41,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-11-16 12:27:41,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2022-11-16 12:27:41,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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) [2022-11-16 12:27:41,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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) [2022-11-16 12:27:41,966 INFO L175 Difference]: Start difference. First operand has 209 places, 204 transitions, 438 flow. Second operand 3 states and 591 transitions. [2022-11-16 12:27:41,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 208 transitions, 480 flow [2022-11-16 12:27:41,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 208 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:27:42,012 INFO L231 Difference]: Finished difference. Result has 212 places, 205 transitions, 450 flow [2022-11-16 12:27:42,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=212, PETRI_TRANSITIONS=205} [2022-11-16 12:27:42,014 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 3 predicate places. [2022-11-16 12:27:42,014 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 205 transitions, 450 flow [2022-11-16 12:27:42,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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) [2022-11-16 12:27:42,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:42,014 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:42,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:27:42,015 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)] === [2022-11-16 12:27:42,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:42,015 INFO L85 PathProgramCache]: Analyzing trace with hash 399763295, now seen corresponding path program 1 times [2022-11-16 12:27:42,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:42,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740157167] [2022-11-16 12:27:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:42,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:42,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:42,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740157167] [2022-11-16 12:27:42,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740157167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:42,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:42,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:27:42,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287785800] [2022-11-16 12:27:42,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:42,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:27:42,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:42,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:27:42,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:27:42,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 228 [2022-11-16 12:27:42,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 205 transitions, 450 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2022-11-16 12:27:42,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:42,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 228 [2022-11-16 12:27:42,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:01,774 INFO L130 PetriNetUnfolder]: 35161/121422 cut-off events. [2022-11-16 12:28:01,774 INFO L131 PetriNetUnfolder]: For 5243/8310 co-relation queries the response was YES. [2022-11-16 12:28:02,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175037 conditions, 121422 events. 35161/121422 cut-off events. For 5243/8310 co-relation queries the response was YES. Maximal size of possible extension queue 2970. Compared 1820577 event pairs, 14664 based on Foata normal form. 59/102140 useless extension candidates. Maximal degree in co-relation 175029. Up to 29486 conditions per place. [2022-11-16 12:28:03,084 INFO L137 encePairwiseOnDemand]: 201/228 looper letters, 62 selfloop transitions, 20 changer transitions 0/242 dead transitions. [2022-11-16 12:28:03,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 242 transitions, 709 flow [2022-11-16 12:28:03,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:28:03,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:28:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2022-11-16 12:28:03,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.827485380116959 [2022-11-16 12:28:03,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2022-11-16 12:28:03,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2022-11-16 12:28:03,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:03,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2022-11-16 12:28:03,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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) [2022-11-16 12:28:03,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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) [2022-11-16 12:28:03,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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) [2022-11-16 12:28:03,094 INFO L175 Difference]: Start difference. First operand has 212 places, 205 transitions, 450 flow. Second operand 3 states and 566 transitions. [2022-11-16 12:28:03,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 242 transitions, 709 flow [2022-11-16 12:28:03,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 242 transitions, 707 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:28:03,106 INFO L231 Difference]: Finished difference. Result has 215 places, 225 transitions, 622 flow [2022-11-16 12:28:03,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=215, PETRI_TRANSITIONS=225} [2022-11-16 12:28:03,110 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 6 predicate places. [2022-11-16 12:28:03,110 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 225 transitions, 622 flow [2022-11-16 12:28:03,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2022-11-16 12:28:03,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:03,111 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:03,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:28:03,112 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)] === [2022-11-16 12:28:03,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:03,112 INFO L85 PathProgramCache]: Analyzing trace with hash -683936210, now seen corresponding path program 1 times [2022-11-16 12:28:03,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:03,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881781014] [2022-11-16 12:28:03,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:03,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:03,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:03,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881781014] [2022-11-16 12:28:03,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881781014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:03,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:03,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:28:03,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127554507] [2022-11-16 12:28:03,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:03,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:28:03,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:03,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:28:03,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:28:03,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 228 [2022-11-16 12:28:03,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 225 transitions, 622 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2022-11-16 12:28:03,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:03,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 228 [2022-11-16 12:28:03,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:21,741 INFO L130 PetriNetUnfolder]: 44875/139834 cut-off events. [2022-11-16 12:28:21,741 INFO L131 PetriNetUnfolder]: For 59386/65509 co-relation queries the response was YES. [2022-11-16 12:28:22,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266832 conditions, 139834 events. 44875/139834 cut-off events. For 59386/65509 co-relation queries the response was YES. Maximal size of possible extension queue 3275. Compared 2050476 event pairs, 21503 based on Foata normal form. 247/124590 useless extension candidates. Maximal degree in co-relation 266823. Up to 58501 conditions per place. [2022-11-16 12:28:22,945 INFO L137 encePairwiseOnDemand]: 215/228 looper letters, 92 selfloop transitions, 22 changer transitions 0/272 dead transitions. [2022-11-16 12:28:22,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 272 transitions, 1056 flow [2022-11-16 12:28:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:28:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:28:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2022-11-16 12:28:22,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8070175438596491 [2022-11-16 12:28:22,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2022-11-16 12:28:22,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2022-11-16 12:28:22,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:22,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2022-11-16 12:28:22,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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) [2022-11-16 12:28:22,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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) [2022-11-16 12:28:22,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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) [2022-11-16 12:28:22,953 INFO L175 Difference]: Start difference. First operand has 215 places, 225 transitions, 622 flow. Second operand 3 states and 552 transitions. [2022-11-16 12:28:22,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 272 transitions, 1056 flow [2022-11-16 12:28:23,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 272 transitions, 988 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:28:23,048 INFO L231 Difference]: Finished difference. Result has 217 places, 245 transitions, 788 flow [2022-11-16 12:28:23,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=788, PETRI_PLACES=217, PETRI_TRANSITIONS=245} [2022-11-16 12:28:23,050 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 8 predicate places. [2022-11-16 12:28:23,050 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 245 transitions, 788 flow [2022-11-16 12:28:23,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2022-11-16 12:28:23,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:23,051 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:23,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:28:23,052 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)] === [2022-11-16 12:28:23,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:23,052 INFO L85 PathProgramCache]: Analyzing trace with hash 50429552, now seen corresponding path program 1 times [2022-11-16 12:28:23,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:23,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661540704] [2022-11-16 12:28:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:23,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:28:23,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:23,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661540704] [2022-11-16 12:28:23,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661540704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:23,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:23,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:28:23,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103595236] [2022-11-16 12:28:23,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:23,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:28:23,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:23,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:28:23,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:28:23,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 228 [2022-11-16 12:28:23,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 245 transitions, 788 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 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) [2022-11-16 12:28:23,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:23,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 228 [2022-11-16 12:28:23,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand