./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/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_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/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_6b27585e-4c8d-41ae-8f82-d308b56f281c/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 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:52:55,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:52:55,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:52:55,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:52:55,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:52:55,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:52:55,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:52:55,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:52:55,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:52:55,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:52:55,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:52:55,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:52:55,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:52:55,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:52:55,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:52:55,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:52:55,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:52:55,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:52:55,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:52:55,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:52:55,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:52:55,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:52:55,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:52:55,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:52:55,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:52:55,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:52:55,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:52:55,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:52:55,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:52:55,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:52:55,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:52:55,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:52:55,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:52:55,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:52:55,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:52:55,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:52:55,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:52:55,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:52:55,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:52:55,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:52:55,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:52:55,090 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 12:52:55,130 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:52:55,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:52:55,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:52:55,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:52:55,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:52:55,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:52:55,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:52:55,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:52:55,142 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:52:55,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:52:55,144 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:52:55,144 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:52:55,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:52:55,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:52:55,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:52:55,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:52:55,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:52:55,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:52:55,146 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 12:52:55,146 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:52:55,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:52:55,147 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:52:55,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:52:55,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:52:55,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:52:55,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:52:55,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:52:55,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:52:55,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:52:55,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:52:55,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:52:55,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:52:55,150 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:52:55,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:52:55,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:52:55,151 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_6b27585e-4c8d-41ae-8f82-d308b56f281c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 [2022-11-16 12:52:55,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:52:55,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:52:55,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:52:55,597 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:52:55,598 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:52:55,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2022-11-16 12:52:55,690 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/data/ca4c6f059/9f9b698701b247a5acf92fefe0336b87/FLAG3abafa92b [2022-11-16 12:52:56,443 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:52:56,448 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2022-11-16 12:52:56,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/data/ca4c6f059/9f9b698701b247a5acf92fefe0336b87/FLAG3abafa92b [2022-11-16 12:52:56,622 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/data/ca4c6f059/9f9b698701b247a5acf92fefe0336b87 [2022-11-16 12:52:56,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:52:56,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:52:56,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:52:56,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:52:56,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:52:56,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:52:56" (1/1) ... [2022-11-16 12:52:56,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab69eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:56, skipping insertion in model container [2022-11-16 12:52:56,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:52:56" (1/1) ... [2022-11-16 12:52:56,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:52:56,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:52:57,448 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_6b27585e-4c8d-41ae-8f82-d308b56f281c/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2022-11-16 12:52:57,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:52:57,545 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:52:57,608 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_6b27585e-4c8d-41ae-8f82-d308b56f281c/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2022-11-16 12:52:57,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:52:57,727 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:52:57,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:57 WrapperNode [2022-11-16 12:52:57,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:52:57,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:52:57,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:52:57,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:52:57,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:57" (1/1) ... [2022-11-16 12:52:57,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:57" (1/1) ... [2022-11-16 12:52:57,846 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 252 [2022-11-16 12:52:57,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:52:57,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:52:57,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:52:57,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:52:57,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:57" (1/1) ... [2022-11-16 12:52:57,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:57" (1/1) ... [2022-11-16 12:52:57,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:57" (1/1) ... [2022-11-16 12:52:57,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:57" (1/1) ... [2022-11-16 12:52:57,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:57" (1/1) ... [2022-11-16 12:52:57,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:57" (1/1) ... [2022-11-16 12:52:57,950 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:57" (1/1) ... [2022-11-16 12:52:57,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:57" (1/1) ... [2022-11-16 12:52:57,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:52:57,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:52:57,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:52:57,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:52:57,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:57" (1/1) ... [2022-11-16 12:52:57,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:52:57,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:52:57,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:52:58,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:52:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:52:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:52:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:52:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:52:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:52:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:52:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:52:58,054 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:52:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:52:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:52:58,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:52:58,057 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:52:58,318 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:52:58,320 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:52:58,930 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:52:58,943 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:52:58,943 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-16 12:52:58,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:52:58 BoogieIcfgContainer [2022-11-16 12:52:58,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:52:58,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:52:58,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:52:58,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:52:58,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:52:56" (1/3) ... [2022-11-16 12:52:58,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea16ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:52:58, skipping insertion in model container [2022-11-16 12:52:58,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:52:57" (2/3) ... [2022-11-16 12:52:58,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea16ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:52:58, skipping insertion in model container [2022-11-16 12:52:58,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:52:58" (3/3) ... [2022-11-16 12:52:58,969 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2022-11-16 12:52:58,980 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:52:58,994 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:52:58,994 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-16 12:52:58,995 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:52:59,131 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:52:59,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 272 transitions, 552 flow [2022-11-16 12:52:59,333 INFO L130 PetriNetUnfolder]: 45/383 cut-off events. [2022-11-16 12:52:59,333 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-16 12:52:59,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 383 events. 45/383 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1544 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 222. Up to 8 conditions per place. [2022-11-16 12:52:59,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 272 transitions, 552 flow [2022-11-16 12:52:59,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 272 transitions, 552 flow [2022-11-16 12:52:59,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:52:59,375 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;@dca09d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:52:59,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-16 12:52:59,437 INFO L130 PetriNetUnfolder]: 11/118 cut-off events. [2022-11-16 12:52:59,438 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:52:59,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:52:59,439 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:59,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-16 12:52:59,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:59,453 INFO L85 PathProgramCache]: Analyzing trace with hash -472500586, now seen corresponding path program 1 times [2022-11-16 12:52:59,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:52:59,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614991718] [2022-11-16 12:52:59,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:59,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:52:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:59,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:52:59,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614991718] [2022-11-16 12:52:59,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614991718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:59,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:59,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:52:59,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875894922] [2022-11-16 12:52:59,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:59,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:52:59,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:52:59,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:52:59,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:52:59,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 272 [2022-11-16 12:52:59,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 272 transitions, 552 flow. Second operand has 2 states, 2 states have (on average 242.5) internal successors, (485), 2 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:59,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:52:59,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 272 [2022-11-16 12:52:59,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:52:59,969 INFO L130 PetriNetUnfolder]: 5/340 cut-off events. [2022-11-16 12:52:59,969 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-16 12:52:59,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 340 events. 5/340 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1126 event pairs, 0 based on Foata normal form. 40/350 useless extension candidates. Maximal degree in co-relation 197. Up to 4 conditions per place. [2022-11-16 12:52:59,977 INFO L137 encePairwiseOnDemand]: 245/272 looper letters, 2 selfloop transitions, 0 changer transitions 1/243 dead transitions. [2022-11-16 12:52:59,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 243 transitions, 498 flow [2022-11-16 12:52:59,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:52:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:52:59,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 511 transitions. [2022-11-16 12:53:00,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9393382352941176 [2022-11-16 12:53:00,006 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 511 transitions. [2022-11-16 12:53:00,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 511 transitions. [2022-11-16 12:53:00,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:53:00,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 511 transitions. [2022-11-16 12:53:00,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 255.5) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:00,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:00,034 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:00,037 INFO L175 Difference]: Start difference. First operand has 244 places, 272 transitions, 552 flow. Second operand 2 states and 511 transitions. [2022-11-16 12:53:00,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 243 transitions, 498 flow [2022-11-16 12:53:00,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 243 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:53:00,057 INFO L231 Difference]: Finished difference. Result has 243 places, 242 transitions, 492 flow [2022-11-16 12:53:00,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=492, PETRI_PLACES=243, PETRI_TRANSITIONS=242} [2022-11-16 12:53:00,067 INFO L288 CegarLoopForPetriNet]: 244 programPoint places, -1 predicate places. [2022-11-16 12:53:00,068 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 242 transitions, 492 flow [2022-11-16 12:53:00,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 242.5) internal successors, (485), 2 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:00,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:53:00,070 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:00,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:53:00,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-16 12:53:00,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:00,074 INFO L85 PathProgramCache]: Analyzing trace with hash 421911486, now seen corresponding path program 1 times [2022-11-16 12:53:00,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:00,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250596340] [2022-11-16 12:53:00,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:00,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:00,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:00,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250596340] [2022-11-16 12:53:00,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250596340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:00,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:00,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:53:00,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987664779] [2022-11-16 12:53:00,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:00,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:53:00,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:00,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:53:00,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:53:00,268 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 272 [2022-11-16 12:53:00,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 242 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:00,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:53:00,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 272 [2022-11-16 12:53:00,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:53:00,392 INFO L130 PetriNetUnfolder]: 5/343 cut-off events. [2022-11-16 12:53:00,392 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-16 12:53:00,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 343 events. 5/343 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1123 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 360. Up to 10 conditions per place. [2022-11-16 12:53:00,397 INFO L137 encePairwiseOnDemand]: 269/272 looper letters, 11 selfloop transitions, 2 changer transitions 0/246 dead transitions. [2022-11-16 12:53:00,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 246 transitions, 526 flow [2022-11-16 12:53:00,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:00,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:53:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2022-11-16 12:53:00,401 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8774509803921569 [2022-11-16 12:53:00,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2022-11-16 12:53:00,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2022-11-16 12:53:00,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:53:00,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2022-11-16 12:53:00,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:00,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:00,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:00,410 INFO L175 Difference]: Start difference. First operand has 243 places, 242 transitions, 492 flow. Second operand 3 states and 716 transitions. [2022-11-16 12:53:00,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 246 transitions, 526 flow [2022-11-16 12:53:00,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 246 transitions, 526 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:53:00,419 INFO L231 Difference]: Finished difference. Result has 245 places, 243 transitions, 504 flow [2022-11-16 12:53:00,420 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=245, PETRI_TRANSITIONS=243} [2022-11-16 12:53:00,421 INFO L288 CegarLoopForPetriNet]: 244 programPoint places, 1 predicate places. [2022-11-16 12:53:00,421 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 243 transitions, 504 flow [2022-11-16 12:53:00,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:00,422 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:53:00,423 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:00,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:53:00,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-16 12:53:00,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:00,424 INFO L85 PathProgramCache]: Analyzing trace with hash 806415212, now seen corresponding path program 1 times [2022-11-16 12:53:00,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:00,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014185799] [2022-11-16 12:53:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:00,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:00,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:00,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014185799] [2022-11-16 12:53:00,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014185799] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:53:00,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226011234] [2022-11-16 12:53:00,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:00,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:53:00,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:53:00,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:53:00,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:53:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:00,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:53:00,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:53:00,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:53:00,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226011234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:00,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:53:00,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 12:53:00,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592195403] [2022-11-16 12:53:00,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:00,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:53:00,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:00,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:53:00,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:53:00,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 272 [2022-11-16 12:53:00,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 243 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:00,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:53:00,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 272 [2022-11-16 12:53:00,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:53:01,107 INFO L130 PetriNetUnfolder]: 3/265 cut-off events. [2022-11-16 12:53:01,108 INFO L131 PetriNetUnfolder]: For 4/10 co-relation queries the response was YES. [2022-11-16 12:53:01,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 265 events. 3/265 cut-off events. For 4/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 563 event pairs, 0 based on Foata normal form. 1/246 useless extension candidates. Maximal degree in co-relation 285. Up to 7 conditions per place. [2022-11-16 12:53:01,112 INFO L137 encePairwiseOnDemand]: 269/272 looper letters, 9 selfloop transitions, 2 changer transitions 0/245 dead transitions. [2022-11-16 12:53:01,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 245 transitions, 530 flow [2022-11-16 12:53:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:01,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:53:01,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2022-11-16 12:53:01,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-11-16 12:53:01,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2022-11-16 12:53:01,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2022-11-16 12:53:01,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:53:01,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2022-11-16 12:53:01,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:01,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:01,123 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:01,124 INFO L175 Difference]: Start difference. First operand has 245 places, 243 transitions, 504 flow. Second operand 3 states and 714 transitions. [2022-11-16 12:53:01,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 245 transitions, 530 flow [2022-11-16 12:53:01,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 245 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:53:01,130 INFO L231 Difference]: Finished difference. Result has 247 places, 243 transitions, 510 flow [2022-11-16 12:53:01,131 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=510, PETRI_PLACES=247, PETRI_TRANSITIONS=243} [2022-11-16 12:53:01,134 INFO L288 CegarLoopForPetriNet]: 244 programPoint places, 3 predicate places. [2022-11-16 12:53:01,134 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 243 transitions, 510 flow [2022-11-16 12:53:01,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:01,135 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:53:01,135 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:01,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:01,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:53:01,343 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-16 12:53:01,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:01,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1952452948, now seen corresponding path program 1 times [2022-11-16 12:53:01,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:01,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249975609] [2022-11-16 12:53:01,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:01,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:53:01,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:01,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249975609] [2022-11-16 12:53:01,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249975609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:53:01,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779650176] [2022-11-16 12:53:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:01,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:53:01,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:53:01,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:53:01,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:53:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:01,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:53:01,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:53:01,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:53:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:53:01,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779650176] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:53:01,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:53:01,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:53:01,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640355855] [2022-11-16 12:53:01,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:53:01,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:53:01,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:01,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:53:01,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:53:01,845 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 272 [2022-11-16 12:53:01,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 243 transitions, 510 flow. Second operand has 10 states, 10 states have (on average 235.1) internal successors, (2351), 10 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:01,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:53:01,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 272 [2022-11-16 12:53:01,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:53:02,052 INFO L130 PetriNetUnfolder]: 3/272 cut-off events. [2022-11-16 12:53:02,052 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-16 12:53:02,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 272 events. 3/272 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 558 event pairs, 0 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 306. Up to 7 conditions per place. [2022-11-16 12:53:02,057 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 12 selfloop transitions, 9 changer transitions 0/253 dead transitions. [2022-11-16 12:53:02,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 253 transitions, 574 flow [2022-11-16 12:53:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:53:02,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:53:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2120 transitions. [2022-11-16 12:53:02,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8660130718954249 [2022-11-16 12:53:02,080 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2120 transitions. [2022-11-16 12:53:02,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2120 transitions. [2022-11-16 12:53:02,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:53:02,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2120 transitions. [2022-11-16 12:53:02,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 235.55555555555554) internal successors, (2120), 9 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:02,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 272.0) internal successors, (2720), 10 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:02,099 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 272.0) internal successors, (2720), 10 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:02,099 INFO L175 Difference]: Start difference. First operand has 247 places, 243 transitions, 510 flow. Second operand 9 states and 2120 transitions. [2022-11-16 12:53:02,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 253 transitions, 574 flow [2022-11-16 12:53:02,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 253 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:53:02,109 INFO L231 Difference]: Finished difference. Result has 256 places, 249 transitions, 556 flow [2022-11-16 12:53:02,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=556, PETRI_PLACES=256, PETRI_TRANSITIONS=249} [2022-11-16 12:53:02,112 INFO L288 CegarLoopForPetriNet]: 244 programPoint places, 12 predicate places. [2022-11-16 12:53:02,112 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 249 transitions, 556 flow [2022-11-16 12:53:02,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 235.1) internal successors, (2351), 10 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:02,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:53:02,115 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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 12:53:02,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:02,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:53:02,322 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-16 12:53:02,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:02,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1813775508, now seen corresponding path program 2 times [2022-11-16 12:53:02,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:02,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347542292] [2022-11-16 12:53:02,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:02,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:53:02,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:02,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347542292] [2022-11-16 12:53:02,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347542292] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:53:02,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060105677] [2022-11-16 12:53:02,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:53:02,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:53:02,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:53:02,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:53:02,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:53:02,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:53:02,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:53:02,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:53:02,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:53:02,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:53:02,937 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:53:02,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060105677] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:53:02,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:53:02,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 12:53:02,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229453581] [2022-11-16 12:53:02,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:53:02,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:53:02,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:02,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:53:02,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:53:02,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 272 [2022-11-16 12:53:02,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 249 transitions, 556 flow. Second operand has 18 states, 18 states have (on average 235.27777777777777) internal successors, (4235), 18 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:02,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:53:02,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 272 [2022-11-16 12:53:02,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:53:03,361 INFO L130 PetriNetUnfolder]: 3/292 cut-off events. [2022-11-16 12:53:03,362 INFO L131 PetriNetUnfolder]: For 26/27 co-relation queries the response was YES. [2022-11-16 12:53:03,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 292 events. 3/292 cut-off events. For 26/27 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 559 event pairs, 0 based on Foata normal form. 4/277 useless extension candidates. Maximal degree in co-relation 392. Up to 11 conditions per place. [2022-11-16 12:53:03,366 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 20 selfloop transitions, 21 changer transitions 0/273 dead transitions. [2022-11-16 12:53:03,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 273 transitions, 746 flow [2022-11-16 12:53:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:53:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:53:03,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4938 transitions. [2022-11-16 12:53:03,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8644957983193278 [2022-11-16 12:53:03,381 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4938 transitions. [2022-11-16 12:53:03,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4938 transitions. [2022-11-16 12:53:03,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:53:03,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4938 transitions. [2022-11-16 12:53:03,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 235.14285714285714) internal successors, (4938), 21 states have internal predecessors, (4938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:03,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 272.0) internal successors, (5984), 22 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:03,417 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 272.0) internal successors, (5984), 22 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:03,417 INFO L175 Difference]: Start difference. First operand has 256 places, 249 transitions, 556 flow. Second operand 21 states and 4938 transitions. [2022-11-16 12:53:03,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 273 transitions, 746 flow [2022-11-16 12:53:03,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 273 transitions, 732 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-16 12:53:03,428 INFO L231 Difference]: Finished difference. Result has 280 places, 262 transitions, 680 flow [2022-11-16 12:53:03,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=680, PETRI_PLACES=280, PETRI_TRANSITIONS=262} [2022-11-16 12:53:03,431 INFO L288 CegarLoopForPetriNet]: 244 programPoint places, 36 predicate places. [2022-11-16 12:53:03,432 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 262 transitions, 680 flow [2022-11-16 12:53:03,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 235.27777777777777) internal successors, (4235), 18 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:03,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:53:03,435 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 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 12:53:03,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:03,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:53:03,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-16 12:53:03,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:03,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1468876012, now seen corresponding path program 3 times [2022-11-16 12:53:03,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:03,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898098839] [2022-11-16 12:53:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:03,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:04,223 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:53:04,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:04,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898098839] [2022-11-16 12:53:04,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898098839] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:53:04,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104705072] [2022-11-16 12:53:04,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:53:04,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:53:04,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:53:04,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:53:04,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:53:04,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-16 12:53:04,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:53:04,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:53:04,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:53:04,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:53:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:53:04,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104705072] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:53:04,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:53:04,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 12:53:04,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589171759] [2022-11-16 12:53:04,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:53:04,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:53:04,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:04,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:53:04,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:53:04,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 272 [2022-11-16 12:53:04,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 262 transitions, 680 flow. Second operand has 23 states, 23 states have (on average 235.43478260869566) internal successors, (5415), 23 states have internal predecessors, (5415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:04,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:53:04,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 272 [2022-11-16 12:53:04,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:53:05,507 INFO L130 PetriNetUnfolder]: 3/307 cut-off events. [2022-11-16 12:53:05,507 INFO L131 PetriNetUnfolder]: For 114/115 co-relation queries the response was YES. [2022-11-16 12:53:05,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 307 events. 3/307 cut-off events. For 114/115 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 561 event pairs, 0 based on Foata normal form. 3/291 useless extension candidates. Maximal degree in co-relation 488. Up to 17 conditions per place. [2022-11-16 12:53:05,512 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 26 selfloop transitions, 30 changer transitions 0/288 dead transitions. [2022-11-16 12:53:05,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 288 transitions, 938 flow [2022-11-16 12:53:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:53:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:53:05,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7049 transitions. [2022-11-16 12:53:05,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8638480392156863 [2022-11-16 12:53:05,531 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7049 transitions. [2022-11-16 12:53:05,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7049 transitions. [2022-11-16 12:53:05,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:53:05,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7049 transitions. [2022-11-16 12:53:05,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 234.96666666666667) internal successors, (7049), 30 states have internal predecessors, (7049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:05,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 272.0) internal successors, (8432), 31 states have internal predecessors, (8432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:05,599 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 272.0) internal successors, (8432), 31 states have internal predecessors, (8432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:05,599 INFO L175 Difference]: Start difference. First operand has 280 places, 262 transitions, 680 flow. Second operand 30 states and 7049 transitions. [2022-11-16 12:53:05,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 288 transitions, 938 flow [2022-11-16 12:53:05,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 288 transitions, 908 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-16 12:53:05,613 INFO L231 Difference]: Finished difference. Result has 307 places, 272 transitions, 808 flow [2022-11-16 12:53:05,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=808, PETRI_PLACES=307, PETRI_TRANSITIONS=272} [2022-11-16 12:53:05,617 INFO L288 CegarLoopForPetriNet]: 244 programPoint places, 63 predicate places. [2022-11-16 12:53:05,617 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 272 transitions, 808 flow [2022-11-16 12:53:05,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 235.43478260869566) internal successors, (5415), 23 states have internal predecessors, (5415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:05,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:53:05,620 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 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 12:53:05,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:05,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:53:05,830 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-16 12:53:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:05,831 INFO L85 PathProgramCache]: Analyzing trace with hash -575057702, now seen corresponding path program 4 times [2022-11-16 12:53:05,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:05,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084707957] [2022-11-16 12:53:05,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:05,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:53:05,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:53:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:53:05,990 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:53:05,991 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:53:05,993 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-16 12:53:05,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-16 12:53:05,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-16 12:53:05,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-16 12:53:05,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-16 12:53:05,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-16 12:53:05,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-16 12:53:06,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-16 12:53:06,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-16 12:53:06,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-16 12:53:06,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-16 12:53:06,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-16 12:53:06,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-16 12:53:06,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-16 12:53:06,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-16 12:53:06,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-16 12:53:06,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-16 12:53:06,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:53:06,008 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-11-16 12:53:06,011 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:53:06,011 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:53:06,136 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:53:06,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 380 transitions, 778 flow [2022-11-16 12:53:06,295 INFO L130 PetriNetUnfolder]: 75/633 cut-off events. [2022-11-16 12:53:06,295 INFO L131 PetriNetUnfolder]: For 6/9 co-relation queries the response was YES. [2022-11-16 12:53:06,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 633 events. 75/633 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3145 event pairs, 0 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 385. Up to 12 conditions per place. [2022-11-16 12:53:06,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 380 transitions, 778 flow [2022-11-16 12:53:06,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 380 transitions, 778 flow [2022-11-16 12:53:06,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:53:06,331 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;@dca09d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:53:06,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-16 12:53:06,343 INFO L130 PetriNetUnfolder]: 11/118 cut-off events. [2022-11-16 12:53:06,343 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:53:06,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:53:06,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:06,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 12:53:06,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash -2002441578, now seen corresponding path program 1 times [2022-11-16 12:53:06,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:06,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242121301] [2022-11-16 12:53:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:06,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:06,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:06,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242121301] [2022-11-16 12:53:06,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242121301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:06,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:06,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:53:06,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469607443] [2022-11-16 12:53:06,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:06,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:53:06,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:06,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:53:06,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:53:06,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 380 [2022-11-16 12:53:06,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 380 transitions, 778 flow. Second operand has 2 states, 2 states have (on average 335.5) internal successors, (671), 2 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:06,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:53:06,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 380 [2022-11-16 12:53:06,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:53:06,594 INFO L130 PetriNetUnfolder]: 9/562 cut-off events. [2022-11-16 12:53:06,594 INFO L131 PetriNetUnfolder]: For 21/27 co-relation queries the response was YES. [2022-11-16 12:53:06,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 562 events. 9/562 cut-off events. For 21/27 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2559 event pairs, 0 based on Foata normal form. 91/603 useless extension candidates. Maximal degree in co-relation 344. Up to 7 conditions per place. [2022-11-16 12:53:06,607 INFO L137 encePairwiseOnDemand]: 341/380 looper letters, 4 selfloop transitions, 0 changer transitions 1/338 dead transitions. [2022-11-16 12:53:06,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 338 transitions, 702 flow [2022-11-16 12:53:06,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:53:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:53:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 711 transitions. [2022-11-16 12:53:06,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9355263157894737 [2022-11-16 12:53:06,611 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 711 transitions. [2022-11-16 12:53:06,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 711 transitions. [2022-11-16 12:53:06,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:53:06,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 711 transitions. [2022-11-16 12:53:06,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 355.5) internal successors, (711), 2 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:06,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 380.0) internal successors, (1140), 3 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:06,617 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 380.0) internal successors, (1140), 3 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:06,617 INFO L175 Difference]: Start difference. First operand has 340 places, 380 transitions, 778 flow. Second operand 2 states and 711 transitions. [2022-11-16 12:53:06,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 338 transitions, 702 flow [2022-11-16 12:53:06,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 338 transitions, 702 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:53:06,628 INFO L231 Difference]: Finished difference. Result has 338 places, 337 transitions, 692 flow [2022-11-16 12:53:06,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=692, PETRI_PLACES=338, PETRI_TRANSITIONS=337} [2022-11-16 12:53:06,630 INFO L288 CegarLoopForPetriNet]: 340 programPoint places, -2 predicate places. [2022-11-16 12:53:06,631 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 337 transitions, 692 flow [2022-11-16 12:53:06,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 335.5) internal successors, (671), 2 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:06,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:53:06,632 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:06,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:53:06,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 12:53:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:06,634 INFO L85 PathProgramCache]: Analyzing trace with hash 238381370, now seen corresponding path program 1 times [2022-11-16 12:53:06,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:06,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341837349] [2022-11-16 12:53:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:06,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:06,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:06,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341837349] [2022-11-16 12:53:06,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341837349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:06,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:06,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:53:06,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267341918] [2022-11-16 12:53:06,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:06,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:53:06,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:06,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:53:06,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:53:06,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 380 [2022-11-16 12:53:06,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 337 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:06,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:53:06,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 380 [2022-11-16 12:53:06,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:53:06,884 INFO L130 PetriNetUnfolder]: 9/565 cut-off events. [2022-11-16 12:53:06,885 INFO L131 PetriNetUnfolder]: For 21/27 co-relation queries the response was YES. [2022-11-16 12:53:06,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 565 events. 9/565 cut-off events. For 21/27 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2552 event pairs, 0 based on Foata normal form. 0/516 useless extension candidates. Maximal degree in co-relation 593. Up to 14 conditions per place. [2022-11-16 12:53:06,898 INFO L137 encePairwiseOnDemand]: 377/380 looper letters, 13 selfloop transitions, 2 changer transitions 0/341 dead transitions. [2022-11-16 12:53:06,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 341 transitions, 730 flow [2022-11-16 12:53:06,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:53:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 997 transitions. [2022-11-16 12:53:06,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.874561403508772 [2022-11-16 12:53:06,902 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 997 transitions. [2022-11-16 12:53:06,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 997 transitions. [2022-11-16 12:53:06,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:53:06,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 997 transitions. [2022-11-16 12:53:06,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:06,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:06,910 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:06,910 INFO L175 Difference]: Start difference. First operand has 338 places, 337 transitions, 692 flow. Second operand 3 states and 997 transitions. [2022-11-16 12:53:06,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 341 transitions, 730 flow [2022-11-16 12:53:06,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 341 transitions, 730 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:53:06,918 INFO L231 Difference]: Finished difference. Result has 340 places, 338 transitions, 704 flow [2022-11-16 12:53:06,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=704, PETRI_PLACES=340, PETRI_TRANSITIONS=338} [2022-11-16 12:53:06,921 INFO L288 CegarLoopForPetriNet]: 340 programPoint places, 0 predicate places. [2022-11-16 12:53:06,921 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 338 transitions, 704 flow [2022-11-16 12:53:06,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:06,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:53:06,923 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:06,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:53:06,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 12:53:06,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:06,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1863856660, now seen corresponding path program 1 times [2022-11-16 12:53:06,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:06,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830020031] [2022-11-16 12:53:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:06,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:53:07,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:07,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830020031] [2022-11-16 12:53:07,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830020031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:53:07,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546551767] [2022-11-16 12:53:07,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:07,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:53:07,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:53:07,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:53:07,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:53:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:07,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:53:07,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:53:07,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:53:07,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546551767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:07,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:53:07,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 12:53:07,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728903048] [2022-11-16 12:53:07,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:07,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:53:07,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:07,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:53:07,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:53:07,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 380 [2022-11-16 12:53:07,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 338 transitions, 704 flow. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:07,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:53:07,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 380 [2022-11-16 12:53:07,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:53:07,369 INFO L130 PetriNetUnfolder]: 7/487 cut-off events. [2022-11-16 12:53:07,369 INFO L131 PetriNetUnfolder]: For 33/79 co-relation queries the response was YES. [2022-11-16 12:53:07,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 487 events. 7/487 cut-off events. For 33/79 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1938 event pairs, 0 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 523. Up to 16 conditions per place. [2022-11-16 12:53:07,383 INFO L137 encePairwiseOnDemand]: 377/380 looper letters, 13 selfloop transitions, 2 changer transitions 0/342 dead transitions. [2022-11-16 12:53:07,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 342 transitions, 742 flow [2022-11-16 12:53:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:53:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 997 transitions. [2022-11-16 12:53:07,387 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.874561403508772 [2022-11-16 12:53:07,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 997 transitions. [2022-11-16 12:53:07,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 997 transitions. [2022-11-16 12:53:07,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:53:07,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 997 transitions. [2022-11-16 12:53:07,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:07,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:07,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:07,395 INFO L175 Difference]: Start difference. First operand has 340 places, 338 transitions, 704 flow. Second operand 3 states and 997 transitions. [2022-11-16 12:53:07,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 342 transitions, 742 flow [2022-11-16 12:53:07,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 342 transitions, 740 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:53:07,404 INFO L231 Difference]: Finished difference. Result has 342 places, 339 transitions, 714 flow [2022-11-16 12:53:07,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=714, PETRI_PLACES=342, PETRI_TRANSITIONS=339} [2022-11-16 12:53:07,406 INFO L288 CegarLoopForPetriNet]: 340 programPoint places, 2 predicate places. [2022-11-16 12:53:07,406 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 339 transitions, 714 flow [2022-11-16 12:53:07,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:07,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:53:07,407 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:07,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:07,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:53:07,614 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 12:53:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:07,615 INFO L85 PathProgramCache]: Analyzing trace with hash 15139270, now seen corresponding path program 1 times [2022-11-16 12:53:07,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:07,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530200503] [2022-11-16 12:53:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:07,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:53:07,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:07,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530200503] [2022-11-16 12:53:07,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530200503] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:53:07,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559824784] [2022-11-16 12:53:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:07,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:53:07,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:53:07,715 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:53:07,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:53:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:07,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:53:07,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:53:07,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:53:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:53:07,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559824784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:53:07,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:53:07,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:53:07,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388427477] [2022-11-16 12:53:07,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:53:07,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:53:07,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:07,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:53:07,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:53:07,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 380 [2022-11-16 12:53:07,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 339 transitions, 714 flow. Second operand has 10 states, 10 states have (on average 328.1) internal successors, (3281), 10 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:07,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:53:07,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 380 [2022-11-16 12:53:07,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:53:08,207 INFO L130 PetriNetUnfolder]: 7/494 cut-off events. [2022-11-16 12:53:08,208 INFO L131 PetriNetUnfolder]: For 22/28 co-relation queries the response was YES. [2022-11-16 12:53:08,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 494 events. 7/494 cut-off events. For 22/28 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1936 event pairs, 0 based on Foata normal form. 2/458 useless extension candidates. Maximal degree in co-relation 541. Up to 11 conditions per place. [2022-11-16 12:53:08,219 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 14 selfloop transitions, 9 changer transitions 0/349 dead transitions. [2022-11-16 12:53:08,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 349 transitions, 782 flow [2022-11-16 12:53:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:53:08,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:53:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2959 transitions. [2022-11-16 12:53:08,227 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8652046783625731 [2022-11-16 12:53:08,228 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2959 transitions. [2022-11-16 12:53:08,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2959 transitions. [2022-11-16 12:53:08,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:53:08,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2959 transitions. [2022-11-16 12:53:08,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 328.77777777777777) internal successors, (2959), 9 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:08,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 380.0) internal successors, (3800), 10 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:08,246 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 380.0) internal successors, (3800), 10 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:08,246 INFO L175 Difference]: Start difference. First operand has 342 places, 339 transitions, 714 flow. Second operand 9 states and 2959 transitions. [2022-11-16 12:53:08,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 349 transitions, 782 flow [2022-11-16 12:53:08,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 349 transitions, 780 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:53:08,254 INFO L231 Difference]: Finished difference. Result has 352 places, 345 transitions, 762 flow [2022-11-16 12:53:08,255 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=762, PETRI_PLACES=352, PETRI_TRANSITIONS=345} [2022-11-16 12:53:08,256 INFO L288 CegarLoopForPetriNet]: 340 programPoint places, 12 predicate places. [2022-11-16 12:53:08,256 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 345 transitions, 762 flow [2022-11-16 12:53:08,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 328.1) internal successors, (3281), 10 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:08,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:53:08,258 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:08,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:08,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:53:08,466 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 12:53:08,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:08,466 INFO L85 PathProgramCache]: Analyzing trace with hash 234846854, now seen corresponding path program 2 times [2022-11-16 12:53:08,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:53:08,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008696417] [2022-11-16 12:53:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:08,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:53:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:53:08,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:53:08,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008696417] [2022-11-16 12:53:08,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008696417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:53:08,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065649758] [2022-11-16 12:53:08,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:53:08,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:53:08,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:53:08,574 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:53:08,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b27585e-4c8d-41ae-8f82-d308b56f281c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:53:08,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:53:08,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:53:08,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:53:08,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:08,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 12:53:08,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-16 12:53:08,812 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:53:08,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-16 12:53:08,851 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:53:08,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-16 12:53:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:53:08,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:53:08,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065649758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:08,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:53:08,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-11-16 12:53:08,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884672722] [2022-11-16 12:53:08,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:08,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:53:08,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:53:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:53:08,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:53:08,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 380 [2022-11-16 12:53:08,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 345 transitions, 762 flow. Second operand has 6 states, 6 states have (on average 225.33333333333334) internal successors, (1352), 6 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:53:08,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:53:08,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 380 [2022-11-16 12:53:08,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:54:02,266 INFO L130 PetriNetUnfolder]: 128912/276309 cut-off events. [2022-11-16 12:54:02,267 INFO L131 PetriNetUnfolder]: For 526/526 co-relation queries the response was YES.