./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs-b.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_cdbe0031-f108-461d-b274-bf145c76a194/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbe0031-f108-461d-b274-bf145c76a194/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_cdbe0031-f108-461d-b274-bf145c76a194/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbe0031-f108-461d-b274-bf145c76a194/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbe0031-f108-461d-b274-bf145c76a194/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_cdbe0031-f108-461d-b274-bf145c76a194/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 8f6daa714ad29a28643c70bea2be7f060091d3c3adf6e85890e4056205fd8d77 --- 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 11:03:10,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:03:10,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:03:10,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:03:10,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:03:10,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:03:10,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:03:10,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:03:10,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:03:10,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:03:10,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:03:10,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:03:10,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:03:10,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:03:10,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:03:10,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:03:10,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:03:10,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:03:10,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:03:10,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:03:10,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:03:10,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:03:10,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:03:10,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:03:10,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:03:10,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:03:10,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:03:10,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:03:10,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:03:10,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:03:10,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:03:10,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:03:10,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:03:10,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:03:10,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:03:10,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:03:10,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:03:10,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:03:10,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:03:10,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:03:10,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:03:10,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbe0031-f108-461d-b274-bf145c76a194/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 11:03:10,933 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:03:10,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:03:10,934 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:03:10,934 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:03:10,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:03:10,935 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:03:10,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:03:10,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:03:10,936 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:03:10,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:03:10,938 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:03:10,938 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:03:10,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:03:10,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:03:10,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:03:10,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:03:10,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:03:10,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:03:10,940 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 11:03:10,940 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:03:10,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:03:10,941 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:03:10,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:03:10,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:03:10,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:03:10,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:03:10,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:03:10,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:03:10,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:03:10,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:03:10,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:03:10,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:03:10,944 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:03:10,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:03:10,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:03:10,945 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_cdbe0031-f108-461d-b274-bf145c76a194/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbe0031-f108-461d-b274-bf145c76a194/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f6daa714ad29a28643c70bea2be7f060091d3c3adf6e85890e4056205fd8d77 [2022-11-16 11:03:11,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:03:11,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:03:11,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:03:11,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:03:11,297 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:03:11,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbe0031-f108-461d-b274-bf145c76a194/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs-b.i [2022-11-16 11:03:11,373 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbe0031-f108-461d-b274-bf145c76a194/bin/uautomizer-tPACEb0tL8/data/411876f31/50080bc743fe468a8ee5066436663772/FLAGfbf84eefb [2022-11-16 11:03:11,860 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:03:11,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbe0031-f108-461d-b274-bf145c76a194/sv-benchmarks/c/pthread-ext/45_monabsex1_vs-b.i [2022-11-16 11:03:11,889 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbe0031-f108-461d-b274-bf145c76a194/bin/uautomizer-tPACEb0tL8/data/411876f31/50080bc743fe468a8ee5066436663772/FLAGfbf84eefb [2022-11-16 11:03:12,215 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbe0031-f108-461d-b274-bf145c76a194/bin/uautomizer-tPACEb0tL8/data/411876f31/50080bc743fe468a8ee5066436663772 [2022-11-16 11:03:12,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:03:12,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:03:12,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:03:12,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:03:12,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:03:12,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:03:12" (1/1) ... [2022-11-16 11:03:12,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a1846f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:12, skipping insertion in model container [2022-11-16 11:03:12,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:03:12" (1/1) ... [2022-11-16 11:03:12,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:03:12,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:03:12,715 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_cdbe0031-f108-461d-b274-bf145c76a194/sv-benchmarks/c/pthread-ext/45_monabsex1_vs-b.i[30010,30023] [2022-11-16 11:03:12,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:03:12,732 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:03:12,774 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_cdbe0031-f108-461d-b274-bf145c76a194/sv-benchmarks/c/pthread-ext/45_monabsex1_vs-b.i[30010,30023] [2022-11-16 11:03:12,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:03:12,809 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:03:12,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:12 WrapperNode [2022-11-16 11:03:12,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:03:12,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:03:12,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:03:12,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:03:12,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:12" (1/1) ... [2022-11-16 11:03:12,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:12" (1/1) ... [2022-11-16 11:03:12,869 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2022-11-16 11:03:12,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:03:12,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:03:12,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:03:12,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:03:12,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:12" (1/1) ... [2022-11-16 11:03:12,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:12" (1/1) ... [2022-11-16 11:03:12,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:12" (1/1) ... [2022-11-16 11:03:12,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:12" (1/1) ... [2022-11-16 11:03:12,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:12" (1/1) ... [2022-11-16 11:03:12,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:12" (1/1) ... [2022-11-16 11:03:12,905 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:12" (1/1) ... [2022-11-16 11:03:12,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:12" (1/1) ... [2022-11-16 11:03:12,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:03:12,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:03:12,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:03:12,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:03:12,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:12" (1/1) ... [2022-11-16 11:03:12,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:03:12,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbe0031-f108-461d-b274-bf145c76a194/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:03:12,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbe0031-f108-461d-b274-bf145c76a194/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:03:12,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbe0031-f108-461d-b274-bf145c76a194/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:03:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-16 11:03:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-16 11:03:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:03:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:03:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:03:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:03:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:03:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:03:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:03:12,986 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 11:03:13,112 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:03:13,113 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:03:13,252 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:03:13,257 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:03:13,258 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:03:13,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:03:13 BoogieIcfgContainer [2022-11-16 11:03:13,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:03:13,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:03:13,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:03:13,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:03:13,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:03:12" (1/3) ... [2022-11-16 11:03:13,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f6c740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:03:13, skipping insertion in model container [2022-11-16 11:03:13,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:03:12" (2/3) ... [2022-11-16 11:03:13,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f6c740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:03:13, skipping insertion in model container [2022-11-16 11:03:13,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:03:13" (3/3) ... [2022-11-16 11:03:13,279 INFO L112 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs-b.i [2022-11-16 11:03:13,288 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:03:13,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:03:13,299 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-16 11:03:13,299 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:03:13,365 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:03:13,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 119 flow [2022-11-16 11:03:13,471 INFO L130 PetriNetUnfolder]: 3/68 cut-off events. [2022-11-16 11:03:13,474 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:03:13,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 68 events. 3/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 33. Up to 4 conditions per place. [2022-11-16 11:03:13,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 57 transitions, 119 flow [2022-11-16 11:03:13,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 57 transitions, 119 flow [2022-11-16 11:03:13,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:03:13,510 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;@630338b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:03:13,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-16 11:03:13,530 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2022-11-16 11:03:13,530 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:03:13,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:13,532 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:13,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 11:03:13,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash -588854966, now seen corresponding path program 1 times [2022-11-16 11:03:13,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:13,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898976676] [2022-11-16 11:03:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:13,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,808 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 11:03:13,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:13,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898976676] [2022-11-16 11:03:13,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898976676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:13,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:13,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:03:13,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319984108] [2022-11-16 11:03:13,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:13,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:13,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:13,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:13,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:13,866 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 57 [2022-11-16 11:03:13,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 11:03:13,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:13,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 57 [2022-11-16 11:03:13,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:13,947 INFO L130 PetriNetUnfolder]: 0/51 cut-off events. [2022-11-16 11:03:13,947 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:03:13,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 51 events. 0/51 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs, 0 based on Foata normal form. 9/57 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2022-11-16 11:03:13,949 INFO L137 encePairwiseOnDemand]: 51/57 looper letters, 10 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2022-11-16 11:03:13,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 123 flow [2022-11-16 11:03:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2022-11-16 11:03:13,965 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7953216374269005 [2022-11-16 11:03:13,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 136 transitions. [2022-11-16 11:03:13,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 136 transitions. [2022-11-16 11:03:13,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:13,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 136 transitions. [2022-11-16 11:03:13,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 11:03:13,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 11:03:13,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 11:03:13,988 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 119 flow. Second operand 3 states and 136 transitions. [2022-11-16 11:03:13,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 123 flow [2022-11-16 11:03:13,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 123 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:03:13,999 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 103 flow [2022-11-16 11:03:14,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2022-11-16 11:03:14,006 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -6 predicate places. [2022-11-16 11:03:14,006 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 103 flow [2022-11-16 11:03:14,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 11:03:14,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:14,008 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] [2022-11-16 11:03:14,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:03:14,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 11:03:14,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:14,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1758601162, now seen corresponding path program 1 times [2022-11-16 11:03:14,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:14,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876360654] [2022-11-16 11:03:14,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:14,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:03:14,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:03:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:03:14,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:03:14,084 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:03:14,086 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-16 11:03:14,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2022-11-16 11:03:14,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2022-11-16 11:03:14,088 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2022-11-16 11:03:14,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2022-11-16 11:03:14,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2022-11-16 11:03:14,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:03:14,090 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:03:14,092 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:03:14,092 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:03:14,114 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:03:14,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 78 transitions, 168 flow [2022-11-16 11:03:14,134 INFO L130 PetriNetUnfolder]: 5/102 cut-off events. [2022-11-16 11:03:14,135 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:03:14,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 102 events. 5/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 159 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2022-11-16 11:03:14,136 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 78 transitions, 168 flow [2022-11-16 11:03:14,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 78 transitions, 168 flow [2022-11-16 11:03:14,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:03:14,140 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;@630338b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:03:14,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 11:03:14,144 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2022-11-16 11:03:14,144 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:03:14,144 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:14,144 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:14,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 11:03:14,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:14,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1925488374, now seen corresponding path program 1 times [2022-11-16 11:03:14,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:14,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649734764] [2022-11-16 11:03:14,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:14,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:14,189 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 11:03:14,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:14,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649734764] [2022-11-16 11:03:14,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649734764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:14,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:14,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:03:14,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647522334] [2022-11-16 11:03:14,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:14,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:14,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:14,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:14,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:14,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 78 [2022-11-16 11:03:14,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 11:03:14,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:14,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 78 [2022-11-16 11:03:14,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:14,279 INFO L130 PetriNetUnfolder]: 42/214 cut-off events. [2022-11-16 11:03:14,279 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-16 11:03:14,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 214 events. 42/214 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 843 event pairs, 42 based on Foata normal form. 70/238 useless extension candidates. Maximal degree in co-relation 195. Up to 102 conditions per place. [2022-11-16 11:03:14,282 INFO L137 encePairwiseOnDemand]: 71/78 looper letters, 17 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-11-16 11:03:14,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 182 flow [2022-11-16 11:03:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:14,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2022-11-16 11:03:14,284 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7692307692307693 [2022-11-16 11:03:14,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 180 transitions. [2022-11-16 11:03:14,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 180 transitions. [2022-11-16 11:03:14,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:14,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 180 transitions. [2022-11-16 11:03:14,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 11:03:14,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:14,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:14,288 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 168 flow. Second operand 3 states and 180 transitions. [2022-11-16 11:03:14,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 182 flow [2022-11-16 11:03:14,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 180 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-16 11:03:14,291 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 146 flow [2022-11-16 11:03:14,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2022-11-16 11:03:14,292 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, -7 predicate places. [2022-11-16 11:03:14,292 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 146 flow [2022-11-16 11:03:14,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 11:03:14,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:14,293 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:14,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:03:14,293 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 11:03:14,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:14,294 INFO L85 PathProgramCache]: Analyzing trace with hash -335708699, now seen corresponding path program 1 times [2022-11-16 11:03:14,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:14,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58129774] [2022-11-16 11:03:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:14,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:14,367 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 11:03:14,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:14,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58129774] [2022-11-16 11:03:14,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58129774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:14,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:14,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:03:14,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689630801] [2022-11-16 11:03:14,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:14,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:14,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:14,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:14,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:14,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 78 [2022-11-16 11:03:14,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 11:03:14,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:14,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 78 [2022-11-16 11:03:14,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:14,525 INFO L130 PetriNetUnfolder]: 64/249 cut-off events. [2022-11-16 11:03:14,525 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-16 11:03:14,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 249 events. 64/249 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1026 event pairs, 39 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 402. Up to 117 conditions per place. [2022-11-16 11:03:14,528 INFO L137 encePairwiseOnDemand]: 72/78 looper letters, 22 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2022-11-16 11:03:14,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 75 transitions, 223 flow [2022-11-16 11:03:14,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:14,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:14,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2022-11-16 11:03:14,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2022-11-16 11:03:14,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 187 transitions. [2022-11-16 11:03:14,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 187 transitions. [2022-11-16 11:03:14,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:14,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 187 transitions. [2022-11-16 11:03:14,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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 11:03:14,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:14,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:14,541 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 146 flow. Second operand 3 states and 187 transitions. [2022-11-16 11:03:14,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 75 transitions, 223 flow [2022-11-16 11:03:14,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 75 transitions, 219 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:03:14,559 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 180 flow [2022-11-16 11:03:14,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2022-11-16 11:03:14,561 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, -5 predicate places. [2022-11-16 11:03:14,561 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 180 flow [2022-11-16 11:03:14,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 11:03:14,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:14,562 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] [2022-11-16 11:03:14,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:03:14,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 11:03:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:14,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1881244647, now seen corresponding path program 1 times [2022-11-16 11:03:14,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:14,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362107335] [2022-11-16 11:03:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:14,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:14,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:14,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362107335] [2022-11-16 11:03:14,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362107335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:14,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:14,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:03:14,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347155538] [2022-11-16 11:03:14,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:14,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:14,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:14,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:14,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:14,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 78 [2022-11-16 11:03:14,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 11:03:14,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:14,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 78 [2022-11-16 11:03:14,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:14,762 INFO L130 PetriNetUnfolder]: 43/250 cut-off events. [2022-11-16 11:03:14,762 INFO L131 PetriNetUnfolder]: For 75/80 co-relation queries the response was YES. [2022-11-16 11:03:14,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 250 events. 43/250 cut-off events. For 75/80 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1077 event pairs, 16 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 205. Up to 59 conditions per place. [2022-11-16 11:03:14,765 INFO L137 encePairwiseOnDemand]: 70/78 looper letters, 24 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2022-11-16 11:03:14,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 82 transitions, 287 flow [2022-11-16 11:03:14,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:14,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2022-11-16 11:03:14,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8290598290598291 [2022-11-16 11:03:14,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 194 transitions. [2022-11-16 11:03:14,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 194 transitions. [2022-11-16 11:03:14,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:14,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 194 transitions. [2022-11-16 11:03:14,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 11:03:14,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:14,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:14,770 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 180 flow. Second operand 3 states and 194 transitions. [2022-11-16 11:03:14,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 82 transitions, 287 flow [2022-11-16 11:03:14,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 273 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:03:14,773 INFO L231 Difference]: Finished difference. Result has 77 places, 76 transitions, 232 flow [2022-11-16 11:03:14,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=77, PETRI_TRANSITIONS=76} [2022-11-16 11:03:14,774 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, -3 predicate places. [2022-11-16 11:03:14,775 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 76 transitions, 232 flow [2022-11-16 11:03:14,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 11:03:14,775 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:14,775 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-16 11:03:14,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:03:14,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 11:03:14,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:14,776 INFO L85 PathProgramCache]: Analyzing trace with hash 409629695, now seen corresponding path program 1 times [2022-11-16 11:03:14,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:14,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552522540] [2022-11-16 11:03:14,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:14,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:03:14,807 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:03:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:03:14,832 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:03:14,832 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:03:14,832 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-11-16 11:03:14,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2022-11-16 11:03:14,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2022-11-16 11:03:14,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2022-11-16 11:03:14,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2022-11-16 11:03:14,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2022-11-16 11:03:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2022-11-16 11:03:14,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2022-11-16 11:03:14,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:03:14,834 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-16 11:03:14,835 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:03:14,835 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:03:14,876 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:03:14,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 99 transitions, 219 flow [2022-11-16 11:03:14,918 INFO L130 PetriNetUnfolder]: 7/136 cut-off events. [2022-11-16 11:03:14,918 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 11:03:14,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 136 events. 7/136 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 271 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 106. Up to 8 conditions per place. [2022-11-16 11:03:14,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 99 transitions, 219 flow [2022-11-16 11:03:14,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 99 transitions, 219 flow [2022-11-16 11:03:14,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:03:14,924 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;@630338b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:03:14,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-16 11:03:14,927 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2022-11-16 11:03:14,927 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:03:14,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:14,928 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:14,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-16 11:03:14,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:14,929 INFO L85 PathProgramCache]: Analyzing trace with hash 12218474, now seen corresponding path program 1 times [2022-11-16 11:03:14,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:14,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750591575] [2022-11-16 11:03:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:14,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:14,957 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 11:03:14,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:14,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750591575] [2022-11-16 11:03:14,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750591575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:14,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:14,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:03:14,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170655926] [2022-11-16 11:03:14,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:14,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:14,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:14,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:14,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:14,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2022-11-16 11:03:14,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 99 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 11:03:14,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:14,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2022-11-16 11:03:14,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:15,316 INFO L130 PetriNetUnfolder]: 630/1594 cut-off events. [2022-11-16 11:03:15,316 INFO L131 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2022-11-16 11:03:15,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2879 conditions, 1594 events. 630/1594 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11228 event pairs, 630 based on Foata normal form. 544/1686 useless extension candidates. Maximal degree in co-relation 363. Up to 1033 conditions per place. [2022-11-16 11:03:15,333 INFO L137 encePairwiseOnDemand]: 91/99 looper letters, 24 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2022-11-16 11:03:15,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 85 transitions, 243 flow [2022-11-16 11:03:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:15,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2022-11-16 11:03:15,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7542087542087542 [2022-11-16 11:03:15,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2022-11-16 11:03:15,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2022-11-16 11:03:15,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:15,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2022-11-16 11:03:15,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 11:03:15,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 11:03:15,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 11:03:15,339 INFO L175 Difference]: Start difference. First operand has 102 places, 99 transitions, 219 flow. Second operand 3 states and 224 transitions. [2022-11-16 11:03:15,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 85 transitions, 243 flow [2022-11-16 11:03:15,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 85 transitions, 237 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-16 11:03:15,342 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 189 flow [2022-11-16 11:03:15,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2022-11-16 11:03:15,343 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, -8 predicate places. [2022-11-16 11:03:15,343 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 189 flow [2022-11-16 11:03:15,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 11:03:15,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:15,344 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:15,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:03:15,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-16 11:03:15,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:15,345 INFO L85 PathProgramCache]: Analyzing trace with hash -836465068, now seen corresponding path program 1 times [2022-11-16 11:03:15,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:15,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723523060] [2022-11-16 11:03:15,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:15,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:15,381 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 11:03:15,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:15,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723523060] [2022-11-16 11:03:15,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723523060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:15,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:15,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:03:15,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30163418] [2022-11-16 11:03:15,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:15,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:15,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:15,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:15,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 99 [2022-11-16 11:03:15,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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 11:03:15,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:15,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 99 [2022-11-16 11:03:15,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:15,749 INFO L130 PetriNetUnfolder]: 1007/2221 cut-off events. [2022-11-16 11:03:15,749 INFO L131 PetriNetUnfolder]: For 248/248 co-relation queries the response was YES. [2022-11-16 11:03:15,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4111 conditions, 2221 events. 1007/2221 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15654 event pairs, 696 based on Foata normal form. 0/1635 useless extension candidates. Maximal degree in co-relation 4081. Up to 1324 conditions per place. [2022-11-16 11:03:15,771 INFO L137 encePairwiseOnDemand]: 91/99 looper letters, 34 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2022-11-16 11:03:15,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 101 transitions, 313 flow [2022-11-16 11:03:15,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2022-11-16 11:03:15,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.797979797979798 [2022-11-16 11:03:15,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2022-11-16 11:03:15,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2022-11-16 11:03:15,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:15,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2022-11-16 11:03:15,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 11:03:15,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 11:03:15,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 11:03:15,777 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 189 flow. Second operand 3 states and 237 transitions. [2022-11-16 11:03:15,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 101 transitions, 313 flow [2022-11-16 11:03:15,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 101 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:03:15,785 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 239 flow [2022-11-16 11:03:15,785 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2022-11-16 11:03:15,787 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, -6 predicate places. [2022-11-16 11:03:15,788 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 239 flow [2022-11-16 11:03:15,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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 11:03:15,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:15,788 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] [2022-11-16 11:03:15,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:03:15,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-16 11:03:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:15,789 INFO L85 PathProgramCache]: Analyzing trace with hash 269773083, now seen corresponding path program 1 times [2022-11-16 11:03:15,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:15,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751663758] [2022-11-16 11:03:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:15,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:15,867 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 11:03:15,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:15,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751663758] [2022-11-16 11:03:15,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751663758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:15,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:15,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:03:15,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028465365] [2022-11-16 11:03:15,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:15,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:15,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:15,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:15,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:15,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2022-11-16 11:03:15,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 11:03:15,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:15,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2022-11-16 11:03:15,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:16,320 INFO L130 PetriNetUnfolder]: 952/2520 cut-off events. [2022-11-16 11:03:16,320 INFO L131 PetriNetUnfolder]: For 1017/1116 co-relation queries the response was YES. [2022-11-16 11:03:16,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5295 conditions, 2520 events. 952/2520 cut-off events. For 1017/1116 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 20210 event pairs, 351 based on Foata normal form. 5/2024 useless extension candidates. Maximal degree in co-relation 2750. Up to 818 conditions per place. [2022-11-16 11:03:16,345 INFO L137 encePairwiseOnDemand]: 87/99 looper letters, 37 selfloop transitions, 13 changer transitions 0/113 dead transitions. [2022-11-16 11:03:16,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 113 transitions, 429 flow [2022-11-16 11:03:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2022-11-16 11:03:16,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8215488215488216 [2022-11-16 11:03:16,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2022-11-16 11:03:16,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2022-11-16 11:03:16,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:16,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2022-11-16 11:03:16,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 11:03:16,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 11:03:16,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 11:03:16,350 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 239 flow. Second operand 3 states and 244 transitions. [2022-11-16 11:03:16,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 113 transitions, 429 flow [2022-11-16 11:03:16,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 113 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:03:16,361 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 353 flow [2022-11-16 11:03:16,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=353, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2022-11-16 11:03:16,363 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, -4 predicate places. [2022-11-16 11:03:16,363 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 353 flow [2022-11-16 11:03:16,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 11:03:16,364 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:16,364 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] [2022-11-16 11:03:16,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:03:16,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-16 11:03:16,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:16,366 INFO L85 PathProgramCache]: Analyzing trace with hash 901845396, now seen corresponding path program 1 times [2022-11-16 11:03:16,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:16,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038563196] [2022-11-16 11:03:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:16,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:16,437 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 11:03:16,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:16,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038563196] [2022-11-16 11:03:16,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038563196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:16,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:16,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:03:16,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580354312] [2022-11-16 11:03:16,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:16,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:16,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:16,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:16,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:16,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 99 [2022-11-16 11:03:16,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 11:03:16,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:16,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 99 [2022-11-16 11:03:16,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:16,966 INFO L130 PetriNetUnfolder]: 1364/3193 cut-off events. [2022-11-16 11:03:16,966 INFO L131 PetriNetUnfolder]: For 2607/2654 co-relation queries the response was YES. [2022-11-16 11:03:16,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8266 conditions, 3193 events. 1364/3193 cut-off events. For 2607/2654 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 25023 event pairs, 503 based on Foata normal form. 1/2724 useless extension candidates. Maximal degree in co-relation 4497. Up to 1834 conditions per place. [2022-11-16 11:03:17,009 INFO L137 encePairwiseOnDemand]: 91/99 looper letters, 51 selfloop transitions, 16 changer transitions 0/128 dead transitions. [2022-11-16 11:03:17,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 128 transitions, 608 flow [2022-11-16 11:03:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:17,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2022-11-16 11:03:17,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7946127946127947 [2022-11-16 11:03:17,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2022-11-16 11:03:17,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2022-11-16 11:03:17,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:17,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2022-11-16 11:03:17,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 11:03:17,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 11:03:17,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 11:03:17,014 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 353 flow. Second operand 3 states and 236 transitions. [2022-11-16 11:03:17,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 128 transitions, 608 flow [2022-11-16 11:03:17,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 128 transitions, 568 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:03:17,024 INFO L231 Difference]: Finished difference. Result has 100 places, 116 transitions, 477 flow [2022-11-16 11:03:17,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=100, PETRI_TRANSITIONS=116} [2022-11-16 11:03:17,025 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, -2 predicate places. [2022-11-16 11:03:17,025 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 116 transitions, 477 flow [2022-11-16 11:03:17,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 11:03:17,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:17,025 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:17,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:03:17,026 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-16 11:03:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1854629190, now seen corresponding path program 1 times [2022-11-16 11:03:17,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:17,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938988759] [2022-11-16 11:03:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:03:17,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:03:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:03:17,054 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:03:17,054 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:03:17,055 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-16 11:03:17,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2022-11-16 11:03:17,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2022-11-16 11:03:17,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2022-11-16 11:03:17,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2022-11-16 11:03:17,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2022-11-16 11:03:17,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2022-11-16 11:03:17,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2022-11-16 11:03:17,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2022-11-16 11:03:17,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2022-11-16 11:03:17,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:03:17,057 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 11:03:17,058 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:03:17,058 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 11:03:17,079 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:03:17,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 120 transitions, 272 flow [2022-11-16 11:03:17,100 INFO L130 PetriNetUnfolder]: 9/170 cut-off events. [2022-11-16 11:03:17,100 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-16 11:03:17,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 170 events. 9/170 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 372 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 144. Up to 10 conditions per place. [2022-11-16 11:03:17,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 120 transitions, 272 flow [2022-11-16 11:03:17,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 120 transitions, 272 flow [2022-11-16 11:03:17,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:03:17,105 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;@630338b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:03:17,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-16 11:03:17,107 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2022-11-16 11:03:17,107 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:03:17,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:17,108 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:17,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-16 11:03:17,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:17,108 INFO L85 PathProgramCache]: Analyzing trace with hash 929298282, now seen corresponding path program 1 times [2022-11-16 11:03:17,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:17,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829900691] [2022-11-16 11:03:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:17,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:17,126 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 11:03:17,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:17,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829900691] [2022-11-16 11:03:17,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829900691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:17,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:17,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:03:17,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021097003] [2022-11-16 11:03:17,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:17,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:17,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:17,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:17,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:17,129 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 120 [2022-11-16 11:03:17,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 120 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 11:03:17,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:17,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 120 [2022-11-16 11:03:17,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:19,595 INFO L130 PetriNetUnfolder]: 6804/13257 cut-off events. [2022-11-16 11:03:19,596 INFO L131 PetriNetUnfolder]: For 4094/4094 co-relation queries the response was YES. [2022-11-16 11:03:19,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25038 conditions, 13257 events. 6804/13257 cut-off events. For 4094/4094 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 117799 event pairs, 6804 based on Foata normal form. 4203/13473 useless extension candidates. Maximal degree in co-relation 2916. Up to 9608 conditions per place. [2022-11-16 11:03:19,857 INFO L137 encePairwiseOnDemand]: 111/120 looper letters, 31 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2022-11-16 11:03:19,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 104 transitions, 306 flow [2022-11-16 11:03:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2022-11-16 11:03:19,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2022-11-16 11:03:19,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2022-11-16 11:03:19,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2022-11-16 11:03:19,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:19,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2022-11-16 11:03:19,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 11:03:19,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 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 11:03:19,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 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 11:03:19,862 INFO L175 Difference]: Start difference. First operand has 124 places, 120 transitions, 272 flow. Second operand 3 states and 268 transitions. [2022-11-16 11:03:19,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 104 transitions, 306 flow [2022-11-16 11:03:19,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 104 transitions, 294 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-16 11:03:19,866 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 232 flow [2022-11-16 11:03:19,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2022-11-16 11:03:19,868 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, -9 predicate places. [2022-11-16 11:03:19,868 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 232 flow [2022-11-16 11:03:19,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 11:03:19,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:19,872 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:19,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:03:19,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-16 11:03:19,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:19,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1391510452, now seen corresponding path program 1 times [2022-11-16 11:03:19,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:19,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540320547] [2022-11-16 11:03:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:19,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:19,929 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 11:03:19,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:19,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540320547] [2022-11-16 11:03:19,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540320547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:19,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:19,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:03:19,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134822155] [2022-11-16 11:03:19,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:19,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:19,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:19,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:19,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:19,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 120 [2022-11-16 11:03:19,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 11:03:19,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:19,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 120 [2022-11-16 11:03:19,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:22,692 INFO L130 PetriNetUnfolder]: 10893/19475 cut-off events. [2022-11-16 11:03:22,692 INFO L131 PetriNetUnfolder]: For 1856/1856 co-relation queries the response was YES. [2022-11-16 11:03:22,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36672 conditions, 19475 events. 10893/19475 cut-off events. For 1856/1856 co-relation queries the response was YES. Maximal size of possible extension queue 927. Compared 168798 event pairs, 7947 based on Foata normal form. 0/13931 useless extension candidates. Maximal degree in co-relation 36641. Up to 12678 conditions per place. [2022-11-16 11:03:22,869 INFO L137 encePairwiseOnDemand]: 110/120 looper letters, 46 selfloop transitions, 9 changer transitions 0/127 dead transitions. [2022-11-16 11:03:22,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 127 transitions, 403 flow [2022-11-16 11:03:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:22,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2022-11-16 11:03:22,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7972222222222223 [2022-11-16 11:03:22,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2022-11-16 11:03:22,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2022-11-16 11:03:22,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:22,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2022-11-16 11:03:22,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 11:03:22,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 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 11:03:22,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 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 11:03:22,874 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 232 flow. Second operand 3 states and 287 transitions. [2022-11-16 11:03:22,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 127 transitions, 403 flow [2022-11-16 11:03:22,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 127 transitions, 399 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:03:22,878 INFO L231 Difference]: Finished difference. Result has 117 places, 112 transitions, 298 flow [2022-11-16 11:03:22,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=117, PETRI_TRANSITIONS=112} [2022-11-16 11:03:22,879 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, -7 predicate places. [2022-11-16 11:03:22,879 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 112 transitions, 298 flow [2022-11-16 11:03:22,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 11:03:22,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:22,879 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] [2022-11-16 11:03:22,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:03:22,880 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-16 11:03:22,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:22,880 INFO L85 PathProgramCache]: Analyzing trace with hash 536966959, now seen corresponding path program 1 times [2022-11-16 11:03:22,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:22,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159786855] [2022-11-16 11:03:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:22,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:22,907 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 11:03:22,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:22,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159786855] [2022-11-16 11:03:22,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159786855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:22,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:22,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:03:22,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713337423] [2022-11-16 11:03:22,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:22,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:22,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:22,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:22,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:22,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 120 [2022-11-16 11:03:22,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 11:03:22,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:22,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 120 [2022-11-16 11:03:22,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:25,808 INFO L130 PetriNetUnfolder]: 12498/25408 cut-off events. [2022-11-16 11:03:25,808 INFO L131 PetriNetUnfolder]: For 10758/11916 co-relation queries the response was YES. [2022-11-16 11:03:25,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55196 conditions, 25408 events. 12498/25408 cut-off events. For 10758/11916 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 254534 event pairs, 4711 based on Foata normal form. 22/19854 useless extension candidates. Maximal degree in co-relation 30539. Up to 9272 conditions per place. [2022-11-16 11:03:26,074 INFO L137 encePairwiseOnDemand]: 104/120 looper letters, 49 selfloop transitions, 18 changer transitions 0/142 dead transitions. [2022-11-16 11:03:26,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 142 transitions, 555 flow [2022-11-16 11:03:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:26,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2022-11-16 11:03:26,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-11-16 11:03:26,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2022-11-16 11:03:26,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2022-11-16 11:03:26,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:26,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2022-11-16 11:03:26,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 11:03:26,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 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 11:03:26,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 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 11:03:26,079 INFO L175 Difference]: Start difference. First operand has 117 places, 112 transitions, 298 flow. Second operand 3 states and 294 transitions. [2022-11-16 11:03:26,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 142 transitions, 555 flow [2022-11-16 11:03:26,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 142 transitions, 521 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:03:26,150 INFO L231 Difference]: Finished difference. Result has 119 places, 130 transitions, 458 flow [2022-11-16 11:03:26,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=119, PETRI_TRANSITIONS=130} [2022-11-16 11:03:26,151 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, -5 predicate places. [2022-11-16 11:03:26,151 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 130 transitions, 458 flow [2022-11-16 11:03:26,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 11:03:26,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:26,152 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] [2022-11-16 11:03:26,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:03:26,152 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-16 11:03:26,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:26,153 INFO L85 PathProgramCache]: Analyzing trace with hash 637137192, now seen corresponding path program 1 times [2022-11-16 11:03:26,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:26,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803952463] [2022-11-16 11:03:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:26,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:26,198 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 11:03:26,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:26,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803952463] [2022-11-16 11:03:26,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803952463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:26,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:26,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:03:26,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933609284] [2022-11-16 11:03:26,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:26,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:26,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:26,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:26,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:26,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 120 [2022-11-16 11:03:26,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 130 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:26,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:26,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 120 [2022-11-16 11:03:26,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:29,970 INFO L130 PetriNetUnfolder]: 18608/35083 cut-off events. [2022-11-16 11:03:29,970 INFO L131 PetriNetUnfolder]: For 32902/36498 co-relation queries the response was YES. [2022-11-16 11:03:30,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94812 conditions, 35083 events. 18608/35083 cut-off events. For 32902/36498 co-relation queries the response was YES. Maximal size of possible extension queue 1543. Compared 343355 event pairs, 7471 based on Foata normal form. 12/29467 useless extension candidates. Maximal degree in co-relation 49929. Up to 22224 conditions per place. [2022-11-16 11:03:30,583 INFO L137 encePairwiseOnDemand]: 110/120 looper letters, 71 selfloop transitions, 26 changer transitions 0/170 dead transitions. [2022-11-16 11:03:30,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 170 transitions, 868 flow [2022-11-16 11:03:30,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2022-11-16 11:03:30,585 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7944444444444444 [2022-11-16 11:03:30,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2022-11-16 11:03:30,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2022-11-16 11:03:30,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:30,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2022-11-16 11:03:30,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 11:03:30,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 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 11:03:30,589 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 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 11:03:30,590 INFO L175 Difference]: Start difference. First operand has 119 places, 130 transitions, 458 flow. Second operand 3 states and 286 transitions. [2022-11-16 11:03:30,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 170 transitions, 868 flow [2022-11-16 11:03:30,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 170 transitions, 806 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:03:30,663 INFO L231 Difference]: Finished difference. Result has 121 places, 152 transitions, 692 flow [2022-11-16 11:03:30,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=121, PETRI_TRANSITIONS=152} [2022-11-16 11:03:30,664 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, -3 predicate places. [2022-11-16 11:03:30,664 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 152 transitions, 692 flow [2022-11-16 11:03:30,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:30,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:30,665 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:30,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:03:30,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-16 11:03:30,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:30,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1712328771, now seen corresponding path program 1 times [2022-11-16 11:03:30,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:30,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933693102] [2022-11-16 11:03:30,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:30,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:30,715 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-16 11:03:30,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:30,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933693102] [2022-11-16 11:03:30,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933693102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:30,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:30,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:03:30,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829704498] [2022-11-16 11:03:30,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:30,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:30,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:30,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:30,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:30,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 120 [2022-11-16 11:03:30,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 152 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 11:03:30,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:30,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 120 [2022-11-16 11:03:30,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:35,468 INFO L130 PetriNetUnfolder]: 22742/43814 cut-off events. [2022-11-16 11:03:35,468 INFO L131 PetriNetUnfolder]: For 49361/49841 co-relation queries the response was YES. [2022-11-16 11:03:35,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124278 conditions, 43814 events. 22742/43814 cut-off events. For 49361/49841 co-relation queries the response was YES. Maximal size of possible extension queue 1881. Compared 450131 event pairs, 8603 based on Foata normal form. 39/36129 useless extension candidates. Maximal degree in co-relation 70647. Up to 26789 conditions per place. [2022-11-16 11:03:36,093 INFO L137 encePairwiseOnDemand]: 110/120 looper letters, 88 selfloop transitions, 40 changer transitions 0/202 dead transitions. [2022-11-16 11:03:36,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 202 transitions, 1277 flow [2022-11-16 11:03:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:36,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2022-11-16 11:03:36,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2022-11-16 11:03:36,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2022-11-16 11:03:36,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2022-11-16 11:03:36,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:36,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2022-11-16 11:03:36,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 11:03:36,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 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 11:03:36,099 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 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 11:03:36,099 INFO L175 Difference]: Start difference. First operand has 121 places, 152 transitions, 692 flow. Second operand 3 states and 285 transitions. [2022-11-16 11:03:36,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 202 transitions, 1277 flow [2022-11-16 11:03:36,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 202 transitions, 1195 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:03:36,170 INFO L231 Difference]: Finished difference. Result has 123 places, 184 transitions, 1094 flow [2022-11-16 11:03:36,171 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1094, PETRI_PLACES=123, PETRI_TRANSITIONS=184} [2022-11-16 11:03:36,171 INFO L288 CegarLoopForPetriNet]: 124 programPoint places, -1 predicate places. [2022-11-16 11:03:36,172 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 184 transitions, 1094 flow [2022-11-16 11:03:36,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 11:03:36,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:36,172 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] [2022-11-16 11:03:36,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:03:36,173 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-16 11:03:36,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash -678592360, now seen corresponding path program 1 times [2022-11-16 11:03:36,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:36,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589983321] [2022-11-16 11:03:36,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:36,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:03:36,189 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:03:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:03:36,203 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:03:36,203 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:03:36,203 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 12 remaining) [2022-11-16 11:03:36,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2022-11-16 11:03:36,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2022-11-16 11:03:36,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2022-11-16 11:03:36,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2022-11-16 11:03:36,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2022-11-16 11:03:36,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2022-11-16 11:03:36,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2022-11-16 11:03:36,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2022-11-16 11:03:36,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2022-11-16 11:03:36,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2022-11-16 11:03:36,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2022-11-16 11:03:36,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:03:36,207 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-16 11:03:36,212 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 4 thread instances [2022-11-16 11:03:36,213 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:03:36,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:03:36 BasicIcfg [2022-11-16 11:03:36,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:03:36,267 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:03:36,267 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:03:36,268 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:03:36,268 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:03:13" (3/4) ... [2022-11-16 11:03:36,271 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 11:03:36,271 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:03:36,272 INFO L158 Benchmark]: Toolchain (without parser) took 24053.68ms. Allocated memory was 109.1MB in the beginning and 11.4GB in the end (delta: 11.3GB). Free memory was 69.3MB in the beginning and 10.2GB in the end (delta: -10.1GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-16 11:03:36,272 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:03:36,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 590.29ms. Allocated memory is still 109.1MB. Free memory was 69.2MB in the beginning and 75.3MB in the end (delta: -6.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:03:36,273 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.91ms. Allocated memory is still 109.1MB. Free memory was 75.3MB in the beginning and 73.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:03:36,273 INFO L158 Benchmark]: Boogie Preprocessor took 36.63ms. Allocated memory is still 109.1MB. Free memory was 73.3MB in the beginning and 72.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:03:36,274 INFO L158 Benchmark]: RCFGBuilder took 362.06ms. Allocated memory is still 109.1MB. Free memory was 72.0MB in the beginning and 60.7MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 11:03:36,274 INFO L158 Benchmark]: TraceAbstraction took 22994.07ms. Allocated memory was 109.1MB in the beginning and 11.4GB in the end (delta: 11.3GB). Free memory was 60.3MB in the beginning and 10.2GB in the end (delta: -10.1GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-16 11:03:36,274 INFO L158 Benchmark]: Witness Printer took 4.22ms. Allocated memory is still 11.4GB. Free memory is still 10.2GB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:03:36,276 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 590.29ms. Allocated memory is still 109.1MB. Free memory was 69.2MB in the beginning and 75.3MB in the end (delta: -6.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.91ms. Allocated memory is still 109.1MB. Free memory was 75.3MB in the beginning and 73.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.63ms. Allocated memory is still 109.1MB. Free memory was 73.3MB in the beginning and 72.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 362.06ms. Allocated memory is still 109.1MB. Free memory was 72.0MB in the beginning and 60.7MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 22994.07ms. Allocated memory was 109.1MB in the beginning and 11.4GB in the end (delta: 11.3GB). Free memory was 60.3MB in the beginning and 10.2GB in the end (delta: -10.1GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 4.22ms. Allocated memory is still 11.4GB. Free memory is still 10.2GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 690]: Data race detected Data race detected The following path leads to a data race: [L685] 0 int s; VAL [s=0] [L696] 0 s = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, s=0, s = __VERIFIER_nondet_int()=49] [L697] 0 pthread_t t; VAL [s=0, t={3:0}] [L698] COND TRUE 0 1 VAL [s=0, t={3:0}] [L698] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, pthread_create(&t, 0, thr1, 0)=-1, s=0, t={3:0}] [L688] 1 int l = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, l=0, s=0] [L689] 1 l = 4 VAL [arg={0:0}, arg={0:0}, l=4, s=0] [L690] 1 s = l VAL [arg={0:0}, arg={0:0}, l=4, s=4, s = l=50] [L698] COND TRUE 0 1 VAL [arg={0:0}, arg={0:0}, l=4, s=4, s = l=50, t={3:0}] [L698] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, arg={0:0}, l=4, pthread_create(&t, 0, thr1, 0)=0, s=4, s = l=50, t={3:0}] [L688] 2 int l = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, l=0, s=4, s = l=50] [L689] 2 l = 4 VAL [arg={0:0}, arg={0:0}, l=4, s=4, s = l=50] [L690] 2 s = l VAL [arg={0:0}, arg={0:0}, l=4, s=4, s = l=50] Now there is a data race on ~s~0 between C: s = __VERIFIER_nondet_int() [696] and C: s = l [690] - UnprovableResult [Line: 691]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 76 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 10 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 96 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69 IncrementalHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 49 mSDtfsCounter, 69 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=3, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 94 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 116 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 93 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 143 IncrementalHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 93 mSDtfsCounter, 143 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=477occurred in iteration=4, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 137 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 5/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 6 procedures, 136 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.1s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 18.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 155 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 246 IncrementalHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 155 mSDtfsCounter, 246 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1094occurred in iteration=5, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 232 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 22/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 11:03:36,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbe0031-f108-461d-b274-bf145c76a194/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE