./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a --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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- 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-b5237d8 [2022-11-21 16:10:13,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:10:13,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:10:13,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:10:13,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:10:13,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:10:13,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:10:13,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:10:13,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:10:13,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:10:13,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:10:13,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:10:13,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:10:13,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:10:13,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:10:13,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:10:13,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:10:13,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:10:13,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:10:13,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:10:13,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:10:13,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:10:13,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:10:13,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:10:13,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:10:13,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:10:13,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:10:13,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:10:13,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:10:13,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:10:13,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:10:13,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:10:13,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:10:13,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:10:13,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:10:13,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:10:13,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:10:13,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:10:13,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:10:13,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:10:13,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:10:13,226 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-21 16:10:13,272 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:10:13,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:10:13,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:10:13,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:10:13,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:10:13,278 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:10:13,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:10:13,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:10:13,279 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:10:13,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:10:13,281 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:10:13,281 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:10:13,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:10:13,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:10:13,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:10:13,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:10:13,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:10:13,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:10:13,283 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-21 16:10:13,283 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:10:13,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:10:13,284 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:10:13,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:10:13,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:10:13,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:10:13,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:10:13,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:10:13,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:10:13,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:10:13,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:10:13,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:10:13,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:10:13,287 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:10:13,288 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:10:13,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:10:13,288 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_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2022-11-21 16:10:13,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:10:13,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:10:13,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:10:13,640 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:10:13,641 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:10:13,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread/queue_longest.i [2022-11-21 16:10:17,286 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:10:17,692 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:10:17,698 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/sv-benchmarks/c/pthread/queue_longest.i [2022-11-21 16:10:17,722 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a/data/5afdc8cf2/4c8b3cfd166f45b3a3c52e174cbd7ed5/FLAGa3d1d435b [2022-11-21 16:10:17,746 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a/data/5afdc8cf2/4c8b3cfd166f45b3a3c52e174cbd7ed5 [2022-11-21 16:10:17,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:10:17,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:10:17,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:10:17,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:10:17,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:10:17,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:10:17" (1/1) ... [2022-11-21 16:10:17,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e9455c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:17, skipping insertion in model container [2022-11-21 16:10:17,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:10:17" (1/1) ... [2022-11-21 16:10:17,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:10:17,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:10:18,455 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-11-21 16:10:18,460 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-11-21 16:10:18,475 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-11-21 16:10:18,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:10:18,499 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:10:18,593 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-11-21 16:10:18,595 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-11-21 16:10:18,599 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-11-21 16:10:18,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:10:18,672 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:10:18,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:18 WrapperNode [2022-11-21 16:10:18,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:10:18,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:10:18,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:10:18,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:10:18,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:18" (1/1) ... [2022-11-21 16:10:18,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:18" (1/1) ... [2022-11-21 16:10:18,830 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 481 [2022-11-21 16:10:18,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:10:18,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:10:18,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:10:18,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:10:18,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:18" (1/1) ... [2022-11-21 16:10:18,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:18" (1/1) ... [2022-11-21 16:10:18,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:18" (1/1) ... [2022-11-21 16:10:18,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:18" (1/1) ... [2022-11-21 16:10:18,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:18" (1/1) ... [2022-11-21 16:10:18,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:18" (1/1) ... [2022-11-21 16:10:18,911 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:18" (1/1) ... [2022-11-21 16:10:18,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:18" (1/1) ... [2022-11-21 16:10:18,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:10:18,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:10:18,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:10:18,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:10:18,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:18" (1/1) ... [2022-11-21 16:10:18,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:10:18,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:10:18,965 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:10:19,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4b8da10-ab70-47a0-8097-d4d2eb537719/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:10:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-21 16:10:19,060 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-21 16:10:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-21 16:10:19,060 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-21 16:10:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:10:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:10:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:10:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:10:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 16:10:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:10:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:10:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:10:19,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:10:19,064 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:10:19,265 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:10:19,267 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:10:20,577 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:10:20,600 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:10:20,601 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 16:10:20,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:10:20 BoogieIcfgContainer [2022-11-21 16:10:20,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:10:20,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:10:20,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:10:20,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:10:20,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:10:17" (1/3) ... [2022-11-21 16:10:20,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5fac17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:10:20, skipping insertion in model container [2022-11-21 16:10:20,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:10:18" (2/3) ... [2022-11-21 16:10:20,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5fac17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:10:20, skipping insertion in model container [2022-11-21 16:10:20,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:10:20" (3/3) ... [2022-11-21 16:10:20,621 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2022-11-21 16:10:20,633 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:10:20,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:10:20,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2022-11-21 16:10:20,649 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:10:20,961 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:10:21,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 545 places, 553 transitions, 1122 flow [2022-11-21 16:10:21,407 INFO L130 PetriNetUnfolder]: 15/551 cut-off events. [2022-11-21 16:10:21,408 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:10:21,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 551 events. 15/551 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 791 event pairs, 0 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 421. Up to 2 conditions per place. [2022-11-21 16:10:21,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 545 places, 553 transitions, 1122 flow [2022-11-21 16:10:21,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 533 places, 541 transitions, 1091 flow [2022-11-21 16:10:21,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:10:21,482 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;@2efcafe1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:10:21,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2022-11-21 16:10:21,493 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-11-21 16:10:21,493 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:10:21,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:10:21,494 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] [2022-11-21 16:10:21,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-21 16:10:21,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:21,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1503232977, now seen corresponding path program 1 times [2022-11-21 16:10:21,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:21,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107297397] [2022-11-21 16:10:21,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:21,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:21,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:10:21,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:21,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107297397] [2022-11-21 16:10:21,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107297397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:10:21,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:10:21,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:10:21,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076183123] [2022-11-21 16:10:21,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:10:21,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:10:21,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:21,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:10:22,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:10:22,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 525 out of 553 [2022-11-21 16:10:22,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 541 transitions, 1091 flow. Second operand has 3 states, 3 states have (on average 526.3333333333334) internal successors, (1579), 3 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:22,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:10:22,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 525 of 553 [2022-11-21 16:10:22,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:10:22,666 INFO L130 PetriNetUnfolder]: 59/1325 cut-off events. [2022-11-21 16:10:22,666 INFO L131 PetriNetUnfolder]: For 32/33 co-relation queries the response was YES. [2022-11-21 16:10:22,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 1325 events. 59/1325 cut-off events. For 32/33 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 5630 event pairs, 27 based on Foata normal form. 23/1183 useless extension candidates. Maximal degree in co-relation 1149. Up to 79 conditions per place. [2022-11-21 16:10:22,688 INFO L137 encePairwiseOnDemand]: 545/553 looper letters, 15 selfloop transitions, 2 changer transitions 0/530 dead transitions. [2022-11-21 16:10:22,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 530 transitions, 1103 flow [2022-11-21 16:10:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:10:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:10:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1598 transitions. [2022-11-21 16:10:22,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9632308619650392 [2022-11-21 16:10:22,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1598 transitions. [2022-11-21 16:10:22,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1598 transitions. [2022-11-21 16:10:22,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:10:22,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1598 transitions. [2022-11-21 16:10:22,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 532.6666666666666) internal successors, (1598), 3 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:22,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:22,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:22,760 INFO L175 Difference]: Start difference. First operand has 533 places, 541 transitions, 1091 flow. Second operand 3 states and 1598 transitions. [2022-11-21 16:10:22,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 530 transitions, 1103 flow [2022-11-21 16:10:22,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 530 transitions, 1098 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:10:22,783 INFO L231 Difference]: Finished difference. Result has 526 places, 530 transitions, 1068 flow [2022-11-21 16:10:22,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1068, PETRI_PLACES=526, PETRI_TRANSITIONS=530} [2022-11-21 16:10:22,791 INFO L288 CegarLoopForPetriNet]: 533 programPoint places, -7 predicate places. [2022-11-21 16:10:22,791 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 530 transitions, 1068 flow [2022-11-21 16:10:22,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 526.3333333333334) internal successors, (1579), 3 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:22,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:10:22,793 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:22,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:10:22,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-21 16:10:22,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:22,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2137247129, now seen corresponding path program 1 times [2022-11-21 16:10:22,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:22,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897590653] [2022-11-21 16:10:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:22,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:10:22,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:22,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897590653] [2022-11-21 16:10:22,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897590653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:10:22,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:10:22,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:10:22,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232277657] [2022-11-21 16:10:22,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:10:22,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:10:22,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:22,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:10:22,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:10:22,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 525 out of 553 [2022-11-21 16:10:22,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 530 transitions, 1068 flow. Second operand has 3 states, 3 states have (on average 526.3333333333334) internal successors, (1579), 3 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:22,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:10:22,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 525 of 553 [2022-11-21 16:10:22,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:10:23,794 INFO L130 PetriNetUnfolder]: 71/1702 cut-off events. [2022-11-21 16:10:23,794 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-11-21 16:10:23,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1802 conditions, 1702 events. 71/1702 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6889 event pairs, 27 based on Foata normal form. 0/1489 useless extension candidates. Maximal degree in co-relation 1762. Up to 85 conditions per place. [2022-11-21 16:10:23,816 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 15 selfloop transitions, 2 changer transitions 0/529 dead transitions. [2022-11-21 16:10:23,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 529 transitions, 1100 flow [2022-11-21 16:10:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:10:23,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:10:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1593 transitions. [2022-11-21 16:10:23,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9602169981916817 [2022-11-21 16:10:23,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1593 transitions. [2022-11-21 16:10:23,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1593 transitions. [2022-11-21 16:10:23,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:10:23,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1593 transitions. [2022-11-21 16:10:23,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 531.0) internal successors, (1593), 3 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:23,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:23,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:23,833 INFO L175 Difference]: Start difference. First operand has 526 places, 530 transitions, 1068 flow. Second operand 3 states and 1593 transitions. [2022-11-21 16:10:23,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 529 transitions, 1100 flow [2022-11-21 16:10:23,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 529 transitions, 1096 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:10:23,844 INFO L231 Difference]: Finished difference. Result has 525 places, 529 transitions, 1066 flow [2022-11-21 16:10:23,846 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1066, PETRI_PLACES=525, PETRI_TRANSITIONS=529} [2022-11-21 16:10:23,847 INFO L288 CegarLoopForPetriNet]: 533 programPoint places, -8 predicate places. [2022-11-21 16:10:23,847 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 529 transitions, 1066 flow [2022-11-21 16:10:23,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 526.3333333333334) internal successors, (1579), 3 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:23,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:10:23,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:23,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:10:23,850 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-21 16:10:23,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:23,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1920164171, now seen corresponding path program 1 times [2022-11-21 16:10:23,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:23,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348205475] [2022-11-21 16:10:23,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:23,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:10:24,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:24,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348205475] [2022-11-21 16:10:24,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348205475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:10:24,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:10:24,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:10:24,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838336278] [2022-11-21 16:10:24,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:10:24,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:10:24,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:24,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:10:24,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:10:24,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 553 [2022-11-21 16:10:24,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 529 transitions, 1066 flow. Second operand has 6 states, 6 states have (on average 318.5) internal successors, (1911), 6 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:24,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:10:24,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 553 [2022-11-21 16:10:24,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand