./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 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_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8 --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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- 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-2329fc7 [2022-12-13 21:10:19,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:10:19,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:10:19,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:10:19,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:10:19,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:10:19,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:10:19,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:10:19,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:10:19,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:10:19,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:10:19,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:10:19,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:10:19,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:10:19,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:10:19,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:10:19,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:10:19,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:10:19,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:10:19,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:10:19,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:10:19,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:10:19,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:10:19,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:10:19,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:10:19,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:10:19,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:10:19,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:10:19,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:10:19,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:10:19,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:10:19,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:10:19,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:10:19,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:10:19,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:10:19,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:10:19,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:10:19,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:10:19,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:10:19,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:10:19,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:10:19,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 21:10:19,228 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:10:19,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:10:19,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:10:19,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:10:19,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:10:19,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:10:19,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:10:19,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:10:19,230 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:10:19,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:10:19,231 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:10:19,231 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:10:19,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:10:19,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:10:19,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:10:19,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:10:19,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:10:19,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:10:19,232 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 21:10:19,232 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:10:19,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:10:19,232 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:10:19,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:10:19,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:10:19,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:10:19,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:10:19,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:10:19,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:10:19,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:10:19,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:10:19,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:10:19,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:10:19,234 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:10:19,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:10:19,234 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:10:19,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:10:19,235 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:10:19,235 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2022-12-13 21:10:19,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:10:19,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:10:19,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:10:19,446 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:10:19,447 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:10:19,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-12-13 21:10:21,976 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:10:22,163 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:10:22,163 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-12-13 21:10:22,171 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/data/ed941d7fc/251db0ed4a2f4146880a8a4162739d72/FLAG2ada818d4 [2022-12-13 21:10:22,577 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/data/ed941d7fc/251db0ed4a2f4146880a8a4162739d72 [2022-12-13 21:10:22,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:10:22,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:10:22,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:10:22,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:10:22,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:10:22,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:10:22" (1/1) ... [2022-12-13 21:10:22,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2e3bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:22, skipping insertion in model container [2022-12-13 21:10:22,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:10:22" (1/1) ... [2022-12-13 21:10:22,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:10:22,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:10:22,805 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_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2022-12-13 21:10:22,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:10:22,832 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:10:22,856 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_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2022-12-13 21:10:22,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:10:22,885 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:10:22,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:22 WrapperNode [2022-12-13 21:10:22,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:10:22,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:10:22,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:10:22,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:10:22,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:22" (1/1) ... [2022-12-13 21:10:22,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:22" (1/1) ... [2022-12-13 21:10:22,915 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-12-13 21:10:22,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:10:22,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:10:22,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:10:22,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:10:22,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:22" (1/1) ... [2022-12-13 21:10:22,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:22" (1/1) ... [2022-12-13 21:10:22,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:22" (1/1) ... [2022-12-13 21:10:22,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:22" (1/1) ... [2022-12-13 21:10:22,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:22" (1/1) ... [2022-12-13 21:10:22,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:22" (1/1) ... [2022-12-13 21:10:22,939 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:22" (1/1) ... [2022-12-13 21:10:22,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:22" (1/1) ... [2022-12-13 21:10:22,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:10:22,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:10:22,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:10:22,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:10:22,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:22" (1/1) ... [2022-12-13 21:10:22,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:10:22,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:22,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:10:22,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:10:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:10:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:10:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 21:10:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:10:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:10:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 21:10:22,991 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 21:10:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:10:22,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:10:22,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:10:22,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:10:22,993 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 21:10:23,094 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:10:23,095 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:10:23,326 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:10:23,334 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:10:23,334 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-12-13 21:10:23,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:10:23 BoogieIcfgContainer [2022-12-13 21:10:23,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:10:23,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:10:23,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:10:23,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:10:23,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:10:22" (1/3) ... [2022-12-13 21:10:23,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599756d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:10:23, skipping insertion in model container [2022-12-13 21:10:23,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:22" (2/3) ... [2022-12-13 21:10:23,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599756d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:10:23, skipping insertion in model container [2022-12-13 21:10:23,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:10:23" (3/3) ... [2022-12-13 21:10:23,345 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2022-12-13 21:10:23,354 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:10:23,365 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:10:23,365 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 21:10:23,365 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:10:23,428 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:10:23,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 156 transitions, 317 flow [2022-12-13 21:10:23,540 INFO L130 PetriNetUnfolder]: 14/206 cut-off events. [2022-12-13 21:10:23,541 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:10:23,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 206 events. 14/206 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 576 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2022-12-13 21:10:23,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 156 transitions, 317 flow [2022-12-13 21:10:23,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 156 transitions, 317 flow [2022-12-13 21:10:23,567 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:10:23,579 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 156 transitions, 317 flow [2022-12-13 21:10:23,582 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 156 transitions, 317 flow [2022-12-13 21:10:23,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 156 transitions, 317 flow [2022-12-13 21:10:23,636 INFO L130 PetriNetUnfolder]: 14/206 cut-off events. [2022-12-13 21:10:23,637 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:10:23,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 206 events. 14/206 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 576 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2022-12-13 21:10:23,642 INFO L119 LiptonReduction]: Number of co-enabled transitions 7392 [2022-12-13 21:10:25,795 INFO L134 LiptonReduction]: Checked pairs total: 27559 [2022-12-13 21:10:25,795 INFO L136 LiptonReduction]: Total number of compositions: 106 [2022-12-13 21:10:25,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:10:25,810 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;@79333ca4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:10:25,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 21:10:25,812 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-13 21:10:25,812 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:10:25,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:10:25,813 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:10:25,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 21:10:25,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:25,817 INFO L85 PathProgramCache]: Analyzing trace with hash 17850, now seen corresponding path program 1 times [2022-12-13 21:10:25,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:25,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551890955] [2022-12-13 21:10:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:25,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:10:25,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:10:25,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551890955] [2022-12-13 21:10:25,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551890955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:10:25,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:10:25,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:10:25,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801056290] [2022-12-13 21:10:25,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:10:25,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:10:25,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:10:25,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:10:25,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:10:25,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 262 [2022-12-13 21:10:25,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 145 flow. Second operand has 2 states, 2 states have (on average 145.0) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:25,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:10:25,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 262 [2022-12-13 21:10:25,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:10:26,072 INFO L130 PetriNetUnfolder]: 120/516 cut-off events. [2022-12-13 21:10:26,072 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:10:26,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 516 events. 120/516 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2552 event pairs, 120 based on Foata normal form. 11/491 useless extension candidates. Maximal degree in co-relation 757. Up to 274 conditions per place. [2022-12-13 21:10:26,076 INFO L137 encePairwiseOnDemand]: 252/262 looper letters, 24 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2022-12-13 21:10:26,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 173 flow [2022-12-13 21:10:26,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:10:26,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:10:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 322 transitions. [2022-12-13 21:10:26,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6145038167938931 [2022-12-13 21:10:26,088 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 322 transitions. [2022-12-13 21:10:26,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 322 transitions. [2022-12-13 21:10:26,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:10:26,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 322 transitions. [2022-12-13 21:10:26,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 161.0) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:26,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:26,100 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:26,102 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 145 flow. Second operand 2 states and 322 transitions. [2022-12-13 21:10:26,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 173 flow [2022-12-13 21:10:26,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:10:26,106 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 125 flow [2022-12-13 21:10:26,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=125, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2022-12-13 21:10:26,110 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2022-12-13 21:10:26,111 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 125 flow [2022-12-13 21:10:26,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 145.0) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:26,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:10:26,111 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:10:26,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:10:26,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 21:10:26,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:26,112 INFO L85 PathProgramCache]: Analyzing trace with hash 552252, now seen corresponding path program 1 times [2022-12-13 21:10:26,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:26,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496114540] [2022-12-13 21:10:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:26,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:26,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:10:26,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:10:26,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496114540] [2022-12-13 21:10:26,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496114540] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:10:26,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:10:26,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:10:26,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134288668] [2022-12-13 21:10:26,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:10:26,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:10:26,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:10:26,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:10:26,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:10:26,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 262 [2022-12-13 21:10:26,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:26,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:10:26,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 262 [2022-12-13 21:10:26,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:10:26,286 INFO L130 PetriNetUnfolder]: 120/385 cut-off events. [2022-12-13 21:10:26,286 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:10:26,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 385 events. 120/385 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1784 event pairs, 0 based on Foata normal form. 0/350 useless extension candidates. Maximal degree in co-relation 665. Up to 251 conditions per place. [2022-12-13 21:10:26,288 INFO L137 encePairwiseOnDemand]: 259/262 looper letters, 35 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2022-12-13 21:10:26,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 225 flow [2022-12-13 21:10:26,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:10:26,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:10:26,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2022-12-13 21:10:26,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5826972010178118 [2022-12-13 21:10:26,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2022-12-13 21:10:26,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2022-12-13 21:10:26,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:10:26,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2022-12-13 21:10:26,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:26,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:26,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:26,297 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 125 flow. Second operand 3 states and 458 transitions. [2022-12-13 21:10:26,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 225 flow [2022-12-13 21:10:26,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 225 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:10:26,299 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 133 flow [2022-12-13 21:10:26,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2022-12-13 21:10:26,300 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2022-12-13 21:10:26,300 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 133 flow [2022-12-13 21:10:26,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:26,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:10:26,301 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 21:10:26,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:10:26,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 21:10:26,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:26,302 INFO L85 PathProgramCache]: Analyzing trace with hash -705955837, now seen corresponding path program 1 times [2022-12-13 21:10:26,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:26,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838576525] [2022-12-13 21:10:26,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:26,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:10:26,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:10:26,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838576525] [2022-12-13 21:10:26,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838576525] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:10:26,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804812638] [2022-12-13 21:10:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:26,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:10:26,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:26,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:10:26,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:10:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:26,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:10:26,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:10:26,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:10:26,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:10:26,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804812638] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:10:26,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:10:26,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 21:10:26,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758327380] [2022-12-13 21:10:26,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:10:26,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:10:26,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:10:26,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:10:26,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:10:26,434 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 262 [2022-12-13 21:10:26,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:26,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:10:26,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 262 [2022-12-13 21:10:26,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:10:26,537 INFO L130 PetriNetUnfolder]: 160/597 cut-off events. [2022-12-13 21:10:26,537 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-12-13 21:10:26,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 597 events. 160/597 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2875 event pairs, 102 based on Foata normal form. 0/587 useless extension candidates. Maximal degree in co-relation 1001. Up to 334 conditions per place. [2022-12-13 21:10:26,540 INFO L137 encePairwiseOnDemand]: 257/262 looper letters, 32 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2022-12-13 21:10:26,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 212 flow [2022-12-13 21:10:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:10:26,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:10:26,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-12-13 21:10:26,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5623409669211196 [2022-12-13 21:10:26,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-12-13 21:10:26,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-12-13 21:10:26,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:10:26,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-12-13 21:10:26,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:26,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:26,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:26,548 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 133 flow. Second operand 3 states and 442 transitions. [2022-12-13 21:10:26,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 212 flow [2022-12-13 21:10:26,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:10:26,550 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 139 flow [2022-12-13 21:10:26,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2022-12-13 21:10:26,550 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 0 predicate places. [2022-12-13 21:10:26,551 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 139 flow [2022-12-13 21:10:26,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:26,551 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:10:26,551 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 21:10:26,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:10:26,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:10:26,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 21:10:26,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:26,753 INFO L85 PathProgramCache]: Analyzing trace with hash -705955124, now seen corresponding path program 1 times [2022-12-13 21:10:26,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:26,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451527338] [2022-12-13 21:10:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:26,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:26,776 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:10:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:26,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:10:26,803 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:10:26,804 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 21:10:26,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-12-13 21:10:26,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-12-13 21:10:26,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-12-13 21:10:26,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-12-13 21:10:26,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-12-13 21:10:26,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-12-13 21:10:26,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-12-13 21:10:26,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-12-13 21:10:26,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-12-13 21:10:26,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-12-13 21:10:26,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-12-13 21:10:26,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-12-13 21:10:26,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-12-13 21:10:26,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-12-13 21:10:26,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-12-13 21:10:26,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-12-13 21:10:26,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:10:26,809 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 21:10:26,811 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:10:26,812 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 21:10:26,839 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:10:26,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 223 transitions, 458 flow [2022-12-13 21:10:26,887 INFO L130 PetriNetUnfolder]: 24/328 cut-off events. [2022-12-13 21:10:26,887 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 21:10:26,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 328 events. 24/328 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1243 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 207. Up to 6 conditions per place. [2022-12-13 21:10:26,889 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 223 transitions, 458 flow [2022-12-13 21:10:26,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 223 transitions, 458 flow [2022-12-13 21:10:26,892 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:10:26,892 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 223 transitions, 458 flow [2022-12-13 21:10:26,893 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 223 transitions, 458 flow [2022-12-13 21:10:26,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 223 transitions, 458 flow [2022-12-13 21:10:26,938 INFO L130 PetriNetUnfolder]: 24/328 cut-off events. [2022-12-13 21:10:26,938 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 21:10:26,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 328 events. 24/328 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1243 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 207. Up to 6 conditions per place. [2022-12-13 21:10:26,952 INFO L119 LiptonReduction]: Number of co-enabled transitions 23628 [2022-12-13 21:10:29,030 INFO L134 LiptonReduction]: Checked pairs total: 122642 [2022-12-13 21:10:29,030 INFO L136 LiptonReduction]: Total number of compositions: 130 [2022-12-13 21:10:29,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:10:29,032 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;@79333ca4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:10:29,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-13 21:10:29,033 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-13 21:10:29,033 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:10:29,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:10:29,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:10:29,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-12-13 21:10:29,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:29,034 INFO L85 PathProgramCache]: Analyzing trace with hash 31290, now seen corresponding path program 1 times [2022-12-13 21:10:29,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:29,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230655912] [2022-12-13 21:10:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:29,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:10:29,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:10:29,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230655912] [2022-12-13 21:10:29,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230655912] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:10:29,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:10:29,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:10:29,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904565044] [2022-12-13 21:10:29,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:10:29,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:10:29,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:10:29,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:10:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:10:29,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 353 [2022-12-13 21:10:29,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 119 transitions, 250 flow. Second operand has 2 states, 2 states have (on average 205.0) internal successors, (410), 2 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:29,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:10:29,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 353 [2022-12-13 21:10:29,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:10:29,831 INFO L130 PetriNetUnfolder]: 3396/9147 cut-off events. [2022-12-13 21:10:29,831 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-12-13 21:10:29,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14608 conditions, 9147 events. 3396/9147 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 83783 event pairs, 3396 based on Foata normal form. 747/9203 useless extension candidates. Maximal degree in co-relation 10340. Up to 5409 conditions per place. [2022-12-13 21:10:29,869 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 37 selfloop transitions, 0 changer transitions 0/103 dead transitions. [2022-12-13 21:10:29,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 292 flow [2022-12-13 21:10:29,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:10:29,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:10:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 461 transitions. [2022-12-13 21:10:29,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6529745042492918 [2022-12-13 21:10:29,871 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 461 transitions. [2022-12-13 21:10:29,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 461 transitions. [2022-12-13 21:10:29,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:10:29,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 461 transitions. [2022-12-13 21:10:29,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 230.5) internal successors, (461), 2 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:29,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:29,876 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:29,876 INFO L175 Difference]: Start difference. First operand has 110 places, 119 transitions, 250 flow. Second operand 2 states and 461 transitions. [2022-12-13 21:10:29,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 292 flow [2022-12-13 21:10:29,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 290 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 21:10:29,879 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 216 flow [2022-12-13 21:10:29,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=216, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2022-12-13 21:10:29,880 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, -1 predicate places. [2022-12-13 21:10:29,880 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 216 flow [2022-12-13 21:10:29,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 205.0) internal successors, (410), 2 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:29,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:10:29,880 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:10:29,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:10:29,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-12-13 21:10:29,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:29,881 INFO L85 PathProgramCache]: Analyzing trace with hash 968942, now seen corresponding path program 1 times [2022-12-13 21:10:29,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:29,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452956640] [2022-12-13 21:10:29,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:29,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:10:29,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:10:29,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452956640] [2022-12-13 21:10:29,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452956640] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:10:29,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:10:29,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:10:29,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408755433] [2022-12-13 21:10:29,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:10:29,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:10:29,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:10:29,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:10:29,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:10:29,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 353 [2022-12-13 21:10:29,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:29,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:10:29,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 353 [2022-12-13 21:10:29,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:10:30,672 INFO L130 PetriNetUnfolder]: 3396/9239 cut-off events. [2022-12-13 21:10:30,673 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-13 21:10:30,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14698 conditions, 9239 events. 3396/9239 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 85972 event pairs, 1560 based on Foata normal form. 0/8650 useless extension candidates. Maximal degree in co-relation 14693. Up to 5386 conditions per place. [2022-12-13 21:10:30,709 INFO L137 encePairwiseOnDemand]: 350/353 looper letters, 49 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2022-12-13 21:10:30,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 117 transitions, 346 flow [2022-12-13 21:10:30,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:10:30,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:10:30,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2022-12-13 21:10:30,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.615675165250236 [2022-12-13 21:10:30,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2022-12-13 21:10:30,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2022-12-13 21:10:30,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:10:30,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2022-12-13 21:10:30,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:30,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:30,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:30,714 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 216 flow. Second operand 3 states and 652 transitions. [2022-12-13 21:10:30,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 117 transitions, 346 flow [2022-12-13 21:10:30,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 117 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:10:30,716 INFO L231 Difference]: Finished difference. Result has 112 places, 104 transitions, 228 flow [2022-12-13 21:10:30,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=112, PETRI_TRANSITIONS=104} [2022-12-13 21:10:30,717 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 2 predicate places. [2022-12-13 21:10:30,717 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 104 transitions, 228 flow [2022-12-13 21:10:30,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:30,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:10:30,717 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:10:30,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:10:30,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-12-13 21:10:30,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:30,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1812444474, now seen corresponding path program 1 times [2022-12-13 21:10:30,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:30,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110046091] [2022-12-13 21:10:30,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:30,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:10:30,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:10:30,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110046091] [2022-12-13 21:10:30,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110046091] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:10:30,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38418782] [2022-12-13 21:10:30,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:30,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:10:30,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:30,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:10:30,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:10:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:30,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:10:30,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:10:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:10:30,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:10:30,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38418782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:10:30,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:10:30,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 21:10:30,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892957224] [2022-12-13 21:10:30,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:10:30,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:10:30,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:10:30,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:10:30,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:10:30,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 353 [2022-12-13 21:10:30,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 104 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:30,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:10:30,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 353 [2022-12-13 21:10:30,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:10:31,645 INFO L130 PetriNetUnfolder]: 4854/11764 cut-off events. [2022-12-13 21:10:31,645 INFO L131 PetriNetUnfolder]: For 550/550 co-relation queries the response was YES. [2022-12-13 21:10:31,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20007 conditions, 11764 events. 4854/11764 cut-off events. For 550/550 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 104130 event pairs, 3568 based on Foata normal form. 0/11434 useless extension candidates. Maximal degree in co-relation 20000. Up to 7616 conditions per place. [2022-12-13 21:10:31,692 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 50 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2022-12-13 21:10:31,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 109 transitions, 356 flow [2022-12-13 21:10:31,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:10:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:10:31,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2022-12-13 21:10:31,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5882908404154863 [2022-12-13 21:10:31,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2022-12-13 21:10:31,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2022-12-13 21:10:31,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:10:31,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2022-12-13 21:10:31,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:31,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:31,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:31,701 INFO L175 Difference]: Start difference. First operand has 112 places, 104 transitions, 228 flow. Second operand 3 states and 623 transitions. [2022-12-13 21:10:31,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 109 transitions, 356 flow [2022-12-13 21:10:31,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 109 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:10:31,704 INFO L231 Difference]: Finished difference. Result has 109 places, 102 transitions, 239 flow [2022-12-13 21:10:31,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=109, PETRI_TRANSITIONS=102} [2022-12-13 21:10:31,705 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, -1 predicate places. [2022-12-13 21:10:31,705 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 102 transitions, 239 flow [2022-12-13 21:10:31,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:31,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:10:31,706 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 21:10:31,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 21:10:31,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:10:31,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-12-13 21:10:31,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:31,907 INFO L85 PathProgramCache]: Analyzing trace with hash 824917057, now seen corresponding path program 1 times [2022-12-13 21:10:31,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:31,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444806667] [2022-12-13 21:10:31,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:31,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:31,922 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:10:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:31,938 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:10:31,938 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:10:31,939 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-12-13 21:10:31,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2022-12-13 21:10:31,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2022-12-13 21:10:31,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2022-12-13 21:10:31,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2022-12-13 21:10:31,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2022-12-13 21:10:31,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2022-12-13 21:10:31,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2022-12-13 21:10:31,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2022-12-13 21:10:31,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2022-12-13 21:10:31,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2022-12-13 21:10:31,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2022-12-13 21:10:31,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2022-12-13 21:10:31,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2022-12-13 21:10:31,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2022-12-13 21:10:31,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2022-12-13 21:10:31,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2022-12-13 21:10:31,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2022-12-13 21:10:31,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2022-12-13 21:10:31,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2022-12-13 21:10:31,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2022-12-13 21:10:31,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2022-12-13 21:10:31,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2022-12-13 21:10:31,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:10:31,943 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 21:10:31,944 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:10:31,944 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 21:10:31,978 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:10:31,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 290 transitions, 601 flow [2022-12-13 21:10:32,058 INFO L130 PetriNetUnfolder]: 34/450 cut-off events. [2022-12-13 21:10:32,058 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 21:10:32,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 450 events. 34/450 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1927 event pairs, 0 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 332. Up to 8 conditions per place. [2022-12-13 21:10:32,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 290 transitions, 601 flow [2022-12-13 21:10:32,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 290 transitions, 601 flow [2022-12-13 21:10:32,065 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:10:32,066 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 290 transitions, 601 flow [2022-12-13 21:10:32,066 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 290 transitions, 601 flow [2022-12-13 21:10:32,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 290 transitions, 601 flow [2022-12-13 21:10:32,129 INFO L130 PetriNetUnfolder]: 34/450 cut-off events. [2022-12-13 21:10:32,129 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 21:10:32,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 450 events. 34/450 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1927 event pairs, 0 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 332. Up to 8 conditions per place. [2022-12-13 21:10:32,149 INFO L119 LiptonReduction]: Number of co-enabled transitions 48708 [2022-12-13 21:10:34,483 INFO L134 LiptonReduction]: Checked pairs total: 248948 [2022-12-13 21:10:34,483 INFO L136 LiptonReduction]: Total number of compositions: 152 [2022-12-13 21:10:34,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:10:34,485 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;@79333ca4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:10:34,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-12-13 21:10:34,486 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-13 21:10:34,486 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:10:34,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:10:34,486 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:10:34,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-12-13 21:10:34,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash 47577, now seen corresponding path program 1 times [2022-12-13 21:10:34,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:34,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487293200] [2022-12-13 21:10:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:34,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:10:34,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:10:34,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487293200] [2022-12-13 21:10:34,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487293200] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:10:34,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:10:34,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:10:34,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154924431] [2022-12-13 21:10:34,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:10:34,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:10:34,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:10:34,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:10:34,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:10:34,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 442 [2022-12-13 21:10:34,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 167 transitions, 355 flow. Second operand has 2 states, 2 states have (on average 265.0) internal successors, (530), 2 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:34,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:10:34,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 442 [2022-12-13 21:10:34,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:10:46,136 INFO L130 PetriNetUnfolder]: 68292/139119 cut-off events. [2022-12-13 21:10:46,136 INFO L131 PetriNetUnfolder]: For 1087/1087 co-relation queries the response was YES. [2022-12-13 21:10:46,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234360 conditions, 139119 events. 68292/139119 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 2871. Compared 1602391 event pairs, 68292 based on Foata normal form. 9729/138782 useless extension candidates. Maximal degree in co-relation 125943. Up to 94472 conditions per place. [2022-12-13 21:10:46,761 INFO L137 encePairwiseOnDemand]: 420/442 looper letters, 50 selfloop transitions, 0 changer transitions 0/145 dead transitions. [2022-12-13 21:10:46,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 145 transitions, 411 flow [2022-12-13 21:10:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:10:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:10:46,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 600 transitions. [2022-12-13 21:10:46,762 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6787330316742082 [2022-12-13 21:10:46,763 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 600 transitions. [2022-12-13 21:10:46,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 600 transitions. [2022-12-13 21:10:46,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:10:46,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 600 transitions. [2022-12-13 21:10:46,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 300.0) internal successors, (600), 2 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:46,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 442.0) internal successors, (1326), 3 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:46,766 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 442.0) internal successors, (1326), 3 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:46,766 INFO L175 Difference]: Start difference. First operand has 154 places, 167 transitions, 355 flow. Second operand 2 states and 600 transitions. [2022-12-13 21:10:46,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 145 transitions, 411 flow [2022-12-13 21:10:46,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 145 transitions, 405 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 21:10:46,768 INFO L231 Difference]: Finished difference. Result has 153 places, 145 transitions, 305 flow [2022-12-13 21:10:46,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=305, PETRI_PLACES=153, PETRI_TRANSITIONS=145} [2022-12-13 21:10:46,769 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, -1 predicate places. [2022-12-13 21:10:46,769 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 145 transitions, 305 flow [2022-12-13 21:10:46,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 265.0) internal successors, (530), 2 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:46,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:10:46,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:10:46,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:10:46,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-12-13 21:10:46,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:46,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1474011, now seen corresponding path program 1 times [2022-12-13 21:10:46,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:46,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853083419] [2022-12-13 21:10:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:46,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:10:46,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:10:46,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853083419] [2022-12-13 21:10:46,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853083419] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:10:46,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:10:46,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:10:46,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957708819] [2022-12-13 21:10:46,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:10:46,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:10:46,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:10:46,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:10:46,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:10:46,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 442 [2022-12-13 21:10:46,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 145 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:46,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:10:46,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 442 [2022-12-13 21:10:46,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:10:57,882 INFO L130 PetriNetUnfolder]: 68292/138556 cut-off events. [2022-12-13 21:10:57,882 INFO L131 PetriNetUnfolder]: For 530/530 co-relation queries the response was YES. [2022-12-13 21:10:58,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233589 conditions, 138556 events. 68292/138556 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 2859. Compared 1593423 event pairs, 66269 based on Foata normal form. 0/128255 useless extension candidates. Maximal degree in co-relation 233583. Up to 94449 conditions per place. [2022-12-13 21:10:58,524 INFO L137 encePairwiseOnDemand]: 439/442 looper letters, 62 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2022-12-13 21:10:58,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 159 transitions, 461 flow [2022-12-13 21:10:58,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:10:58,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:10:58,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 845 transitions. [2022-12-13 21:10:58,527 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6372549019607843 [2022-12-13 21:10:58,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 845 transitions. [2022-12-13 21:10:58,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 845 transitions. [2022-12-13 21:10:58,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:10:58,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 845 transitions. [2022-12-13 21:10:58,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:58,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:58,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:58,531 INFO L175 Difference]: Start difference. First operand has 153 places, 145 transitions, 305 flow. Second operand 3 states and 845 transitions. [2022-12-13 21:10:58,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 159 transitions, 461 flow [2022-12-13 21:10:58,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 159 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:10:58,533 INFO L231 Difference]: Finished difference. Result has 156 places, 146 transitions, 317 flow [2022-12-13 21:10:58,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=156, PETRI_TRANSITIONS=146} [2022-12-13 21:10:58,534 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, 2 predicate places. [2022-12-13 21:10:58,534 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 146 transitions, 317 flow [2022-12-13 21:10:58,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:58,534 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:10:58,535 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:10:58,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:10:58,535 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-12-13 21:10:58,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:58,535 INFO L85 PathProgramCache]: Analyzing trace with hash 932773596, now seen corresponding path program 1 times [2022-12-13 21:10:58,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:58,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731514296] [2022-12-13 21:10:58,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:58,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:58,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:10:58,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:10:58,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731514296] [2022-12-13 21:10:58,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731514296] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:10:58,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616760406] [2022-12-13 21:10:58,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:58,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:10:58,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:58,566 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:10:58,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:10:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:58,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:10:58,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:10:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:10:58,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:10:58,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616760406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:10:58,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:10:58,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 21:10:58,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524535135] [2022-12-13 21:10:58,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:10:58,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:10:58,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:10:58,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:10:58,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:10:58,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 442 [2022-12-13 21:10:58,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 146 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 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) [2022-12-13 21:10:58,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:10:58,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 442 [2022-12-13 21:10:58,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:11:16,992 INFO L130 PetriNetUnfolder]: 136251/246824 cut-off events. [2022-12-13 21:11:16,992 INFO L131 PetriNetUnfolder]: For 10129/10129 co-relation queries the response was YES. [2022-12-13 21:11:17,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444294 conditions, 246824 events. 136251/246824 cut-off events. For 10129/10129 co-relation queries the response was YES. Maximal size of possible extension queue 4432. Compared 2663095 event pairs, 109105 based on Foata normal form. 0/238519 useless extension candidates. Maximal degree in co-relation 444286. Up to 187158 conditions per place. [2022-12-13 21:11:18,313 INFO L137 encePairwiseOnDemand]: 431/442 looper letters, 70 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2022-12-13 21:11:18,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 152 transitions, 494 flow [2022-12-13 21:11:18,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:11:18,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:11:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 808 transitions. [2022-12-13 21:11:18,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6093514328808446 [2022-12-13 21:11:18,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 808 transitions. [2022-12-13 21:11:18,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 808 transitions. [2022-12-13 21:11:18,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:11:18,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 808 transitions. [2022-12-13 21:11:18,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:11:18,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:11:18,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:11:18,319 INFO L175 Difference]: Start difference. First operand has 156 places, 146 transitions, 317 flow. Second operand 3 states and 808 transitions. [2022-12-13 21:11:18,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 152 transitions, 494 flow [2022-12-13 21:11:18,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 152 transitions, 491 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:11:18,322 INFO L231 Difference]: Finished difference. Result has 151 places, 143 transitions, 331 flow [2022-12-13 21:11:18,322 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=151, PETRI_TRANSITIONS=143} [2022-12-13 21:11:18,322 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, -3 predicate places. [2022-12-13 21:11:18,322 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 143 transitions, 331 flow [2022-12-13 21:11:18,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 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) [2022-12-13 21:11:18,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:11:18,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:11:18,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:11:18,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e5bbd3-fca7-4294-9df6-d627f0a7fd52/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:11:18,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-12-13 21:11:18,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:11:18,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1031854045, now seen corresponding path program 1 times [2022-12-13 21:11:18,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:11:18,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068400973] [2022-12-13 21:11:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:11:18,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:11:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:11:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:11:18,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:11:18,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068400973] [2022-12-13 21:11:18,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068400973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:11:18,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:11:18,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:11:18,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674761883] [2022-12-13 21:11:18,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:11:18,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:11:18,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:11:18,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:11:18,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:11:19,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 442 [2022-12-13 21:11:19,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 143 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 198.66666666666666) internal successors, (1192), 6 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:11:19,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:11:19,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 442 [2022-12-13 21:11:19,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand