./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/floating_read-15.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_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/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_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/floating_read-15.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/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_737b0ab9-8fda-4318-a48e-bc90550fecfe/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 abe6fcc2bea9781e0ab07417eb8616a5b638529e720de8eddec3568cb8edc6ea --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:12:05,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:12:05,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:12:05,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:12:05,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:12:05,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:12:05,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:12:05,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:12:05,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:12:05,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:12:05,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:12:05,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:12:05,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:12:05,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:12:05,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:12:05,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:12:05,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:12:05,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:12:05,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:12:05,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:12:05,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:12:05,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:12:05,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:12:05,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:12:05,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:12:05,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:12:05,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:12:05,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:12:05,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:12:05,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:12:05,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:12:05,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:12:05,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:12:05,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:12:05,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:12:05,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:12:05,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:12:05,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:12:05,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:12:05,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:12:05,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:12:05,223 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 11:12:05,265 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:12:05,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:12:05,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:12:05,267 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:12:05,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:12:05,268 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:12:05,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:12:05,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:12:05,269 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:12:05,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:12:05,271 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:12:05,271 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:12:05,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:12:05,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:12:05,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:12:05,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:12:05,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:12:05,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:12:05,273 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 11:12:05,273 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:12:05,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:12:05,274 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:12:05,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:12:05,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:12:05,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:12:05,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:12:05,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:12:05,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:12:05,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:12:05,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:12:05,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:12:05,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:12:05,279 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:12:05,279 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:12:05,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:12:05,280 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_737b0ab9-8fda-4318-a48e-bc90550fecfe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abe6fcc2bea9781e0ab07417eb8616a5b638529e720de8eddec3568cb8edc6ea [2022-11-16 11:12:05,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:12:05,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:12:05,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:12:05,616 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:12:05,617 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:12:05,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-deagle/floating_read-15.i [2022-11-16 11:12:05,696 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/data/b073030ad/418a15de841d4a379a99f2c709b03b58/FLAG6117a65e9 [2022-11-16 11:12:06,287 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:12:06,287 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/sv-benchmarks/c/pthread-deagle/floating_read-15.i [2022-11-16 11:12:06,301 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/data/b073030ad/418a15de841d4a379a99f2c709b03b58/FLAG6117a65e9 [2022-11-16 11:12:06,671 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/data/b073030ad/418a15de841d4a379a99f2c709b03b58 [2022-11-16 11:12:06,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:12:06,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:12:06,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:12:06,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:12:06,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:12:06,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:12:06" (1/1) ... [2022-11-16 11:12:06,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65678d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:06, skipping insertion in model container [2022-11-16 11:12:06,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:12:06" (1/1) ... [2022-11-16 11:12:06,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:12:06,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:12:07,195 WARN L1554 CHandler]: Possible shadowing of function thread [2022-11-16 11:12:07,211 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_737b0ab9-8fda-4318-a48e-bc90550fecfe/sv-benchmarks/c/pthread-deagle/floating_read-15.i[31197,31210] [2022-11-16 11:12:07,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:12:07,224 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:12:07,274 WARN L1554 CHandler]: Possible shadowing of function thread [2022-11-16 11:12:07,277 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_737b0ab9-8fda-4318-a48e-bc90550fecfe/sv-benchmarks/c/pthread-deagle/floating_read-15.i[31197,31210] [2022-11-16 11:12:07,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:12:07,332 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:12:07,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:07 WrapperNode [2022-11-16 11:12:07,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:12:07,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:12:07,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:12:07,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:12:07,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:07" (1/1) ... [2022-11-16 11:12:07,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:07" (1/1) ... [2022-11-16 11:12:07,389 INFO L138 Inliner]: procedures = 162, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-11-16 11:12:07,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:12:07,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:12:07,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:12:07,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:12:07,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:07" (1/1) ... [2022-11-16 11:12:07,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:07" (1/1) ... [2022-11-16 11:12:07,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:07" (1/1) ... [2022-11-16 11:12:07,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:07" (1/1) ... [2022-11-16 11:12:07,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:07" (1/1) ... [2022-11-16 11:12:07,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:07" (1/1) ... [2022-11-16 11:12:07,416 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:07" (1/1) ... [2022-11-16 11:12:07,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:07" (1/1) ... [2022-11-16 11:12:07,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:12:07,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:12:07,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:12:07,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:12:07,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:07" (1/1) ... [2022-11-16 11:12:07,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:12:07,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:07,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:12:07,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:12:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:12:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:12:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:12:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:12:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:12:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:12:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:12:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-11-16 11:12:07,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-11-16 11:12:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:12:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:12:07,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:12:07,513 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:12:07,678 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:12:07,680 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:12:07,947 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:12:07,984 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:12:07,984 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:12:07,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:12:07 BoogieIcfgContainer [2022-11-16 11:12:07,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:12:07,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:12:07,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:12:07,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:12:07,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:12:06" (1/3) ... [2022-11-16 11:12:07,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79533a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:12:07, skipping insertion in model container [2022-11-16 11:12:07,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:07" (2/3) ... [2022-11-16 11:12:07,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79533a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:12:07, skipping insertion in model container [2022-11-16 11:12:07,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:12:07" (3/3) ... [2022-11-16 11:12:07,998 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-15.i [2022-11-16 11:12:08,006 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:12:08,016 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:12:08,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-16 11:12:08,017 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:12:08,087 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 11:12:08,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 69 transitions, 146 flow [2022-11-16 11:12:08,187 INFO L130 PetriNetUnfolder]: 7/99 cut-off events. [2022-11-16 11:12:08,188 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:12:08,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 99 events. 7/99 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 156 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2022-11-16 11:12:08,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 69 transitions, 146 flow [2022-11-16 11:12:08,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 69 transitions, 146 flow [2022-11-16 11:12:08,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:12:08,232 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;@5bef23db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:12:08,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-16 11:12:08,243 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-16 11:12:08,243 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:12:08,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:08,244 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:08,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-16 11:12:08,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:08,255 INFO L85 PathProgramCache]: Analyzing trace with hash 198072736, now seen corresponding path program 1 times [2022-11-16 11:12:08,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:08,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140652051] [2022-11-16 11:12:08,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:08,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:08,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:08,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140652051] [2022-11-16 11:12:08,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140652051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:08,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:08,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:12:08,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879641723] [2022-11-16 11:12:08,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:08,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:12:08,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:08,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:12:08,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:12:08,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2022-11-16 11:12:08,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:08,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:08,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2022-11-16 11:12:08,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:08,609 INFO L130 PetriNetUnfolder]: 1/89 cut-off events. [2022-11-16 11:12:08,609 INFO L131 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2022-11-16 11:12:08,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 89 events. 1/89 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 6/85 useless extension candidates. Maximal degree in co-relation 4. Up to 5 conditions per place. [2022-11-16 11:12:08,611 INFO L137 encePairwiseOnDemand]: 64/69 looper letters, 4 selfloop transitions, 0 changer transitions 8/63 dead transitions. [2022-11-16 11:12:08,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 142 flow [2022-11-16 11:12:08,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:12:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:12:08,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 127 transitions. [2022-11-16 11:12:08,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9202898550724637 [2022-11-16 11:12:08,629 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 127 transitions. [2022-11-16 11:12:08,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 127 transitions. [2022-11-16 11:12:08,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:08,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 127 transitions. [2022-11-16 11:12:08,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:08,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:08,645 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:08,647 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 146 flow. Second operand 2 states and 127 transitions. [2022-11-16 11:12:08,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 142 flow [2022-11-16 11:12:08,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:08,659 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 118 flow [2022-11-16 11:12:08,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2022-11-16 11:12:08,666 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2022-11-16 11:12:08,667 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 118 flow [2022-11-16 11:12:08,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:08,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:08,667 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] [2022-11-16 11:12:08,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:12:08,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-16 11:12:08,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:08,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1680329326, now seen corresponding path program 1 times [2022-11-16 11:12:08,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:08,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832087626] [2022-11-16 11:12:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:08,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:08,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:08,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832087626] [2022-11-16 11:12:08,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832087626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:08,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:08,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:08,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546187745] [2022-11-16 11:12:08,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:08,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:08,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:08,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:08,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 69 [2022-11-16 11:12:08,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:08,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:08,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 69 [2022-11-16 11:12:08,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:08,945 INFO L130 PetriNetUnfolder]: 5/94 cut-off events. [2022-11-16 11:12:08,947 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:12:08,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 94 events. 5/94 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 1 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 122. Up to 16 conditions per place. [2022-11-16 11:12:08,949 INFO L137 encePairwiseOnDemand]: 66/69 looper letters, 12 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2022-11-16 11:12:08,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 152 flow [2022-11-16 11:12:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:08,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:12:08,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2022-11-16 11:12:08,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8260869565217391 [2022-11-16 11:12:08,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 171 transitions. [2022-11-16 11:12:08,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 171 transitions. [2022-11-16 11:12:08,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:08,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 171 transitions. [2022-11-16 11:12:08,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:08,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:08,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:08,963 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 118 flow. Second operand 3 states and 171 transitions. [2022-11-16 11:12:08,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 152 flow [2022-11-16 11:12:08,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:08,965 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 126 flow [2022-11-16 11:12:08,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2022-11-16 11:12:08,966 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2022-11-16 11:12:08,967 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 126 flow [2022-11-16 11:12:08,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:08,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:08,968 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] [2022-11-16 11:12:08,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:12:08,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-16 11:12:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:08,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1418593939, now seen corresponding path program 1 times [2022-11-16 11:12:08,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:08,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827571412] [2022-11-16 11:12:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:08,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:09,146 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 11:12:09,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:09,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827571412] [2022-11-16 11:12:09,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827571412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:09,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041898141] [2022-11-16 11:12:09,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:09,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:09,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:09,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:09,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:12:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:09,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:12:09,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:09,260 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 11:12:09,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:12:09,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041898141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:09,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:12:09,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-16 11:12:09,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034567491] [2022-11-16 11:12:09,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:09,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:09,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:09,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:09,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2022-11-16 11:12:09,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:09,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2022-11-16 11:12:09,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:09,300 INFO L130 PetriNetUnfolder]: 1/99 cut-off events. [2022-11-16 11:12:09,300 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-16 11:12:09,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 99 events. 1/99 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 127 event pairs, 0 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 121. Up to 8 conditions per place. [2022-11-16 11:12:09,301 INFO L137 encePairwiseOnDemand]: 65/69 looper letters, 7 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2022-11-16 11:12:09,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 155 flow [2022-11-16 11:12:09,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:09,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:12:09,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2022-11-16 11:12:09,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2022-11-16 11:12:09,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 179 transitions. [2022-11-16 11:12:09,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 179 transitions. [2022-11-16 11:12:09,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:09,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 179 transitions. [2022-11-16 11:12:09,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,306 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 126 flow. Second operand 3 states and 179 transitions. [2022-11-16 11:12:09,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 155 flow [2022-11-16 11:12:09,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:12:09,308 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 144 flow [2022-11-16 11:12:09,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2022-11-16 11:12:09,309 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2022-11-16 11:12:09,310 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 144 flow [2022-11-16 11:12:09,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:09,310 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] [2022-11-16 11:12:09,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:09,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:09,515 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-16 11:12:09,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:09,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1765606273, now seen corresponding path program 1 times [2022-11-16 11:12:09,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:09,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868343137] [2022-11-16 11:12:09,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:09,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:12:09,535 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:12:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:12:09,572 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:12:09,573 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:12:09,574 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-16 11:12:09,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2022-11-16 11:12:09,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2022-11-16 11:12:09,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2022-11-16 11:12:09,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2022-11-16 11:12:09,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2022-11-16 11:12:09,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:12:09,579 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-16 11:12:09,581 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:12:09,581 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:12:09,598 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:12:09,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 172 flow [2022-11-16 11:12:09,649 INFO L130 PetriNetUnfolder]: 13/168 cut-off events. [2022-11-16 11:12:09,649 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 11:12:09,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 168 events. 13/168 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 334 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 101. Up to 8 conditions per place. [2022-11-16 11:12:09,650 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 77 transitions, 172 flow [2022-11-16 11:12:09,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 172 flow [2022-11-16 11:12:09,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:12:09,657 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;@5bef23db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:12:09,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 11:12:09,661 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-16 11:12:09,662 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:12:09,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:09,663 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:09,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-16 11:12:09,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:09,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1280739507, now seen corresponding path program 1 times [2022-11-16 11:12:09,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:09,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569288188] [2022-11-16 11:12:09,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:09,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:09,693 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 11:12:09,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:09,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569288188] [2022-11-16 11:12:09,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569288188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:09,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:09,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:12:09,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836741080] [2022-11-16 11:12:09,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:09,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:12:09,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:09,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:12:09,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:12:09,696 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 77 [2022-11-16 11:12:09,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:09,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 77 [2022-11-16 11:12:09,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:09,734 INFO L130 PetriNetUnfolder]: 7/185 cut-off events. [2022-11-16 11:12:09,734 INFO L131 PetriNetUnfolder]: For 31/40 co-relation queries the response was YES. [2022-11-16 11:12:09,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 185 events. 7/185 cut-off events. For 31/40 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 461 event pairs, 4 based on Foata normal form. 12/175 useless extension candidates. Maximal degree in co-relation 95. Up to 18 conditions per place. [2022-11-16 11:12:09,736 INFO L137 encePairwiseOnDemand]: 71/77 looper letters, 7 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2022-11-16 11:12:09,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 172 flow [2022-11-16 11:12:09,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:12:09,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:12:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 139 transitions. [2022-11-16 11:12:09,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9025974025974026 [2022-11-16 11:12:09,738 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 139 transitions. [2022-11-16 11:12:09,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 139 transitions. [2022-11-16 11:12:09,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:09,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 139 transitions. [2022-11-16 11:12:09,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,740 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,740 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 172 flow. Second operand 2 states and 139 transitions. [2022-11-16 11:12:09,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 172 flow [2022-11-16 11:12:09,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:09,742 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 158 flow [2022-11-16 11:12:09,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=158, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2022-11-16 11:12:09,743 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, -3 predicate places. [2022-11-16 11:12:09,743 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 158 flow [2022-11-16 11:12:09,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:09,744 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] [2022-11-16 11:12:09,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:12:09,744 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-16 11:12:09,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:09,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1222014171, now seen corresponding path program 1 times [2022-11-16 11:12:09,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:09,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474695803] [2022-11-16 11:12:09,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:09,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:09,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:09,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474695803] [2022-11-16 11:12:09,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474695803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:09,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:09,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:09,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635694461] [2022-11-16 11:12:09,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:09,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:09,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:09,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 77 [2022-11-16 11:12:09,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:09,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 77 [2022-11-16 11:12:09,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:09,868 INFO L130 PetriNetUnfolder]: 32/330 cut-off events. [2022-11-16 11:12:09,869 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-16 11:12:09,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 330 events. 32/330 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1439 event pairs, 12 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 428. Up to 69 conditions per place. [2022-11-16 11:12:09,874 INFO L137 encePairwiseOnDemand]: 74/77 looper letters, 17 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-11-16 11:12:09,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 206 flow [2022-11-16 11:12:09,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:12:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2022-11-16 11:12:09,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8138528138528138 [2022-11-16 11:12:09,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2022-11-16 11:12:09,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2022-11-16 11:12:09,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:09,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2022-11-16 11:12:09,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,881 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,881 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 158 flow. Second operand 3 states and 188 transitions. [2022-11-16 11:12:09,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 206 flow [2022-11-16 11:12:09,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 206 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:09,885 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 170 flow [2022-11-16 11:12:09,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2022-11-16 11:12:09,892 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2022-11-16 11:12:09,892 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 170 flow [2022-11-16 11:12:09,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:09,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:09,893 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] [2022-11-16 11:12:09,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:12:09,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-16 11:12:09,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:09,893 INFO L85 PathProgramCache]: Analyzing trace with hash 936904422, now seen corresponding path program 1 times [2022-11-16 11:12:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:09,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749243157] [2022-11-16 11:12:09,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:09,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:09,996 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 11:12:09,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:09,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749243157] [2022-11-16 11:12:09,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749243157] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:09,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638298351] [2022-11-16 11:12:09,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:09,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:09,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:09,998 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:10,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:12:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:10,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:12:10,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:10,102 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 11:12:10,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:12:10,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638298351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:10,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:12:10,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-16 11:12:10,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40675656] [2022-11-16 11:12:10,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:10,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:10,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:10,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:10,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:10,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 77 [2022-11-16 11:12:10,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:10,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:10,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 77 [2022-11-16 11:12:10,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:10,208 INFO L130 PetriNetUnfolder]: 23/385 cut-off events. [2022-11-16 11:12:10,209 INFO L131 PetriNetUnfolder]: For 54/64 co-relation queries the response was YES. [2022-11-16 11:12:10,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 385 events. 23/385 cut-off events. For 54/64 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1936 event pairs, 6 based on Foata normal form. 3/345 useless extension candidates. Maximal degree in co-relation 476. Up to 41 conditions per place. [2022-11-16 11:12:10,211 INFO L137 encePairwiseOnDemand]: 72/77 looper letters, 11 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2022-11-16 11:12:10,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 216 flow [2022-11-16 11:12:10,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:10,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:12:10,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2022-11-16 11:12:10,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8484848484848485 [2022-11-16 11:12:10,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2022-11-16 11:12:10,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2022-11-16 11:12:10,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:10,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2022-11-16 11:12:10,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:10,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:10,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:10,217 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 170 flow. Second operand 3 states and 196 transitions. [2022-11-16 11:12:10,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 216 flow [2022-11-16 11:12:10,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:12:10,220 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 198 flow [2022-11-16 11:12:10,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2022-11-16 11:12:10,221 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2022-11-16 11:12:10,221 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 198 flow [2022-11-16 11:12:10,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:10,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:10,222 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] [2022-11-16 11:12:10,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:10,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 11:12:10,427 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-16 11:12:10,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:10,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1671195300, now seen corresponding path program 1 times [2022-11-16 11:12:10,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:10,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656434227] [2022-11-16 11:12:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:10,576 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 11:12:10,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:10,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656434227] [2022-11-16 11:12:10,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656434227] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:10,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608501514] [2022-11-16 11:12:10,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:10,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:10,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:10,587 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:10,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:12:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:10,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:12:10,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:10,737 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 11:12:10,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:12:10,803 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 11:12:10,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608501514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:12:10,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:12:10,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:12:10,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252941701] [2022-11-16 11:12:10,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:12:10,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:12:10,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:10,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:12:10,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:12:10,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 77 [2022-11-16 11:12:10,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 198 flow. Second operand has 10 states, 10 states have (on average 57.5) internal successors, (575), 10 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:10,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:10,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 77 [2022-11-16 11:12:10,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:10,973 INFO L130 PetriNetUnfolder]: 27/121 cut-off events. [2022-11-16 11:12:10,973 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-11-16 11:12:10,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 121 events. 27/121 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 310 event pairs, 0 based on Foata normal form. 6/127 useless extension candidates. Maximal degree in co-relation 242. Up to 31 conditions per place. [2022-11-16 11:12:10,974 INFO L137 encePairwiseOnDemand]: 72/77 looper letters, 21 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2022-11-16 11:12:10,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 212 flow [2022-11-16 11:12:10,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:12:10,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:12:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 525 transitions. [2022-11-16 11:12:10,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2022-11-16 11:12:10,977 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 525 transitions. [2022-11-16 11:12:10,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 525 transitions. [2022-11-16 11:12:10,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:10,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 525 transitions. [2022-11-16 11:12:10,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 58.333333333333336) internal successors, (525), 9 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:10,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:10,982 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:10,983 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 198 flow. Second operand 9 states and 525 transitions. [2022-11-16 11:12:10,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 212 flow [2022-11-16 11:12:10,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 210 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:10,988 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 124 flow [2022-11-16 11:12:10,988 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=124, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2022-11-16 11:12:10,990 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, -17 predicate places. [2022-11-16 11:12:10,990 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 124 flow [2022-11-16 11:12:10,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.5) internal successors, (575), 10 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:10,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:10,991 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:11,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:11,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:11,196 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-16 11:12:11,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:11,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1513828090, now seen corresponding path program 1 times [2022-11-16 11:12:11,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:11,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303568976] [2022-11-16 11:12:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:11,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:12:11,227 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:12:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:12:11,252 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:12:11,254 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:12:11,255 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-16 11:12:11,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2022-11-16 11:12:11,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2022-11-16 11:12:11,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2022-11-16 11:12:11,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2022-11-16 11:12:11,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2022-11-16 11:12:11,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2022-11-16 11:12:11,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:12:11,259 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 11:12:11,259 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:12:11,259 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:12:11,285 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:12:11,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 200 flow [2022-11-16 11:12:11,350 INFO L130 PetriNetUnfolder]: 24/282 cut-off events. [2022-11-16 11:12:11,351 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 11:12:11,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 282 events. 24/282 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 728 event pairs, 1 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 176. Up to 16 conditions per place. [2022-11-16 11:12:11,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 85 transitions, 200 flow [2022-11-16 11:12:11,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 85 transitions, 200 flow [2022-11-16 11:12:11,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:12:11,358 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;@5bef23db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:12:11,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 11:12:11,361 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-16 11:12:11,361 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:12:11,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:11,361 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:11,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-16 11:12:11,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:11,362 INFO L85 PathProgramCache]: Analyzing trace with hash -291591166, now seen corresponding path program 1 times [2022-11-16 11:12:11,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:11,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740169985] [2022-11-16 11:12:11,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:11,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:11,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:11,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740169985] [2022-11-16 11:12:11,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740169985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:11,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:11,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:12:11,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559865710] [2022-11-16 11:12:11,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:11,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:12:11,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:11,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:12:11,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:12:11,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2022-11-16 11:12:11,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 200 flow. Second operand has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:11,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:11,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2022-11-16 11:12:11,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:11,475 INFO L130 PetriNetUnfolder]: 36/448 cut-off events. [2022-11-16 11:12:11,475 INFO L131 PetriNetUnfolder]: For 115/170 co-relation queries the response was YES. [2022-11-16 11:12:11,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 448 events. 36/448 cut-off events. For 115/170 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2013 event pairs, 27 based on Foata normal form. 28/420 useless extension candidates. Maximal degree in co-relation 285. Up to 68 conditions per place. [2022-11-16 11:12:11,478 INFO L137 encePairwiseOnDemand]: 78/85 looper letters, 10 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2022-11-16 11:12:11,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 77 transitions, 204 flow [2022-11-16 11:12:11,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:12:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:12:11,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 151 transitions. [2022-11-16 11:12:11,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.888235294117647 [2022-11-16 11:12:11,480 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 151 transitions. [2022-11-16 11:12:11,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 151 transitions. [2022-11-16 11:12:11,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:11,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 151 transitions. [2022-11-16 11:12:11,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:11,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:11,481 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:11,481 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 200 flow. Second operand 2 states and 151 transitions. [2022-11-16 11:12:11,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 77 transitions, 204 flow [2022-11-16 11:12:11,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 204 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:11,484 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 184 flow [2022-11-16 11:12:11,484 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=184, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2022-11-16 11:12:11,484 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2022-11-16 11:12:11,485 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 184 flow [2022-11-16 11:12:11,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:11,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:11,485 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] [2022-11-16 11:12:11,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:12:11,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-16 11:12:11,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:11,486 INFO L85 PathProgramCache]: Analyzing trace with hash -399494064, now seen corresponding path program 1 times [2022-11-16 11:12:11,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:11,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601731149] [2022-11-16 11:12:11,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:11,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:11,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:11,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:11,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601731149] [2022-11-16 11:12:11,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601731149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:11,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:11,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:11,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353617401] [2022-11-16 11:12:11,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:11,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:11,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:11,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:11,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:11,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 85 [2022-11-16 11:12:11,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:11,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:11,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 85 [2022-11-16 11:12:11,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:11,655 INFO L130 PetriNetUnfolder]: 124/761 cut-off events. [2022-11-16 11:12:11,656 INFO L131 PetriNetUnfolder]: For 107/116 co-relation queries the response was YES. [2022-11-16 11:12:11,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 761 events. 124/761 cut-off events. For 107/116 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4432 event pairs, 67 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 1050. Up to 219 conditions per place. [2022-11-16 11:12:11,660 INFO L137 encePairwiseOnDemand]: 82/85 looper letters, 20 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2022-11-16 11:12:11,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 238 flow [2022-11-16 11:12:11,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:12:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2022-11-16 11:12:11,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.796078431372549 [2022-11-16 11:12:11,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 203 transitions. [2022-11-16 11:12:11,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 203 transitions. [2022-11-16 11:12:11,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:11,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 203 transitions. [2022-11-16 11:12:11,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:11,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:11,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:11,665 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 184 flow. Second operand 3 states and 203 transitions. [2022-11-16 11:12:11,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 238 flow [2022-11-16 11:12:11,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 82 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:11,668 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 196 flow [2022-11-16 11:12:11,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2022-11-16 11:12:11,669 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2022-11-16 11:12:11,669 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 196 flow [2022-11-16 11:12:11,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:11,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:11,669 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] [2022-11-16 11:12:11,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:12:11,670 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-16 11:12:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:11,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1587672897, now seen corresponding path program 1 times [2022-11-16 11:12:11,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:11,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830157102] [2022-11-16 11:12:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:11,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:11,773 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 11:12:11,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:11,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830157102] [2022-11-16 11:12:11,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830157102] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:11,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599093033] [2022-11-16 11:12:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:11,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:11,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:11,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:11,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:12:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:11,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:12:11,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:11,884 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 11:12:11,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:12:11,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599093033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:11,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:12:11,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-16 11:12:11,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168163472] [2022-11-16 11:12:11,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:11,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:11,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:11,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:11,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:11,890 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 85 [2022-11-16 11:12:11,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:11,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:11,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 85 [2022-11-16 11:12:11,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:12,076 INFO L130 PetriNetUnfolder]: 123/1143 cut-off events. [2022-11-16 11:12:12,077 INFO L131 PetriNetUnfolder]: For 212/269 co-relation queries the response was YES. [2022-11-16 11:12:12,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1143 events. 123/1143 cut-off events. For 212/269 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8145 event pairs, 40 based on Foata normal form. 6/1018 useless extension candidates. Maximal degree in co-relation 1468. Up to 166 conditions per place. [2022-11-16 11:12:12,085 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 15 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2022-11-16 11:12:12,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 259 flow [2022-11-16 11:12:12,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:12,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:12:12,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2022-11-16 11:12:12,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8352941176470589 [2022-11-16 11:12:12,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2022-11-16 11:12:12,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2022-11-16 11:12:12,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:12,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2022-11-16 11:12:12,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:12,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:12,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:12,090 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 196 flow. Second operand 3 states and 213 transitions. [2022-11-16 11:12:12,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 259 flow [2022-11-16 11:12:12,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 85 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:12:12,094 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 232 flow [2022-11-16 11:12:12,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2022-11-16 11:12:12,096 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 2 predicate places. [2022-11-16 11:12:12,097 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 232 flow [2022-11-16 11:12:12,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:12,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:12,097 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] [2022-11-16 11:12:12,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:12,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:12,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-16 11:12:12,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:12,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2109476918, now seen corresponding path program 1 times [2022-11-16 11:12:12,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:12,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861808693] [2022-11-16 11:12:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:12,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:12,384 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 11:12:12,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:12,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861808693] [2022-11-16 11:12:12,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861808693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:12,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686973224] [2022-11-16 11:12:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:12,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:12,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:12,386 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:12,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:12:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:12,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:12:12,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:12,511 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 11:12:12,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:12:12,567 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 11:12:12,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686973224] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:12:12,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:12:12,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:12:12,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278205091] [2022-11-16 11:12:12,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:12:12,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:12:12,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:12:12,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:12:12,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 85 [2022-11-16 11:12:12,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 232 flow. Second operand has 10 states, 10 states have (on average 61.5) internal successors, (615), 10 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:12,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:12,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 85 [2022-11-16 11:12:12,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:12,858 INFO L130 PetriNetUnfolder]: 197/1266 cut-off events. [2022-11-16 11:12:12,858 INFO L131 PetriNetUnfolder]: For 431/454 co-relation queries the response was YES. [2022-11-16 11:12:12,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 1266 events. 197/1266 cut-off events. For 431/454 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 8658 event pairs, 34 based on Foata normal form. 6/1177 useless extension candidates. Maximal degree in co-relation 2009. Up to 203 conditions per place. [2022-11-16 11:12:12,868 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 35 selfloop transitions, 9 changer transitions 0/104 dead transitions. [2022-11-16 11:12:12,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 104 transitions, 390 flow [2022-11-16 11:12:12,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:12:12,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:12:12,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 574 transitions. [2022-11-16 11:12:12,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7503267973856209 [2022-11-16 11:12:12,870 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 574 transitions. [2022-11-16 11:12:12,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 574 transitions. [2022-11-16 11:12:12,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:12,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 574 transitions. [2022-11-16 11:12:12,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.77777777777778) internal successors, (574), 9 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:12,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:12,875 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:12,875 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 232 flow. Second operand 9 states and 574 transitions. [2022-11-16 11:12:12,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 104 transitions, 390 flow [2022-11-16 11:12:12,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:12:12,880 INFO L231 Difference]: Finished difference. Result has 97 places, 88 transitions, 272 flow [2022-11-16 11:12:12,880 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=272, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2022-11-16 11:12:12,881 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 11 predicate places. [2022-11-16 11:12:12,881 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 272 flow [2022-11-16 11:12:12,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.5) internal successors, (615), 10 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:12,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:12,882 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2022-11-16 11:12:12,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 11:12:13,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:13,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-16 11:12:13,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:13,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1472767584, now seen corresponding path program 1 times [2022-11-16 11:12:13,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:13,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471983201] [2022-11-16 11:12:13,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:13,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:12:13,115 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:12:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:12:13,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:12:13,148 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:12:13,148 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-11-16 11:12:13,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2022-11-16 11:12:13,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2022-11-16 11:12:13,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2022-11-16 11:12:13,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2022-11-16 11:12:13,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2022-11-16 11:12:13,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2022-11-16 11:12:13,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2022-11-16 11:12:13,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:12:13,152 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 11:12:13,153 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:12:13,153 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 11:12:13,185 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:12:13,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 93 transitions, 230 flow [2022-11-16 11:12:13,272 INFO L130 PetriNetUnfolder]: 47/488 cut-off events. [2022-11-16 11:12:13,272 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-16 11:12:13,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 488 events. 47/488 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1723 event pairs, 6 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 302. Up to 32 conditions per place. [2022-11-16 11:12:13,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 93 transitions, 230 flow [2022-11-16 11:12:13,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 93 transitions, 230 flow [2022-11-16 11:12:13,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:12:13,277 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;@5bef23db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:12:13,277 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-16 11:12:13,280 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-16 11:12:13,280 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:12:13,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:13,281 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:13,281 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:12:13,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:13,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1129449537, now seen corresponding path program 1 times [2022-11-16 11:12:13,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:13,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719952196] [2022-11-16 11:12:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:13,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:13,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:13,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719952196] [2022-11-16 11:12:13,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719952196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:13,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:13,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:12:13,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262535966] [2022-11-16 11:12:13,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:13,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:12:13,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:13,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:12:13,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:12:13,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 93 [2022-11-16 11:12:13,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 230 flow. Second operand has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:13,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:13,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 93 [2022-11-16 11:12:13,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:13,508 INFO L130 PetriNetUnfolder]: 157/1229 cut-off events. [2022-11-16 11:12:13,508 INFO L131 PetriNetUnfolder]: For 498/783 co-relation queries the response was YES. [2022-11-16 11:12:13,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 1229 events. 157/1229 cut-off events. For 498/783 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8156 event pairs, 128 based on Foata normal form. 76/1146 useless extension candidates. Maximal degree in co-relation 911. Up to 250 conditions per place. [2022-11-16 11:12:13,517 INFO L137 encePairwiseOnDemand]: 85/93 looper letters, 13 selfloop transitions, 0 changer transitions 0/84 dead transitions. [2022-11-16 11:12:13,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 84 transitions, 238 flow [2022-11-16 11:12:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:12:13,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:12:13,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 163 transitions. [2022-11-16 11:12:13,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8763440860215054 [2022-11-16 11:12:13,519 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 163 transitions. [2022-11-16 11:12:13,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 163 transitions. [2022-11-16 11:12:13,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:13,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 163 transitions. [2022-11-16 11:12:13,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:13,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:13,522 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:13,523 INFO L175 Difference]: Start difference. First operand has 95 places, 93 transitions, 230 flow. Second operand 2 states and 163 transitions. [2022-11-16 11:12:13,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 84 transitions, 238 flow [2022-11-16 11:12:13,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:13,525 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 212 flow [2022-11-16 11:12:13,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=212, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2022-11-16 11:12:13,527 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -5 predicate places. [2022-11-16 11:12:13,527 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 212 flow [2022-11-16 11:12:13,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:13,529 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:13,529 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] [2022-11-16 11:12:13,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:12:13,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:12:13,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:13,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1110771917, now seen corresponding path program 1 times [2022-11-16 11:12:13,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:13,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275032823] [2022-11-16 11:12:13,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:13,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:13,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:13,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275032823] [2022-11-16 11:12:13,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275032823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:13,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:13,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:13,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425334768] [2022-11-16 11:12:13,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:13,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:13,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:13,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:13,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 93 [2022-11-16 11:12:13,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:13,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:13,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 93 [2022-11-16 11:12:13,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:13,881 INFO L130 PetriNetUnfolder]: 416/2006 cut-off events. [2022-11-16 11:12:13,881 INFO L131 PetriNetUnfolder]: For 483/519 co-relation queries the response was YES. [2022-11-16 11:12:13,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2881 conditions, 2006 events. 416/2006 cut-off events. For 483/519 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 14422 event pairs, 266 based on Foata normal form. 0/1809 useless extension candidates. Maximal degree in co-relation 2874. Up to 649 conditions per place. [2022-11-16 11:12:13,896 INFO L137 encePairwiseOnDemand]: 90/93 looper letters, 23 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-11-16 11:12:13,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 272 flow [2022-11-16 11:12:13,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:12:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2022-11-16 11:12:13,898 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7813620071684588 [2022-11-16 11:12:13,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2022-11-16 11:12:13,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2022-11-16 11:12:13,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:13,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2022-11-16 11:12:13,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:13,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:13,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:13,901 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 212 flow. Second operand 3 states and 218 transitions. [2022-11-16 11:12:13,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 272 flow [2022-11-16 11:12:13,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:13,904 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 224 flow [2022-11-16 11:12:13,904 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2022-11-16 11:12:13,905 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -2 predicate places. [2022-11-16 11:12:13,906 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 224 flow [2022-11-16 11:12:13,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:13,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:13,907 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] [2022-11-16 11:12:13,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:12:13,907 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:12:13,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:13,908 INFO L85 PathProgramCache]: Analyzing trace with hash -924067932, now seen corresponding path program 1 times [2022-11-16 11:12:13,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:13,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163716246] [2022-11-16 11:12:13,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:13,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:14,003 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 11:12:14,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:14,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163716246] [2022-11-16 11:12:14,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163716246] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:14,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792163038] [2022-11-16 11:12:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:14,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:14,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:14,006 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:14,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:12:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:14,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:12:14,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:14,101 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 11:12:14,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:12:14,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792163038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:14,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:12:14,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-16 11:12:14,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175209946] [2022-11-16 11:12:14,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:14,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:14,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:14,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:14,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:14,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 93 [2022-11-16 11:12:14,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:14,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:14,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 93 [2022-11-16 11:12:14,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:14,652 INFO L130 PetriNetUnfolder]: 492/3400 cut-off events. [2022-11-16 11:12:14,653 INFO L131 PetriNetUnfolder]: For 894/1135 co-relation queries the response was YES. [2022-11-16 11:12:14,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4497 conditions, 3400 events. 492/3400 cut-off events. For 894/1135 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 31099 event pairs, 183 based on Foata normal form. 10/3034 useless extension candidates. Maximal degree in co-relation 4488. Up to 584 conditions per place. [2022-11-16 11:12:14,675 INFO L137 encePairwiseOnDemand]: 86/93 looper letters, 19 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2022-11-16 11:12:14,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 304 flow [2022-11-16 11:12:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:12:14,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2022-11-16 11:12:14,677 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8243727598566308 [2022-11-16 11:12:14,677 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2022-11-16 11:12:14,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2022-11-16 11:12:14,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:14,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2022-11-16 11:12:14,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:14,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:14,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:14,679 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 224 flow. Second operand 3 states and 230 transitions. [2022-11-16 11:12:14,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 304 flow [2022-11-16 11:12:14,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:12:14,683 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 268 flow [2022-11-16 11:12:14,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2022-11-16 11:12:14,684 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 1 predicate places. [2022-11-16 11:12:14,684 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 268 flow [2022-11-16 11:12:14,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:14,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:14,685 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] [2022-11-16 11:12:14,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:14,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:14,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:12:14,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:14,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1834592202, now seen corresponding path program 1 times [2022-11-16 11:12:14,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:14,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118352168] [2022-11-16 11:12:14,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:14,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:14,954 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 11:12:14,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:14,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118352168] [2022-11-16 11:12:14,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118352168] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:14,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126548245] [2022-11-16 11:12:14,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:14,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:14,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:14,958 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:14,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:12:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:15,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:12:15,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:15,078 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 11:12:15,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:12:15,117 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 11:12:15,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126548245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:12:15,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:12:15,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:12:15,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082984159] [2022-11-16 11:12:15,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:12:15,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:12:15,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:15,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:12:15,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:12:15,121 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 93 [2022-11-16 11:12:15,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 268 flow. Second operand has 10 states, 10 states have (on average 65.5) internal successors, (655), 10 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:15,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:15,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 93 [2022-11-16 11:12:15,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:15,805 INFO L130 PetriNetUnfolder]: 758/3763 cut-off events. [2022-11-16 11:12:15,806 INFO L131 PetriNetUnfolder]: For 1660/1759 co-relation queries the response was YES. [2022-11-16 11:12:15,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6254 conditions, 3763 events. 758/3763 cut-off events. For 1660/1759 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 33678 event pairs, 147 based on Foata normal form. 6/3474 useless extension candidates. Maximal degree in co-relation 6244. Up to 786 conditions per place. [2022-11-16 11:12:15,883 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 40 selfloop transitions, 9 changer transitions 0/113 dead transitions. [2022-11-16 11:12:15,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 113 transitions, 440 flow [2022-11-16 11:12:15,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:12:15,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:12:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 614 transitions. [2022-11-16 11:12:15,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7335722819593787 [2022-11-16 11:12:15,886 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 614 transitions. [2022-11-16 11:12:15,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 614 transitions. [2022-11-16 11:12:15,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:15,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 614 transitions. [2022-11-16 11:12:15,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.22222222222223) internal successors, (614), 9 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:15,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:15,891 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:15,891 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 268 flow. Second operand 9 states and 614 transitions. [2022-11-16 11:12:15,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 113 transitions, 440 flow [2022-11-16 11:12:15,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 113 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:12:15,896 INFO L231 Difference]: Finished difference. Result has 105 places, 96 transitions, 306 flow [2022-11-16 11:12:15,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=306, PETRI_PLACES=105, PETRI_TRANSITIONS=96} [2022-11-16 11:12:15,897 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, 10 predicate places. [2022-11-16 11:12:15,897 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 96 transitions, 306 flow [2022-11-16 11:12:15,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.5) internal successors, (655), 10 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:15,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:15,898 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-16 11:12:15,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:16,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:12:16,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:12:16,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:16,110 INFO L85 PathProgramCache]: Analyzing trace with hash -257989895, now seen corresponding path program 1 times [2022-11-16 11:12:16,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:16,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293896908] [2022-11-16 11:12:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:16,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:16,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:16,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293896908] [2022-11-16 11:12:16,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293896908] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:16,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57523012] [2022-11-16 11:12:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:16,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:16,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:16,259 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:16,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:12:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:16,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:12:16,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:16,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:12:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:16,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57523012] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:12:16,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:12:16,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:12:16,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470642137] [2022-11-16 11:12:16,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:12:16,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:12:16,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:16,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:12:16,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:12:16,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 93 [2022-11-16 11:12:16,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 96 transitions, 306 flow. Second operand has 18 states, 18 states have (on average 65.72222222222223) internal successors, (1183), 18 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:16,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:16,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 93 [2022-11-16 11:12:16,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:16,920 INFO L130 PetriNetUnfolder]: 279/649 cut-off events. [2022-11-16 11:12:16,920 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2022-11-16 11:12:16,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 649 events. 279/649 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3208 event pairs, 0 based on Foata normal form. 24/673 useless extension candidates. Maximal degree in co-relation 1741. Up to 295 conditions per place. [2022-11-16 11:12:16,927 INFO L137 encePairwiseOnDemand]: 88/93 looper letters, 50 selfloop transitions, 13 changer transitions 0/101 dead transitions. [2022-11-16 11:12:16,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 101 transitions, 486 flow [2022-11-16 11:12:16,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:12:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:12:16,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1010 transitions. [2022-11-16 11:12:16,932 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7240143369175627 [2022-11-16 11:12:16,932 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1010 transitions. [2022-11-16 11:12:16,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1010 transitions. [2022-11-16 11:12:16,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:16,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1010 transitions. [2022-11-16 11:12:16,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 67.33333333333333) internal successors, (1010), 15 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:16,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 93.0) internal successors, (1488), 16 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:16,939 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 93.0) internal successors, (1488), 16 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:16,940 INFO L175 Difference]: Start difference. First operand has 105 places, 96 transitions, 306 flow. Second operand 15 states and 1010 transitions. [2022-11-16 11:12:16,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 101 transitions, 486 flow [2022-11-16 11:12:16,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 101 transitions, 457 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-11-16 11:12:16,945 INFO L231 Difference]: Finished difference. Result has 88 places, 64 transitions, 216 flow [2022-11-16 11:12:16,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=216, PETRI_PLACES=88, PETRI_TRANSITIONS=64} [2022-11-16 11:12:16,946 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -7 predicate places. [2022-11-16 11:12:16,946 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 64 transitions, 216 flow [2022-11-16 11:12:16,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.72222222222223) internal successors, (1183), 18 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:16,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:16,947 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:16,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:17,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:17,153 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:12:17,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:17,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1165116785, now seen corresponding path program 1 times [2022-11-16 11:12:17,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:17,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256334577] [2022-11-16 11:12:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:17,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:12:17,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:12:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:12:17,189 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:12:17,189 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:12:17,190 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-16 11:12:17,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-11-16 11:12:17,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-11-16 11:12:17,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-11-16 11:12:17,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-11-16 11:12:17,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-11-16 11:12:17,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-11-16 11:12:17,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-11-16 11:12:17,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-11-16 11:12:17,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:12:17,192 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-16 11:12:17,192 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:12:17,192 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-16 11:12:17,223 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-16 11:12:17,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 101 transitions, 262 flow [2022-11-16 11:12:17,371 INFO L130 PetriNetUnfolder]: 98/882 cut-off events. [2022-11-16 11:12:17,371 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-16 11:12:17,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 882 events. 98/882 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4065 event pairs, 23 based on Foata normal form. 0/756 useless extension candidates. Maximal degree in co-relation 533. Up to 80 conditions per place. [2022-11-16 11:12:17,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 101 transitions, 262 flow [2022-11-16 11:12:17,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 101 transitions, 262 flow [2022-11-16 11:12:17,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:12:17,378 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;@5bef23db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:12:17,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-16 11:12:17,380 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-16 11:12:17,380 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:12:17,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:17,380 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:17,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-16 11:12:17,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:17,381 INFO L85 PathProgramCache]: Analyzing trace with hash 500652676, now seen corresponding path program 1 times [2022-11-16 11:12:17,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:17,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439749909] [2022-11-16 11:12:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:17,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:17,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:17,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439749909] [2022-11-16 11:12:17,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439749909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:17,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:17,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:12:17,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639447618] [2022-11-16 11:12:17,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:17,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:12:17,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:17,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:12:17,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:12:17,393 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 101 [2022-11-16 11:12:17,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 262 flow. Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:17,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:17,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 101 [2022-11-16 11:12:17,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:17,937 INFO L130 PetriNetUnfolder]: 622/3620 cut-off events. [2022-11-16 11:12:17,937 INFO L131 PetriNetUnfolder]: For 1636/2943 co-relation queries the response was YES. [2022-11-16 11:12:17,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5088 conditions, 3620 events. 622/3620 cut-off events. For 1636/2943 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 32123 event pairs, 527 based on Foata normal form. 221/3362 useless extension candidates. Maximal degree in co-relation 2965. Up to 892 conditions per place. [2022-11-16 11:12:17,964 INFO L137 encePairwiseOnDemand]: 92/101 looper letters, 16 selfloop transitions, 0 changer transitions 0/91 dead transitions. [2022-11-16 11:12:17,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 274 flow [2022-11-16 11:12:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:12:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:12:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 175 transitions. [2022-11-16 11:12:17,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8663366336633663 [2022-11-16 11:12:17,967 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 175 transitions. [2022-11-16 11:12:17,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 175 transitions. [2022-11-16 11:12:17,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:17,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 175 transitions. [2022-11-16 11:12:17,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:17,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:17,969 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:17,969 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 262 flow. Second operand 2 states and 175 transitions. [2022-11-16 11:12:17,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 274 flow [2022-11-16 11:12:17,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:17,972 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 242 flow [2022-11-16 11:12:17,972 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=242, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2022-11-16 11:12:17,973 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -6 predicate places. [2022-11-16 11:12:17,973 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 242 flow [2022-11-16 11:12:17,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:17,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:17,973 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] [2022-11-16 11:12:17,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:12:17,974 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-16 11:12:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1457844818, now seen corresponding path program 1 times [2022-11-16 11:12:17,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:17,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384330019] [2022-11-16 11:12:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:17,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:17,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:17,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384330019] [2022-11-16 11:12:17,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384330019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:17,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:17,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:17,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540970184] [2022-11-16 11:12:17,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:17,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:17,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:17,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:17,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:17,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 101 [2022-11-16 11:12:17,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:17,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:17,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 101 [2022-11-16 11:12:17,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:18,949 INFO L130 PetriNetUnfolder]: 1308/5425 cut-off events. [2022-11-16 11:12:18,949 INFO L131 PetriNetUnfolder]: For 1746/1863 co-relation queries the response was YES. [2022-11-16 11:12:18,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7984 conditions, 5425 events. 1308/5425 cut-off events. For 1746/1863 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 47422 event pairs, 923 based on Foata normal form. 0/4878 useless extension candidates. Maximal degree in co-relation 7976. Up to 1871 conditions per place. [2022-11-16 11:12:18,990 INFO L137 encePairwiseOnDemand]: 98/101 looper letters, 26 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2022-11-16 11:12:18,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 308 flow [2022-11-16 11:12:18,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:12:18,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2022-11-16 11:12:18,993 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.768976897689769 [2022-11-16 11:12:18,993 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2022-11-16 11:12:18,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2022-11-16 11:12:18,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:18,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2022-11-16 11:12:18,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:19,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:19,002 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:19,002 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 242 flow. Second operand 3 states and 233 transitions. [2022-11-16 11:12:19,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 308 flow [2022-11-16 11:12:19,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:19,008 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 254 flow [2022-11-16 11:12:19,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2022-11-16 11:12:19,009 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -3 predicate places. [2022-11-16 11:12:19,009 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 254 flow [2022-11-16 11:12:19,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:19,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:19,010 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] [2022-11-16 11:12:19,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:12:19,010 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-16 11:12:19,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:19,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1991616527, now seen corresponding path program 1 times [2022-11-16 11:12:19,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:19,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3510057] [2022-11-16 11:12:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:19,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:19,065 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 11:12:19,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:19,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3510057] [2022-11-16 11:12:19,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3510057] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:19,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910734582] [2022-11-16 11:12:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:19,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:19,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:19,071 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:19,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:12:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:19,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:12:19,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:19,244 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 11:12:19,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:12:19,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910734582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:19,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:12:19,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-16 11:12:19,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390964739] [2022-11-16 11:12:19,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:19,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:19,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:19,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:19,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:19,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 101 [2022-11-16 11:12:19,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:19,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:19,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 101 [2022-11-16 11:12:19,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:20,836 INFO L130 PetriNetUnfolder]: 1758/10152 cut-off events. [2022-11-16 11:12:20,837 INFO L131 PetriNetUnfolder]: For 3009/3879 co-relation queries the response was YES. [2022-11-16 11:12:20,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13706 conditions, 10152 events. 1758/10152 cut-off events. For 3009/3879 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 113090 event pairs, 725 based on Foata normal form. 15/9094 useless extension candidates. Maximal degree in co-relation 13696. Up to 1923 conditions per place. [2022-11-16 11:12:20,907 INFO L137 encePairwiseOnDemand]: 93/101 looper letters, 23 selfloop transitions, 7 changer transitions 0/103 dead transitions. [2022-11-16 11:12:20,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 351 flow [2022-11-16 11:12:20,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:20,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:12:20,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2022-11-16 11:12:20,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8151815181518152 [2022-11-16 11:12:20,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2022-11-16 11:12:20,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2022-11-16 11:12:20,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:20,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2022-11-16 11:12:20,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:20,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:20,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:20,912 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 254 flow. Second operand 3 states and 247 transitions. [2022-11-16 11:12:20,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 351 flow [2022-11-16 11:12:20,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:12:20,919 INFO L231 Difference]: Finished difference. Result has 104 places, 98 transitions, 306 flow [2022-11-16 11:12:20,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=104, PETRI_TRANSITIONS=98} [2022-11-16 11:12:20,920 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, 0 predicate places. [2022-11-16 11:12:20,920 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 98 transitions, 306 flow [2022-11-16 11:12:20,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:20,920 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:20,920 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] [2022-11-16 11:12:20,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:21,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:21,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-16 11:12:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1571631562, now seen corresponding path program 1 times [2022-11-16 11:12:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:21,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122309577] [2022-11-16 11:12:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:21,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:21,194 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 11:12:21,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:21,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122309577] [2022-11-16 11:12:21,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122309577] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:21,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843675091] [2022-11-16 11:12:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:21,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:21,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:21,196 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:21,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:12:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:21,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:12:21,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:21,332 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 11:12:21,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:12:21,369 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 11:12:21,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843675091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:12:21,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:12:21,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:12:21,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158524381] [2022-11-16 11:12:21,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:12:21,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:12:21,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:21,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:12:21,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:12:21,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 101 [2022-11-16 11:12:21,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 98 transitions, 306 flow. Second operand has 10 states, 10 states have (on average 69.5) internal successors, (695), 10 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:21,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:21,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 101 [2022-11-16 11:12:21,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:22,901 INFO L130 PetriNetUnfolder]: 2504/10876 cut-off events. [2022-11-16 11:12:22,901 INFO L131 PetriNetUnfolder]: For 5603/5939 co-relation queries the response was YES. [2022-11-16 11:12:22,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18520 conditions, 10876 events. 2504/10876 cut-off events. For 5603/5939 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 115076 event pairs, 585 based on Foata normal form. 6/9977 useless extension candidates. Maximal degree in co-relation 18509. Up to 2631 conditions per place. [2022-11-16 11:12:22,987 INFO L137 encePairwiseOnDemand]: 95/101 looper letters, 45 selfloop transitions, 9 changer transitions 0/122 dead transitions. [2022-11-16 11:12:22,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 122 transitions, 492 flow [2022-11-16 11:12:22,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:12:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:12:22,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 654 transitions. [2022-11-16 11:12:22,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7194719471947195 [2022-11-16 11:12:22,990 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 654 transitions. [2022-11-16 11:12:22,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 654 transitions. [2022-11-16 11:12:22,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:22,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 654 transitions. [2022-11-16 11:12:22,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.66666666666667) internal successors, (654), 9 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:22,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 101.0) internal successors, (1010), 10 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:22,996 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 101.0) internal successors, (1010), 10 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:22,996 INFO L175 Difference]: Start difference. First operand has 104 places, 98 transitions, 306 flow. Second operand 9 states and 654 transitions. [2022-11-16 11:12:22,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 122 transitions, 492 flow [2022-11-16 11:12:23,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 122 transitions, 478 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:12:23,005 INFO L231 Difference]: Finished difference. Result has 113 places, 104 transitions, 342 flow [2022-11-16 11:12:23,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=342, PETRI_PLACES=113, PETRI_TRANSITIONS=104} [2022-11-16 11:12:23,006 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, 9 predicate places. [2022-11-16 11:12:23,006 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 104 transitions, 342 flow [2022-11-16 11:12:23,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.5) internal successors, (695), 10 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:23,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:23,007 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-16 11:12:23,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:23,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 11:12:23,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-16 11:12:23,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:23,213 INFO L85 PathProgramCache]: Analyzing trace with hash -747920851, now seen corresponding path program 1 times [2022-11-16 11:12:23,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:23,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273238298] [2022-11-16 11:12:23,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:23,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:23,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:23,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273238298] [2022-11-16 11:12:23,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273238298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:23,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249991021] [2022-11-16 11:12:23,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:23,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:23,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:23,356 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:23,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:12:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:23,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:12:23,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:23,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:12:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:23,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249991021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:12:23,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:12:23,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:12:23,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959669744] [2022-11-16 11:12:23,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:12:23,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:12:23,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:23,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:12:23,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:12:23,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 101 [2022-11-16 11:12:23,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 104 transitions, 342 flow. Second operand has 18 states, 18 states have (on average 69.72222222222223) internal successors, (1255), 18 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:23,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:23,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 101 [2022-11-16 11:12:23,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:24,075 INFO L130 PetriNetUnfolder]: 743/1481 cut-off events. [2022-11-16 11:12:24,075 INFO L131 PetriNetUnfolder]: For 1554/1554 co-relation queries the response was YES. [2022-11-16 11:12:24,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4138 conditions, 1481 events. 743/1481 cut-off events. For 1554/1554 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8134 event pairs, 0 based on Foata normal form. 56/1537 useless extension candidates. Maximal degree in co-relation 4125. Up to 775 conditions per place. [2022-11-16 11:12:24,090 INFO L137 encePairwiseOnDemand]: 96/101 looper letters, 69 selfloop transitions, 16 changer transitions 0/127 dead transitions. [2022-11-16 11:12:24,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 127 transitions, 641 flow [2022-11-16 11:12:24,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:12:24,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:12:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1294 transitions. [2022-11-16 11:12:24,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7117711771177118 [2022-11-16 11:12:24,095 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1294 transitions. [2022-11-16 11:12:24,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1294 transitions. [2022-11-16 11:12:24,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:24,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1294 transitions. [2022-11-16 11:12:24,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 71.88888888888889) internal successors, (1294), 18 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:24,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 101.0) internal successors, (1919), 19 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:24,103 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 101.0) internal successors, (1919), 19 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:24,103 INFO L175 Difference]: Start difference. First operand has 113 places, 104 transitions, 342 flow. Second operand 18 states and 1294 transitions. [2022-11-16 11:12:24,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 127 transitions, 641 flow [2022-11-16 11:12:24,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 127 transitions, 600 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-16 11:12:24,108 INFO L231 Difference]: Finished difference. Result has 99 places, 73 transitions, 254 flow [2022-11-16 11:12:24,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=254, PETRI_PLACES=99, PETRI_TRANSITIONS=73} [2022-11-16 11:12:24,109 INFO L288 CegarLoopForPetriNet]: 104 programPoint places, -5 predicate places. [2022-11-16 11:12:24,109 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 73 transitions, 254 flow [2022-11-16 11:12:24,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.72222222222223) internal successors, (1255), 18 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:24,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:24,110 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:24,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:24,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 11:12:24,316 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-16 11:12:24,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:24,316 INFO L85 PathProgramCache]: Analyzing trace with hash -567303917, now seen corresponding path program 1 times [2022-11-16 11:12:24,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:24,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890645884] [2022-11-16 11:12:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:24,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:12:24,333 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:12:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:12:24,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:12:24,352 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:12:24,352 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-16 11:12:24,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2022-11-16 11:12:24,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2022-11-16 11:12:24,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2022-11-16 11:12:24,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2022-11-16 11:12:24,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2022-11-16 11:12:24,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2022-11-16 11:12:24,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2022-11-16 11:12:24,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2022-11-16 11:12:24,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2022-11-16 11:12:24,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 11:12:24,355 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-16 11:12:24,355 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:12:24,355 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-11-16 11:12:24,381 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-16 11:12:24,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 109 transitions, 296 flow [2022-11-16 11:12:24,586 INFO L130 PetriNetUnfolder]: 213/1660 cut-off events. [2022-11-16 11:12:24,586 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2022-11-16 11:12:24,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 1660 events. 213/1660 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9914 event pairs, 72 based on Foata normal form. 0/1433 useless extension candidates. Maximal degree in co-relation 981. Up to 192 conditions per place. [2022-11-16 11:12:24,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 109 transitions, 296 flow [2022-11-16 11:12:24,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 109 transitions, 296 flow [2022-11-16 11:12:24,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:12:24,601 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;@5bef23db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:12:24,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 11:12:24,602 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-16 11:12:24,603 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:12:24,603 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:24,603 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:24,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-16 11:12:24,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:24,603 INFO L85 PathProgramCache]: Analyzing trace with hash 303748177, now seen corresponding path program 1 times [2022-11-16 11:12:24,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:24,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308960813] [2022-11-16 11:12:24,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:24,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:24,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:24,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308960813] [2022-11-16 11:12:24,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308960813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:24,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:24,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:12:24,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694406216] [2022-11-16 11:12:24,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:24,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:12:24,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:24,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:12:24,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:12:24,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 109 [2022-11-16 11:12:24,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 296 flow. Second operand has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:24,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:24,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 109 [2022-11-16 11:12:24,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:26,269 INFO L130 PetriNetUnfolder]: 2323/11021 cut-off events. [2022-11-16 11:12:26,270 INFO L131 PetriNetUnfolder]: For 5791/11129 co-relation queries the response was YES. [2022-11-16 11:12:26,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15986 conditions, 11021 events. 2323/11021 cut-off events. For 5791/11129 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 120518 event pairs, 2016 based on Foata normal form. 651/10198 useless extension candidates. Maximal degree in co-relation 9663. Up to 3110 conditions per place. [2022-11-16 11:12:26,341 INFO L137 encePairwiseOnDemand]: 99/109 looper letters, 19 selfloop transitions, 0 changer transitions 0/98 dead transitions. [2022-11-16 11:12:26,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 98 transitions, 312 flow [2022-11-16 11:12:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:12:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:12:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 187 transitions. [2022-11-16 11:12:26,343 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8577981651376146 [2022-11-16 11:12:26,343 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 187 transitions. [2022-11-16 11:12:26,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 187 transitions. [2022-11-16 11:12:26,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:26,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 187 transitions. [2022-11-16 11:12:26,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:26,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:26,345 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:26,345 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 296 flow. Second operand 2 states and 187 transitions. [2022-11-16 11:12:26,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 98 transitions, 312 flow [2022-11-16 11:12:26,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 98 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:26,349 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 274 flow [2022-11-16 11:12:26,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=274, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2022-11-16 11:12:26,351 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, -7 predicate places. [2022-11-16 11:12:26,351 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 274 flow [2022-11-16 11:12:26,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:26,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:26,351 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] [2022-11-16 11:12:26,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 11:12:26,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-16 11:12:26,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash 641724639, now seen corresponding path program 1 times [2022-11-16 11:12:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:26,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075790219] [2022-11-16 11:12:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:26,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:26,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:26,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075790219] [2022-11-16 11:12:26,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075790219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:26,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:26,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:26,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001821278] [2022-11-16 11:12:26,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:26,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:26,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:26,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:26,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:26,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 109 [2022-11-16 11:12:26,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:26,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:26,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 109 [2022-11-16 11:12:26,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:28,674 INFO L130 PetriNetUnfolder]: 4032/15068 cut-off events. [2022-11-16 11:12:28,674 INFO L131 PetriNetUnfolder]: For 5972/6332 co-relation queries the response was YES. [2022-11-16 11:12:28,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22611 conditions, 15068 events. 4032/15068 cut-off events. For 5972/6332 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 155844 event pairs, 3034 based on Foata normal form. 0/13470 useless extension candidates. Maximal degree in co-relation 22602. Up to 5417 conditions per place. [2022-11-16 11:12:28,782 INFO L137 encePairwiseOnDemand]: 106/109 looper letters, 29 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2022-11-16 11:12:28,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 103 transitions, 346 flow [2022-11-16 11:12:28,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:12:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2022-11-16 11:12:28,783 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7584097859327217 [2022-11-16 11:12:28,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2022-11-16 11:12:28,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2022-11-16 11:12:28,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:28,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2022-11-16 11:12:28,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:28,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:28,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:28,786 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 274 flow. Second operand 3 states and 248 transitions. [2022-11-16 11:12:28,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 103 transitions, 346 flow [2022-11-16 11:12:28,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:28,790 INFO L231 Difference]: Finished difference. Result has 109 places, 99 transitions, 286 flow [2022-11-16 11:12:28,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=109, PETRI_TRANSITIONS=99} [2022-11-16 11:12:28,791 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, -4 predicate places. [2022-11-16 11:12:28,791 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 99 transitions, 286 flow [2022-11-16 11:12:28,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:28,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:28,792 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] [2022-11-16 11:12:28,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 11:12:28,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-16 11:12:28,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:28,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1744791682, now seen corresponding path program 1 times [2022-11-16 11:12:28,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:28,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333392300] [2022-11-16 11:12:28,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:28,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:28,841 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 11:12:28,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:28,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333392300] [2022-11-16 11:12:28,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333392300] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:28,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537478778] [2022-11-16 11:12:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:28,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:28,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:28,843 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:28,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:12:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:28,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:12:28,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:28,950 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 11:12:28,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:12:28,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537478778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:28,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:12:28,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-16 11:12:28,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573590194] [2022-11-16 11:12:28,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:28,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:28,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:28,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:28,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:28,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 109 [2022-11-16 11:12:28,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:28,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:28,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 109 [2022-11-16 11:12:28,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:32,885 INFO L130 PetriNetUnfolder]: 5989/30471 cut-off events. [2022-11-16 11:12:32,885 INFO L131 PetriNetUnfolder]: For 10616/13463 co-relation queries the response was YES. [2022-11-16 11:12:33,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41927 conditions, 30471 events. 5989/30471 cut-off events. For 10616/13463 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 400261 event pairs, 2688 based on Foata normal form. 21/27397 useless extension candidates. Maximal degree in co-relation 41916. Up to 6167 conditions per place. [2022-11-16 11:12:33,136 INFO L137 encePairwiseOnDemand]: 100/109 looper letters, 27 selfloop transitions, 8 changer transitions 0/112 dead transitions. [2022-11-16 11:12:33,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 112 transitions, 400 flow [2022-11-16 11:12:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:33,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:12:33,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2022-11-16 11:12:33,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8073394495412844 [2022-11-16 11:12:33,138 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2022-11-16 11:12:33,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2022-11-16 11:12:33,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:33,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2022-11-16 11:12:33,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:33,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:33,143 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:33,143 INFO L175 Difference]: Start difference. First operand has 109 places, 99 transitions, 286 flow. Second operand 3 states and 264 transitions. [2022-11-16 11:12:33,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 112 transitions, 400 flow [2022-11-16 11:12:33,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 112 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:12:33,152 INFO L231 Difference]: Finished difference. Result has 112 places, 106 transitions, 346 flow [2022-11-16 11:12:33,152 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=112, PETRI_TRANSITIONS=106} [2022-11-16 11:12:33,153 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, -1 predicate places. [2022-11-16 11:12:33,153 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 106 transitions, 346 flow [2022-11-16 11:12:33,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:33,153 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:33,153 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] [2022-11-16 11:12:33,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:33,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 11:12:33,359 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-16 11:12:33,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:33,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1397716646, now seen corresponding path program 1 times [2022-11-16 11:12:33,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:33,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58918971] [2022-11-16 11:12:33,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:33,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:33,432 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 11:12:33,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:33,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58918971] [2022-11-16 11:12:33,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58918971] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:33,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259055510] [2022-11-16 11:12:33,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:33,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:33,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:33,434 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:33,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:12:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:33,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:12:33,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:33,571 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 11:12:33,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:12:33,613 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 11:12:33,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259055510] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:12:33,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:12:33,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:12:33,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255918675] [2022-11-16 11:12:33,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:12:33,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:12:33,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:33,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:12:33,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:12:33,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 109 [2022-11-16 11:12:33,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 106 transitions, 346 flow. Second operand has 10 states, 10 states have (on average 73.5) internal successors, (735), 10 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:33,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:33,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 109 [2022-11-16 11:12:33,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:37,674 INFO L130 PetriNetUnfolder]: 7887/31423 cut-off events. [2022-11-16 11:12:37,674 INFO L131 PetriNetUnfolder]: For 18614/19672 co-relation queries the response was YES. [2022-11-16 11:12:37,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54362 conditions, 31423 events. 7887/31423 cut-off events. For 18614/19672 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 384250 event pairs, 2142 based on Foata normal form. 6/28635 useless extension candidates. Maximal degree in co-relation 54350. Up to 8409 conditions per place. [2022-11-16 11:12:37,914 INFO L137 encePairwiseOnDemand]: 103/109 looper letters, 50 selfloop transitions, 9 changer transitions 0/131 dead transitions. [2022-11-16 11:12:37,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 131 transitions, 546 flow [2022-11-16 11:12:37,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:12:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:12:37,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 694 transitions. [2022-11-16 11:12:37,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7074413863404689 [2022-11-16 11:12:37,917 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 694 transitions. [2022-11-16 11:12:37,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 694 transitions. [2022-11-16 11:12:37,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:37,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 694 transitions. [2022-11-16 11:12:37,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.11111111111111) internal successors, (694), 9 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:37,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:37,922 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:37,922 INFO L175 Difference]: Start difference. First operand has 112 places, 106 transitions, 346 flow. Second operand 9 states and 694 transitions. [2022-11-16 11:12:37,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 131 transitions, 546 flow [2022-11-16 11:12:37,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 131 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:12:37,943 INFO L231 Difference]: Finished difference. Result has 121 places, 112 transitions, 380 flow [2022-11-16 11:12:37,943 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=380, PETRI_PLACES=121, PETRI_TRANSITIONS=112} [2022-11-16 11:12:37,943 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, 8 predicate places. [2022-11-16 11:12:37,944 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 112 transitions, 380 flow [2022-11-16 11:12:37,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.5) internal successors, (735), 10 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:37,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:37,945 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-16 11:12:37,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:38,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:38,150 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-16 11:12:38,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:38,151 INFO L85 PathProgramCache]: Analyzing trace with hash 163452763, now seen corresponding path program 1 times [2022-11-16 11:12:38,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:38,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106238655] [2022-11-16 11:12:38,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:38,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:38,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:38,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106238655] [2022-11-16 11:12:38,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106238655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:38,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947111929] [2022-11-16 11:12:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:38,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:38,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:38,465 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:38,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:12:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:38,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:12:38,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:38,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:12:38,795 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:38,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947111929] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:12:38,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:12:38,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:12:38,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489258243] [2022-11-16 11:12:38,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:12:38,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:12:38,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:38,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:12:38,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:12:38,800 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 109 [2022-11-16 11:12:38,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 112 transitions, 380 flow. Second operand has 18 states, 18 states have (on average 73.72222222222223) internal successors, (1327), 18 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:38,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:38,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 109 [2022-11-16 11:12:38,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:39,447 INFO L130 PetriNetUnfolder]: 1863/3337 cut-off events. [2022-11-16 11:12:39,447 INFO L131 PetriNetUnfolder]: For 4066/4066 co-relation queries the response was YES. [2022-11-16 11:12:39,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9547 conditions, 3337 events. 1863/3337 cut-off events. For 4066/4066 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19689 event pairs, 0 based on Foata normal form. 120/3457 useless extension candidates. Maximal degree in co-relation 9533. Up to 1927 conditions per place. [2022-11-16 11:12:39,470 INFO L137 encePairwiseOnDemand]: 104/109 looper letters, 91 selfloop transitions, 19 changer transitions 0/156 dead transitions. [2022-11-16 11:12:39,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 156 transitions, 816 flow [2022-11-16 11:12:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:12:39,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:12:39,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1605 transitions. [2022-11-16 11:12:39,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7011795543905636 [2022-11-16 11:12:39,478 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1605 transitions. [2022-11-16 11:12:39,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1605 transitions. [2022-11-16 11:12:39,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:39,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1605 transitions. [2022-11-16 11:12:39,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 76.42857142857143) internal successors, (1605), 21 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:39,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 109.0) internal successors, (2398), 22 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:39,488 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 109.0) internal successors, (2398), 22 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:39,488 INFO L175 Difference]: Start difference. First operand has 121 places, 112 transitions, 380 flow. Second operand 21 states and 1605 transitions. [2022-11-16 11:12:39,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 156 transitions, 816 flow [2022-11-16 11:12:39,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 156 transitions, 761 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-16 11:12:39,499 INFO L231 Difference]: Finished difference. Result has 110 places, 82 transitions, 292 flow [2022-11-16 11:12:39,499 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=292, PETRI_PLACES=110, PETRI_TRANSITIONS=82} [2022-11-16 11:12:39,499 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, -3 predicate places. [2022-11-16 11:12:39,499 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 82 transitions, 292 flow [2022-11-16 11:12:39,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 73.72222222222223) internal successors, (1327), 18 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:39,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:39,500 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:39,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:39,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:39,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-16 11:12:39,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:39,712 INFO L85 PathProgramCache]: Analyzing trace with hash -83408276, now seen corresponding path program 1 times [2022-11-16 11:12:39,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:39,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096286715] [2022-11-16 11:12:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:39,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:12:39,740 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:12:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:12:39,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:12:39,776 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:12:39,777 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 11:12:39,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-16 11:12:39,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-16 11:12:39,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-16 11:12:39,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-16 11:12:39,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-16 11:12:39,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-16 11:12:39,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-16 11:12:39,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-16 11:12:39,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-16 11:12:39,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-16 11:12:39,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 11:12:39,780 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-16 11:12:39,784 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:12:39,784 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-11-16 11:12:39,822 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2022-11-16 11:12:39,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 117 transitions, 332 flow [2022-11-16 11:12:40,195 INFO L130 PetriNetUnfolder]: 472/3222 cut-off events. [2022-11-16 11:12:40,195 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2022-11-16 11:12:40,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 3222 events. 472/3222 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 23708 event pairs, 201 based on Foata normal form. 0/2798 useless extension candidates. Maximal degree in co-relation 1878. Up to 448 conditions per place. [2022-11-16 11:12:40,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 117 transitions, 332 flow [2022-11-16 11:12:40,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 117 transitions, 332 flow [2022-11-16 11:12:40,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:12:40,214 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;@5bef23db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:12:40,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-16 11:12:40,215 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-16 11:12:40,216 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:12:40,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:40,216 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:40,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-16 11:12:40,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:40,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1720163034, now seen corresponding path program 1 times [2022-11-16 11:12:40,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:40,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714104211] [2022-11-16 11:12:40,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:40,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:40,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:40,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714104211] [2022-11-16 11:12:40,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714104211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:40,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:40,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:12:40,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574595126] [2022-11-16 11:12:40,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:40,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:12:40,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:40,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:12:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:12:40,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 117 [2022-11-16 11:12:40,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 332 flow. Second operand has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:40,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:40,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 117 [2022-11-16 11:12:40,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:44,683 INFO L130 PetriNetUnfolder]: 8348/34020 cut-off events. [2022-11-16 11:12:44,683 INFO L131 PetriNetUnfolder]: For 18390/37874 co-relation queries the response was YES. [2022-11-16 11:12:44,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50690 conditions, 34020 events. 8348/34020 cut-off events. For 18390/37874 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 437513 event pairs, 7375 based on Foata normal form. 1909/31368 useless extension candidates. Maximal degree in co-relation 31373. Up to 10656 conditions per place. [2022-11-16 11:12:45,198 INFO L137 encePairwiseOnDemand]: 106/117 looper letters, 22 selfloop transitions, 0 changer transitions 0/105 dead transitions. [2022-11-16 11:12:45,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 105 transitions, 352 flow [2022-11-16 11:12:45,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:12:45,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:12:45,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 199 transitions. [2022-11-16 11:12:45,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8504273504273504 [2022-11-16 11:12:45,200 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 199 transitions. [2022-11-16 11:12:45,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 199 transitions. [2022-11-16 11:12:45,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:45,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 199 transitions. [2022-11-16 11:12:45,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:45,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:45,201 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:45,201 INFO L175 Difference]: Start difference. First operand has 122 places, 117 transitions, 332 flow. Second operand 2 states and 199 transitions. [2022-11-16 11:12:45,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 105 transitions, 352 flow [2022-11-16 11:12:45,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 105 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:45,224 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 308 flow [2022-11-16 11:12:45,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=308, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2022-11-16 11:12:45,225 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, -8 predicate places. [2022-11-16 11:12:45,225 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 308 flow [2022-11-16 11:12:45,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:45,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:45,225 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] [2022-11-16 11:12:45,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 11:12:45,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-16 11:12:45,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:45,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1337588620, now seen corresponding path program 1 times [2022-11-16 11:12:45,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:45,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940905342] [2022-11-16 11:12:45,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:45,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:45,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:45,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940905342] [2022-11-16 11:12:45,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940905342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:45,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:45,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:45,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532423348] [2022-11-16 11:12:45,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:45,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:45,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:45,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:45,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:45,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 117 [2022-11-16 11:12:45,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:45,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:45,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 117 [2022-11-16 11:12:45,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:50,796 INFO L130 PetriNetUnfolder]: 12440/42897 cut-off events. [2022-11-16 11:12:50,797 INFO L131 PetriNetUnfolder]: For 20368/21457 co-relation queries the response was YES. [2022-11-16 11:12:50,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65504 conditions, 42897 events. 12440/42897 cut-off events. For 20368/21457 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 514722 event pairs, 9795 based on Foata normal form. 0/38063 useless extension candidates. Maximal degree in co-relation 65494. Up to 15955 conditions per place. [2022-11-16 11:12:51,105 INFO L137 encePairwiseOnDemand]: 114/117 looper letters, 32 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2022-11-16 11:12:51,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 110 transitions, 386 flow [2022-11-16 11:12:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:51,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:12:51,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2022-11-16 11:12:51,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7492877492877493 [2022-11-16 11:12:51,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2022-11-16 11:12:51,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2022-11-16 11:12:51,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:51,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2022-11-16 11:12:51,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:51,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:51,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:51,129 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 308 flow. Second operand 3 states and 263 transitions. [2022-11-16 11:12:51,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 110 transitions, 386 flow [2022-11-16 11:12:51,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 110 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:12:51,137 INFO L231 Difference]: Finished difference. Result has 117 places, 106 transitions, 320 flow [2022-11-16 11:12:51,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=117, PETRI_TRANSITIONS=106} [2022-11-16 11:12:51,141 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, -5 predicate places. [2022-11-16 11:12:51,147 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 106 transitions, 320 flow [2022-11-16 11:12:51,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:51,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:51,148 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] [2022-11-16 11:12:51,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 11:12:51,148 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-16 11:12:51,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:51,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1664542467, now seen corresponding path program 1 times [2022-11-16 11:12:51,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:51,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978411740] [2022-11-16 11:12:51,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:51,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:51,190 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 11:12:51,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:51,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978411740] [2022-11-16 11:12:51,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978411740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:51,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727342983] [2022-11-16 11:12:51,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:51,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:51,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:51,192 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:51,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:12:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:51,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:12:51,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:51,314 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 11:12:51,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:12:51,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727342983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:51,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:12:51,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-16 11:12:51,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199827025] [2022-11-16 11:12:51,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:51,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:51,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:51,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:51,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:51,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 117 [2022-11-16 11:12:51,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 106 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:51,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:51,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 117 [2022-11-16 11:12:51,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:03,226 INFO L130 PetriNetUnfolder]: 20001/91985 cut-off events. [2022-11-16 11:13:03,226 INFO L131 PetriNetUnfolder]: For 34625/43329 co-relation queries the response was YES. [2022-11-16 11:13:03,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128940 conditions, 91985 events. 20001/91985 cut-off events. For 34625/43329 co-relation queries the response was YES. Maximal size of possible extension queue 1829. Compared 1392799 event pairs, 9630 based on Foata normal form. 28/82820 useless extension candidates. Maximal degree in co-relation 128928. Up to 19640 conditions per place. [2022-11-16 11:13:03,881 INFO L137 encePairwiseOnDemand]: 107/117 looper letters, 31 selfloop transitions, 9 changer transitions 0/121 dead transitions. [2022-11-16 11:13:03,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 451 flow [2022-11-16 11:13:03,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:03,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:13:03,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2022-11-16 11:13:03,882 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8005698005698005 [2022-11-16 11:13:03,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2022-11-16 11:13:03,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2022-11-16 11:13:03,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:03,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2022-11-16 11:13:03,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:03,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:03,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:03,885 INFO L175 Difference]: Start difference. First operand has 117 places, 106 transitions, 320 flow. Second operand 3 states and 281 transitions. [2022-11-16 11:13:03,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 451 flow [2022-11-16 11:13:03,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:13:03,918 INFO L231 Difference]: Finished difference. Result has 120 places, 114 transitions, 388 flow [2022-11-16 11:13:03,918 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=120, PETRI_TRANSITIONS=114} [2022-11-16 11:13:03,919 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, -2 predicate places. [2022-11-16 11:13:03,919 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 114 transitions, 388 flow [2022-11-16 11:13:03,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:03,920 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:03,920 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] [2022-11-16 11:13:03,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:13:04,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-16 11:13:04,125 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-16 11:13:04,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:04,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1310076984, now seen corresponding path program 1 times [2022-11-16 11:13:04,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:04,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932801420] [2022-11-16 11:13:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:04,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:04,173 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 11:13:04,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:04,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932801420] [2022-11-16 11:13:04,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932801420] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:04,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815443322] [2022-11-16 11:13:04,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:04,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:04,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:04,176 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:04,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_737b0ab9-8fda-4318-a48e-bc90550fecfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 11:13:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:04,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:13:04,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:04,316 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 11:13:04,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:13:04,364 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 11:13:04,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815443322] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:13:04,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:13:04,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:13:04,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417030754] [2022-11-16 11:13:04,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:13:04,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:13:04,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:04,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:13:04,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:13:04,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 117 [2022-11-16 11:13:04,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 114 transitions, 388 flow. Second operand has 10 states, 10 states have (on average 77.5) internal successors, (775), 10 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:04,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:04,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 117 [2022-11-16 11:13:04,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand