./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/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_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/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_1d6322d3-af35-42ee-880d-734b63fe2671/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 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --- 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 15:52:35,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:52:35,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:52:35,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:52:35,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:52:35,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:52:35,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:52:35,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:52:35,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:52:35,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:52:35,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:52:35,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:52:35,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:52:35,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:52:35,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:52:35,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:52:35,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:52:35,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:52:35,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:52:35,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:52:35,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:52:35,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:52:35,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:52:35,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:52:35,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:52:35,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:52:35,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:52:35,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:52:35,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:52:35,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:52:35,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:52:35,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:52:35,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:52:35,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:52:35,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:52:35,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:52:35,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:52:35,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:52:35,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:52:35,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:52:35,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:52:35,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 15:52:35,851 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:52:35,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:52:35,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:52:35,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:52:35,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:52:35,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:52:35,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:52:35,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:52:35,854 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:52:35,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:52:35,854 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:52:35,854 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:52:35,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:52:35,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:52:35,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:52:35,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:52:35,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:52:35,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:52:35,856 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 15:52:35,856 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:52:35,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:52:35,856 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:52:35,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:52:35,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:52:35,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:52:35,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:52:35,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:52:35,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:52:35,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:52:35,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:52:35,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:52:35,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:52:35,858 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:52:35,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:52:35,858 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:52:35,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:52:35,859 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:52:35,859 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_1d6322d3-af35-42ee-880d-734b63fe2671/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 [2022-12-13 15:52:36,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:52:36,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:52:36,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:52:36,055 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:52:36,055 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:52:36,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2022-12-13 15:52:38,666 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:52:38,852 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:52:38,852 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2022-12-13 15:52:38,862 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/data/499c91efe/e5d5bbbe25de44fc96d5d85e3b36d3cf/FLAGadd25bc5d [2022-12-13 15:52:38,875 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/data/499c91efe/e5d5bbbe25de44fc96d5d85e3b36d3cf [2022-12-13 15:52:38,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:52:38,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:52:38,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:52:38,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:52:38,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:52:38,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:52:38" (1/1) ... [2022-12-13 15:52:38,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227f89cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:52:38, skipping insertion in model container [2022-12-13 15:52:38,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:52:38" (1/1) ... [2022-12-13 15:52:38,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:52:38,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:52:39,229 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_1d6322d3-af35-42ee-880d-734b63fe2671/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2022-12-13 15:52:39,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:52:39,263 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:52:39,286 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_1d6322d3-af35-42ee-880d-734b63fe2671/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2022-12-13 15:52:39,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:52:39,333 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:52:39,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:52:39 WrapperNode [2022-12-13 15:52:39,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:52:39,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:52:39,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:52:39,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:52:39,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:52:39" (1/1) ... [2022-12-13 15:52:39,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:52:39" (1/1) ... [2022-12-13 15:52:39,374 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 249 [2022-12-13 15:52:39,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:52:39,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:52:39,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:52:39,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:52:39,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:52:39" (1/1) ... [2022-12-13 15:52:39,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:52:39" (1/1) ... [2022-12-13 15:52:39,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:52:39" (1/1) ... [2022-12-13 15:52:39,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:52:39" (1/1) ... [2022-12-13 15:52:39,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:52:39" (1/1) ... [2022-12-13 15:52:39,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:52:39" (1/1) ... [2022-12-13 15:52:39,400 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:52:39" (1/1) ... [2022-12-13 15:52:39,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:52:39" (1/1) ... [2022-12-13 15:52:39,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:52:39,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:52:39,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:52:39,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:52:39,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:52:39" (1/1) ... [2022-12-13 15:52:39,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:52:39,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:52:39,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:52:39,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:52:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:52:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:52:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:52:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:52:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 15:52:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:52:39,466 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 15:52:39,466 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 15:52:39,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:52:39,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:52:39,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:52:39,468 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 15:52:39,567 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:52:39,569 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:52:39,911 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:52:39,919 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:52:39,919 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-12-13 15:52:39,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:52:39 BoogieIcfgContainer [2022-12-13 15:52:39,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:52:39,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:52:39,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:52:39,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:52:39,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:52:38" (1/3) ... [2022-12-13 15:52:39,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efb5b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:52:39, skipping insertion in model container [2022-12-13 15:52:39,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:52:39" (2/3) ... [2022-12-13 15:52:39,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efb5b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:52:39, skipping insertion in model container [2022-12-13 15:52:39,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:52:39" (3/3) ... [2022-12-13 15:52:39,928 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2022-12-13 15:52:39,935 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:52:39,941 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:52:39,942 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-13 15:52:39,942 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:52:40,013 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 15:52:40,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 269 transitions, 546 flow [2022-12-13 15:52:40,155 INFO L130 PetriNetUnfolder]: 45/380 cut-off events. [2022-12-13 15:52:40,156 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:52:40,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 380 events. 45/380 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1536 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2022-12-13 15:52:40,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 269 transitions, 546 flow [2022-12-13 15:52:40,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 269 transitions, 546 flow [2022-12-13 15:52:40,170 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:52:40,177 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 269 transitions, 546 flow [2022-12-13 15:52:40,179 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 269 transitions, 546 flow [2022-12-13 15:52:40,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 269 transitions, 546 flow [2022-12-13 15:52:40,223 INFO L130 PetriNetUnfolder]: 45/380 cut-off events. [2022-12-13 15:52:40,223 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:52:40,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 380 events. 45/380 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1536 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2022-12-13 15:52:40,232 INFO L119 LiptonReduction]: Number of co-enabled transitions 24102 [2022-12-13 15:52:42,680 INFO L134 LiptonReduction]: Checked pairs total: 97321 [2022-12-13 15:52:42,681 INFO L136 LiptonReduction]: Total number of compositions: 172 [2022-12-13 15:52:42,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:52:42,699 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;@332c2a05, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:52:42,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 15:52:42,705 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2022-12-13 15:52:42,705 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:52:42,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:52:42,706 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-13 15:52:42,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 15:52:42,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:52:42,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1956029229, now seen corresponding path program 1 times [2022-12-13 15:52:42,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:52:42,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866539987] [2022-12-13 15:52:42,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:42,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:52:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:52:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:52:42,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:52:42,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866539987] [2022-12-13 15:52:42,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866539987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:52:42,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:52:42,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:52:42,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977456464] [2022-12-13 15:52:42,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:52:42,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:52:42,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:52:42,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:52:42,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:52:42,918 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 441 [2022-12-13 15:52:42,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 131 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 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 15:52:42,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:52:42,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 441 [2022-12-13 15:52:42,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:52:43,149 INFO L130 PetriNetUnfolder]: 399/1544 cut-off events. [2022-12-13 15:52:43,149 INFO L131 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2022-12-13 15:52:43,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 1544 events. 399/1544 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10802 event pairs, 357 based on Foata normal form. 120/1516 useless extension candidates. Maximal degree in co-relation 2231. Up to 779 conditions per place. [2022-12-13 15:52:43,154 INFO L137 encePairwiseOnDemand]: 418/441 looper letters, 43 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-12-13 15:52:43,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 112 transitions, 322 flow [2022-12-13 15:52:43,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:52:43,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:52:43,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 768 transitions. [2022-12-13 15:52:43,170 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5804988662131519 [2022-12-13 15:52:43,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 768 transitions. [2022-12-13 15:52:43,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 768 transitions. [2022-12-13 15:52:43,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:52:43,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 768 transitions. [2022-12-13 15:52:43,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 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 15:52:43,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 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 15:52:43,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 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 15:52:43,190 INFO L175 Difference]: Start difference. First operand has 110 places, 131 transitions, 270 flow. Second operand 3 states and 768 transitions. [2022-12-13 15:52:43,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 112 transitions, 322 flow [2022-12-13 15:52:43,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:52:43,196 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 242 flow [2022-12-13 15:52:43,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=113, PETRI_TRANSITIONS=112} [2022-12-13 15:52:43,200 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 3 predicate places. [2022-12-13 15:52:43,201 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 242 flow [2022-12-13 15:52:43,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 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 15:52:43,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:52:43,202 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 15:52:43,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:52:43,202 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 15:52:43,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:52:43,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1138680235, now seen corresponding path program 1 times [2022-12-13 15:52:43,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:52:43,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194327111] [2022-12-13 15:52:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:43,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:52:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:52:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:52:43,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:52:43,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194327111] [2022-12-13 15:52:43,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194327111] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:52:43,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110776349] [2022-12-13 15:52:43,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:43,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:52:43,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:52:43,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:52:43,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:52:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:52:43,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:52:43,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:52:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:52:43,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:52:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:52:43,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110776349] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:52:43,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:52:43,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 15:52:43,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145581660] [2022-12-13 15:52:43,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:52:43,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:52:43,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:52:43,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:52:43,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:52:43,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 441 [2022-12-13 15:52:43,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 234.57142857142858) internal successors, (1642), 7 states have internal predecessors, (1642), 0 states have call successors, (0), 0 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 15:52:43,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:52:43,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 441 [2022-12-13 15:52:43,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:52:43,629 INFO L130 PetriNetUnfolder]: 399/1547 cut-off events. [2022-12-13 15:52:43,629 INFO L131 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2022-12-13 15:52:43,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 1547 events. 399/1547 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10839 event pairs, 357 based on Foata normal form. 0/1399 useless extension candidates. Maximal degree in co-relation 2335. Up to 779 conditions per place. [2022-12-13 15:52:43,640 INFO L137 encePairwiseOnDemand]: 438/441 looper letters, 43 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2022-12-13 15:52:43,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 350 flow [2022-12-13 15:52:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:52:43,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:52:43,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1449 transitions. [2022-12-13 15:52:43,646 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2022-12-13 15:52:43,646 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1449 transitions. [2022-12-13 15:52:43,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1449 transitions. [2022-12-13 15:52:43,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:52:43,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1449 transitions. [2022-12-13 15:52:43,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 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 15:52:43,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 441.0) internal successors, (3087), 7 states have internal predecessors, (3087), 0 states have call successors, (0), 0 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 15:52:43,653 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 441.0) internal successors, (3087), 7 states have internal predecessors, (3087), 0 states have call successors, (0), 0 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 15:52:43,653 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 242 flow. Second operand 6 states and 1449 transitions. [2022-12-13 15:52:43,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 350 flow [2022-12-13 15:52:43,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 115 transitions, 346 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 15:52:43,655 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 274 flow [2022-12-13 15:52:43,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2022-12-13 15:52:43,656 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 10 predicate places. [2022-12-13 15:52:43,656 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 274 flow [2022-12-13 15:52:43,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 234.57142857142858) internal successors, (1642), 7 states have internal predecessors, (1642), 0 states have call successors, (0), 0 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 15:52:43,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:52:43,657 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-12-13 15:52:43,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:52:43,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:52:43,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 15:52:43,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:52:43,859 INFO L85 PathProgramCache]: Analyzing trace with hash 603017901, now seen corresponding path program 2 times [2022-12-13 15:52:43,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:52:43,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147394929] [2022-12-13 15:52:43,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:43,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:52:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:52:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:52:44,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:52:44,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147394929] [2022-12-13 15:52:44,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147394929] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:52:44,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85943798] [2022-12-13 15:52:44,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:52:44,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:52:44,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:52:44,054 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:52:44,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:52:44,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:52:44,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:52:44,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:52:44,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:52:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:52:44,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:52:44,172 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:52:44,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85943798] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:52:44,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:52:44,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 15:52:44,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82459485] [2022-12-13 15:52:44,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:52:44,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:52:44,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:52:44,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:52:44,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:52:44,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 441 [2022-12-13 15:52:44,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 274 flow. Second operand has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 0 states have call successors, (0), 0 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 15:52:44,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:52:44,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 441 [2022-12-13 15:52:44,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:52:44,478 INFO L130 PetriNetUnfolder]: 399/1553 cut-off events. [2022-12-13 15:52:44,478 INFO L131 PetriNetUnfolder]: For 23/24 co-relation queries the response was YES. [2022-12-13 15:52:44,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 1553 events. 399/1553 cut-off events. For 23/24 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10872 event pairs, 357 based on Foata normal form. 6/1412 useless extension candidates. Maximal degree in co-relation 2326. Up to 779 conditions per place. [2022-12-13 15:52:44,485 INFO L137 encePairwiseOnDemand]: 438/441 looper letters, 43 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2022-12-13 15:52:44,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 121 transitions, 418 flow [2022-12-13 15:52:44,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:52:44,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:52:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2856 transitions. [2022-12-13 15:52:44,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2022-12-13 15:52:44,494 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2856 transitions. [2022-12-13 15:52:44,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2856 transitions. [2022-12-13 15:52:44,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:52:44,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2856 transitions. [2022-12-13 15:52:44,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 238.0) internal successors, (2856), 12 states have internal predecessors, (2856), 0 states have call successors, (0), 0 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 15:52:44,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 441.0) internal successors, (5733), 13 states have internal predecessors, (5733), 0 states have call successors, (0), 0 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 15:52:44,515 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 441.0) internal successors, (5733), 13 states have internal predecessors, (5733), 0 states have call successors, (0), 0 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 15:52:44,515 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 274 flow. Second operand 12 states and 2856 transitions. [2022-12-13 15:52:44,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 121 transitions, 418 flow [2022-12-13 15:52:44,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 404 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 15:52:44,518 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 344 flow [2022-12-13 15:52:44,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=344, PETRI_PLACES=136, PETRI_TRANSITIONS=121} [2022-12-13 15:52:44,519 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 26 predicate places. [2022-12-13 15:52:44,520 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 344 flow [2022-12-13 15:52:44,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 0 states have call successors, (0), 0 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 15:52:44,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:52:44,521 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-12-13 15:52:44,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:52:44,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:52:44,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-12-13 15:52:44,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:52:44,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1165733395, now seen corresponding path program 3 times [2022-12-13 15:52:44,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:52:44,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350490546] [2022-12-13 15:52:44,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:44,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:52:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:52:44,750 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:52:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:52:44,786 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:52:44,786 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:52:44,787 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 15:52:44,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-12-13 15:52:44,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-12-13 15:52:44,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-12-13 15:52:44,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-12-13 15:52:44,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-12-13 15:52:44,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-12-13 15:52:44,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-12-13 15:52:44,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-12-13 15:52:44,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-12-13 15:52:44,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-12-13 15:52:44,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-12-13 15:52:44,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-12-13 15:52:44,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-12-13 15:52:44,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-12-13 15:52:44,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-12-13 15:52:44,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-12-13 15:52:44,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:52:44,791 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2022-12-13 15:52:44,793 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:52:44,793 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 15:52:44,835 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 15:52:44,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 374 transitions, 766 flow [2022-12-13 15:52:44,906 INFO L130 PetriNetUnfolder]: 75/627 cut-off events. [2022-12-13 15:52:44,906 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 15:52:44,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 627 events. 75/627 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3124 event pairs, 0 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 382. Up to 12 conditions per place. [2022-12-13 15:52:44,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 374 transitions, 766 flow [2022-12-13 15:52:44,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 374 transitions, 766 flow [2022-12-13 15:52:44,914 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:52:44,914 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 374 transitions, 766 flow [2022-12-13 15:52:44,914 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 374 transitions, 766 flow [2022-12-13 15:52:44,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 374 transitions, 766 flow [2022-12-13 15:52:44,987 INFO L130 PetriNetUnfolder]: 75/627 cut-off events. [2022-12-13 15:52:44,987 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 15:52:44,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 627 events. 75/627 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3124 event pairs, 0 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 382. Up to 12 conditions per place. [2022-12-13 15:52:45,012 INFO L119 LiptonReduction]: Number of co-enabled transitions 71688 [2022-12-13 15:52:47,908 INFO L134 LiptonReduction]: Checked pairs total: 288294 [2022-12-13 15:52:47,908 INFO L136 LiptonReduction]: Total number of compositions: 230 [2022-12-13 15:52:47,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:52:47,910 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;@332c2a05, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:52:47,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 15:52:47,914 INFO L130 PetriNetUnfolder]: 15/87 cut-off events. [2022-12-13 15:52:47,914 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:52:47,914 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:52:47,914 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:52:47,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-13 15:52:47,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:52:47,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1932363157, now seen corresponding path program 1 times [2022-12-13 15:52:47,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:52:47,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587936485] [2022-12-13 15:52:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:47,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:52:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:52:47,937 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 15:52:47,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:52:47,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587936485] [2022-12-13 15:52:47,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587936485] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:52:47,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:52:47,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:52:47,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442889272] [2022-12-13 15:52:47,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:52:47,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:52:47,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:52:47,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:52:47,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:52:47,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 604 [2022-12-13 15:52:47,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 193 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 0 states have call successors, (0), 0 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 15:52:47,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:52:47,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 604 [2022-12-13 15:52:47,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:52:50,646 INFO L130 PetriNetUnfolder]: 14690/34746 cut-off events. [2022-12-13 15:52:50,646 INFO L131 PetriNetUnfolder]: For 196/274 co-relation queries the response was YES. [2022-12-13 15:52:50,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56119 conditions, 34746 events. 14690/34746 cut-off events. For 196/274 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 374056 event pairs, 13600 based on Foata normal form. 4146/35683 useless extension candidates. Maximal degree in co-relation 26812. Up to 21259 conditions per place. [2022-12-13 15:52:50,773 INFO L137 encePairwiseOnDemand]: 570/604 looper letters, 62 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2022-12-13 15:52:50,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 472 flow [2022-12-13 15:52:50,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:52:50,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:52:50,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1068 transitions. [2022-12-13 15:52:50,775 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5894039735099338 [2022-12-13 15:52:50,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1068 transitions. [2022-12-13 15:52:50,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1068 transitions. [2022-12-13 15:52:50,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:52:50,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1068 transitions. [2022-12-13 15:52:50,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 15:52:50,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 604.0) internal successors, (2416), 4 states have internal predecessors, (2416), 0 states have call successors, (0), 0 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 15:52:50,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 604.0) internal successors, (2416), 4 states have internal predecessors, (2416), 0 states have call successors, (0), 0 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 15:52:50,779 INFO L175 Difference]: Start difference. First operand has 161 places, 193 transitions, 404 flow. Second operand 3 states and 1068 transitions. [2022-12-13 15:52:50,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 472 flow [2022-12-13 15:52:50,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 163 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:52:50,781 INFO L231 Difference]: Finished difference. Result has 164 places, 163 transitions, 354 flow [2022-12-13 15:52:50,781 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=604, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=164, PETRI_TRANSITIONS=163} [2022-12-13 15:52:50,782 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 3 predicate places. [2022-12-13 15:52:50,782 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 163 transitions, 354 flow [2022-12-13 15:52:50,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 0 states have call successors, (0), 0 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 15:52:50,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:52:50,782 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:52:50,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:52:50,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-13 15:52:50,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:52:50,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1750236463, now seen corresponding path program 1 times [2022-12-13 15:52:50,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:52:50,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198330641] [2022-12-13 15:52:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:50,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:52:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:52:50,815 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 15:52:50,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:52:50,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198330641] [2022-12-13 15:52:50,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198330641] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:52:50,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174971836] [2022-12-13 15:52:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:50,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:52:50,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:52:50,817 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:52:50,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:52:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:52:50,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:52:50,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:52:50,878 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 15:52:50,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:52:50,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174971836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:52:50,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:52:50,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 15:52:50,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045433785] [2022-12-13 15:52:50,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:52:50,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:52:50,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:52:50,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:52:50,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:52:50,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 604 [2022-12-13 15:52:50,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 163 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 15:52:50,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:52:50,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 604 [2022-12-13 15:52:50,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:52:53,556 INFO L130 PetriNetUnfolder]: 14723/35009 cut-off events. [2022-12-13 15:52:53,556 INFO L131 PetriNetUnfolder]: For 190/220 co-relation queries the response was YES. [2022-12-13 15:52:53,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56372 conditions, 35009 events. 14723/35009 cut-off events. For 190/220 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 379243 event pairs, 11915 based on Foata normal form. 0/31778 useless extension candidates. Maximal degree in co-relation 56359. Up to 21223 conditions per place. [2022-12-13 15:52:53,700 INFO L137 encePairwiseOnDemand]: 601/604 looper letters, 81 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2022-12-13 15:52:53,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 182 transitions, 558 flow [2022-12-13 15:52:53,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:52:53,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:52:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1055 transitions. [2022-12-13 15:52:53,703 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5822295805739515 [2022-12-13 15:52:53,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1055 transitions. [2022-12-13 15:52:53,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1055 transitions. [2022-12-13 15:52:53,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:52:53,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1055 transitions. [2022-12-13 15:52:53,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 351.6666666666667) internal successors, (1055), 3 states have internal predecessors, (1055), 0 states have call successors, (0), 0 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 15:52:53,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 604.0) internal successors, (2416), 4 states have internal predecessors, (2416), 0 states have call successors, (0), 0 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 15:52:53,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 604.0) internal successors, (2416), 4 states have internal predecessors, (2416), 0 states have call successors, (0), 0 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 15:52:53,707 INFO L175 Difference]: Start difference. First operand has 164 places, 163 transitions, 354 flow. Second operand 3 states and 1055 transitions. [2022-12-13 15:52:53,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 182 transitions, 558 flow [2022-12-13 15:52:53,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 182 transitions, 554 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 15:52:53,711 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 362 flow [2022-12-13 15:52:53,711 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=604, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2022-12-13 15:52:53,711 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 5 predicate places. [2022-12-13 15:52:53,711 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 362 flow [2022-12-13 15:52:53,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 15:52:53,712 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:52:53,712 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 15:52:53,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:52:53,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 15:52:53,914 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-13 15:52:53,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:52:53,915 INFO L85 PathProgramCache]: Analyzing trace with hash 909322289, now seen corresponding path program 1 times [2022-12-13 15:52:53,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:52:53,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259387511] [2022-12-13 15:52:53,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:53,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:52:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:52:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 15:52:53,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:52:53,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259387511] [2022-12-13 15:52:53,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259387511] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:52:53,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95730883] [2022-12-13 15:52:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:53,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:52:53,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:52:53,978 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:52:53,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:52:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:52:54,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:52:54,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:52:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 15:52:54,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:52:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 15:52:54,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95730883] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:52:54,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:52:54,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 15:52:54,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294129284] [2022-12-13 15:52:54,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:52:54,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:52:54,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:52:54,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:52:54,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:52:54,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 604 [2022-12-13 15:52:54,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 324.7142857142857) internal successors, (2273), 7 states have internal predecessors, (2273), 0 states have call successors, (0), 0 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 15:52:54,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:52:54,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 604 [2022-12-13 15:52:54,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:52:56,956 INFO L130 PetriNetUnfolder]: 14723/34994 cut-off events. [2022-12-13 15:52:56,956 INFO L131 PetriNetUnfolder]: For 870/885 co-relation queries the response was YES. [2022-12-13 15:52:57,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57065 conditions, 34994 events. 14723/34994 cut-off events. For 870/885 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 378357 event pairs, 13600 based on Foata normal form. 3/32034 useless extension candidates. Maximal degree in co-relation 57037. Up to 21242 conditions per place. [2022-12-13 15:52:57,084 INFO L137 encePairwiseOnDemand]: 601/604 looper letters, 63 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2022-12-13 15:52:57,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 167 transitions, 510 flow [2022-12-13 15:52:57,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:52:57,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:52:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2008 transitions. [2022-12-13 15:52:57,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5540838852097131 [2022-12-13 15:52:57,087 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2008 transitions. [2022-12-13 15:52:57,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2008 transitions. [2022-12-13 15:52:57,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:52:57,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2008 transitions. [2022-12-13 15:52:57,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 334.6666666666667) internal successors, (2008), 6 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 15:52:57,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 604.0) internal successors, (4228), 7 states have internal predecessors, (4228), 0 states have call successors, (0), 0 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 15:52:57,094 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 604.0) internal successors, (4228), 7 states have internal predecessors, (4228), 0 states have call successors, (0), 0 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 15:52:57,094 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 362 flow. Second operand 6 states and 2008 transitions. [2022-12-13 15:52:57,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 167 transitions, 510 flow [2022-12-13 15:52:57,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 167 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:52:57,097 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 396 flow [2022-12-13 15:52:57,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=604, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2022-12-13 15:52:57,097 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 12 predicate places. [2022-12-13 15:52:57,097 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 396 flow [2022-12-13 15:52:57,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 324.7142857142857) internal successors, (2273), 7 states have internal predecessors, (2273), 0 states have call successors, (0), 0 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 15:52:57,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:52:57,098 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 15:52:57,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:52:57,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:52:57,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-13 15:52:57,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:52:57,301 INFO L85 PathProgramCache]: Analyzing trace with hash 626061132, now seen corresponding path program 2 times [2022-12-13 15:52:57,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:52:57,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507935216] [2022-12-13 15:52:57,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:52:57,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:52:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:52:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 15:52:57,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:52:57,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507935216] [2022-12-13 15:52:57,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507935216] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:52:57,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507613291] [2022-12-13 15:52:57,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:52:57,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:52:57,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:52:57,393 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:52:57,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:52:57,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:52:57,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:52:57,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:52:57,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:52:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 15:52:57,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:52:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 15:52:57,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507613291] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:52:57,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:52:57,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 15:52:57,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939783376] [2022-12-13 15:52:57,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:52:57,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:52:57,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:52:57,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:52:57,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:52:57,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 604 [2022-12-13 15:52:57,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 396 flow. Second operand has 13 states, 13 states have (on average 324.38461538461536) internal successors, (4217), 13 states have internal predecessors, (4217), 0 states have call successors, (0), 0 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 15:52:57,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:52:57,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 604 [2022-12-13 15:52:57,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:53:00,442 INFO L130 PetriNetUnfolder]: 14723/35000 cut-off events. [2022-12-13 15:53:00,443 INFO L131 PetriNetUnfolder]: For 904/919 co-relation queries the response was YES. [2022-12-13 15:53:00,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57086 conditions, 35000 events. 14723/35000 cut-off events. For 904/919 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 378570 event pairs, 13600 based on Foata normal form. 6/32043 useless extension candidates. Maximal degree in co-relation 57026. Up to 21242 conditions per place. [2022-12-13 15:53:00,614 INFO L137 encePairwiseOnDemand]: 601/604 looper letters, 63 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2022-12-13 15:53:00,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 173 transitions, 580 flow [2022-12-13 15:53:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:53:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:53:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3955 transitions. [2022-12-13 15:53:00,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.545667770419426 [2022-12-13 15:53:00,620 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3955 transitions. [2022-12-13 15:53:00,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3955 transitions. [2022-12-13 15:53:00,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:53:00,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3955 transitions. [2022-12-13 15:53:00,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 329.5833333333333) internal successors, (3955), 12 states have internal predecessors, (3955), 0 states have call successors, (0), 0 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 15:53:00,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 604.0) internal successors, (7852), 13 states have internal predecessors, (7852), 0 states have call successors, (0), 0 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 15:53:00,637 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 604.0) internal successors, (7852), 13 states have internal predecessors, (7852), 0 states have call successors, (0), 0 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 15:53:00,637 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 396 flow. Second operand 12 states and 3955 transitions. [2022-12-13 15:53:00,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 173 transitions, 580 flow [2022-12-13 15:53:00,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 173 transitions, 566 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 15:53:00,641 INFO L231 Difference]: Finished difference. Result has 189 places, 173 transitions, 466 flow [2022-12-13 15:53:00,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=604, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=466, PETRI_PLACES=189, PETRI_TRANSITIONS=173} [2022-12-13 15:53:00,641 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 28 predicate places. [2022-12-13 15:53:00,642 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 173 transitions, 466 flow [2022-12-13 15:53:00,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 324.38461538461536) internal successors, (4217), 13 states have internal predecessors, (4217), 0 states have call successors, (0), 0 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 15:53:00,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:53:00,643 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 15:53:00,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:53:00,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:53:00,844 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-13 15:53:00,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:53:00,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1363858732, now seen corresponding path program 3 times [2022-12-13 15:53:00,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:53:00,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520805699] [2022-12-13 15:53:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:53:00,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:53:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:53:00,883 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:53:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:53:00,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:53:00,907 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:53:00,907 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-12-13 15:53:00,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-12-13 15:53:00,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-12-13 15:53:00,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-12-13 15:53:00,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-12-13 15:53:00,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-12-13 15:53:00,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-12-13 15:53:00,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-12-13 15:53:00,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-12-13 15:53:00,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-12-13 15:53:00,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-12-13 15:53:00,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-12-13 15:53:00,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-12-13 15:53:00,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-12-13 15:53:00,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-12-13 15:53:00,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-12-13 15:53:00,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-12-13 15:53:00,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-12-13 15:53:00,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-12-13 15:53:00,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-12-13 15:53:00,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-12-13 15:53:00,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-12-13 15:53:00,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:53:00,910 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-12-13 15:53:00,910 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:53:00,910 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 15:53:00,959 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 15:53:00,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 479 transitions, 988 flow [2022-12-13 15:53:01,134 INFO L130 PetriNetUnfolder]: 110/919 cut-off events. [2022-12-13 15:53:01,134 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 15:53:01,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 919 events. 110/919 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5108 event pairs, 1 based on Foata normal form. 0/762 useless extension candidates. Maximal degree in co-relation 635. Up to 16 conditions per place. [2022-12-13 15:53:01,143 INFO L82 GeneralOperation]: Start removeDead. Operand has 427 places, 479 transitions, 988 flow [2022-12-13 15:53:01,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 427 places, 479 transitions, 988 flow [2022-12-13 15:53:01,153 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:53:01,153 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 427 places, 479 transitions, 988 flow [2022-12-13 15:53:01,153 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 427 places, 479 transitions, 988 flow [2022-12-13 15:53:01,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 479 transitions, 988 flow [2022-12-13 15:53:01,338 INFO L130 PetriNetUnfolder]: 110/919 cut-off events. [2022-12-13 15:53:01,338 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 15:53:01,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 919 events. 110/919 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5108 event pairs, 1 based on Foata normal form. 0/762 useless extension candidates. Maximal degree in co-relation 635. Up to 16 conditions per place. [2022-12-13 15:53:01,400 INFO L119 LiptonReduction]: Number of co-enabled transitions 140286 [2022-12-13 15:53:05,224 INFO L134 LiptonReduction]: Checked pairs total: 580846 [2022-12-13 15:53:05,224 INFO L136 LiptonReduction]: Total number of compositions: 294 [2022-12-13 15:53:05,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:53:05,226 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;@332c2a05, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:53:05,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-12-13 15:53:05,231 INFO L130 PetriNetUnfolder]: 14/75 cut-off events. [2022-12-13 15:53:05,231 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:53:05,231 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:53:05,231 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:53:05,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 15:53:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:53:05,232 INFO L85 PathProgramCache]: Analyzing trace with hash 588647634, now seen corresponding path program 1 times [2022-12-13 15:53:05,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:53:05,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810677329] [2022-12-13 15:53:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:53:05,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:53:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:53:05,255 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 15:53:05,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:53:05,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810677329] [2022-12-13 15:53:05,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810677329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:53:05,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:53:05,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:53:05,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504982712] [2022-12-13 15:53:05,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:53:05,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:53:05,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:53:05,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:53:05,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:53:05,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 773 [2022-12-13 15:53:05,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 255 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 415.6666666666667) internal successors, (1247), 3 states have internal predecessors, (1247), 0 states have call successors, (0), 0 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 15:53:05,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:53:05,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 773 [2022-12-13 15:53:05,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:54:05,767 INFO L130 PetriNetUnfolder]: 404947/771610 cut-off events. [2022-12-13 15:54:05,767 INFO L131 PetriNetUnfolder]: For 5239/6832 co-relation queries the response was YES. [2022-12-13 15:54:07,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297493 conditions, 771610 events. 404947/771610 cut-off events. For 5239/6832 co-relation queries the response was YES. Maximal size of possible extension queue 15897. Compared 10137983 event pairs, 377214 based on Foata normal form. 92864/801181 useless extension candidates. Maximal degree in co-relation 301872. Up to 523251 conditions per place. [2022-12-13 15:54:10,342 INFO L137 encePairwiseOnDemand]: 728/773 looper letters, 81 selfloop transitions, 2 changer transitions 0/213 dead transitions. [2022-12-13 15:54:10,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 213 transitions, 622 flow [2022-12-13 15:54:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:54:10,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:54:10,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1368 transitions. [2022-12-13 15:54:10,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5899094437257438 [2022-12-13 15:54:10,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1368 transitions. [2022-12-13 15:54:10,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1368 transitions. [2022-12-13 15:54:10,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:54:10,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1368 transitions. [2022-12-13 15:54:10,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 456.0) internal successors, (1368), 3 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 15:54:10,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 773.0) internal successors, (3092), 4 states have internal predecessors, (3092), 0 states have call successors, (0), 0 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 15:54:10,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 773.0) internal successors, (3092), 4 states have internal predecessors, (3092), 0 states have call successors, (0), 0 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 15:54:10,354 INFO L175 Difference]: Start difference. First operand has 212 places, 255 transitions, 540 flow. Second operand 3 states and 1368 transitions. [2022-12-13 15:54:10,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 213 transitions, 622 flow [2022-12-13 15:54:10,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 213 transitions, 622 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:54:10,368 INFO L231 Difference]: Finished difference. Result has 214 places, 213 transitions, 466 flow [2022-12-13 15:54:10,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=773, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=214, PETRI_TRANSITIONS=213} [2022-12-13 15:54:10,369 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 2 predicate places. [2022-12-13 15:54:10,369 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 213 transitions, 466 flow [2022-12-13 15:54:10,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 415.6666666666667) internal successors, (1247), 3 states have internal predecessors, (1247), 0 states have call successors, (0), 0 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 15:54:10,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:54:10,370 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:54:10,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:54:10,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 15:54:10,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:54:10,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1505475776, now seen corresponding path program 1 times [2022-12-13 15:54:10,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:54:10,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818425132] [2022-12-13 15:54:10,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:10,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:54:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:54:10,406 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 15:54:10,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:54:10,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818425132] [2022-12-13 15:54:10,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818425132] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:54:10,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229977216] [2022-12-13 15:54:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:10,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:10,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:54:10,408 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:54:10,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:54:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:54:10,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:54:10,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:54:10,471 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 15:54:10,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:54:10,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229977216] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:54:10,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:54:10,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 15:54:10,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771722212] [2022-12-13 15:54:10,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:54:10,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:54:10,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:54:10,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:54:10,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:54:10,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 773 [2022-12-13 15:54:10,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 213 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 0 states have call successors, (0), 0 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 15:54:10,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:54:10,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 773 [2022-12-13 15:54:10,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:55:10,438 INFO L130 PetriNetUnfolder]: 405234/776963 cut-off events. [2022-12-13 15:55:10,438 INFO L131 PetriNetUnfolder]: For 6091/7343 co-relation queries the response was YES. [2022-12-13 15:55:12,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1303018 conditions, 776963 events. 405234/776963 cut-off events. For 6091/7343 co-relation queries the response was YES. Maximal size of possible extension queue 16034. Compared 10275247 event pairs, 339022 based on Foata normal form. 0/712624 useless extension candidates. Maximal degree in co-relation 1303004. Up to 523397 conditions per place. [2022-12-13 15:55:15,239 INFO L137 encePairwiseOnDemand]: 770/773 looper letters, 100 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2022-12-13 15:55:15,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 232 transitions, 708 flow [2022-12-13 15:55:15,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:55:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:55:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1344 transitions. [2022-12-13 15:55:15,243 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5795601552393272 [2022-12-13 15:55:15,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1344 transitions. [2022-12-13 15:55:15,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1344 transitions. [2022-12-13 15:55:15,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:55:15,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1344 transitions. [2022-12-13 15:55:15,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 448.0) internal successors, (1344), 3 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 15:55:15,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 773.0) internal successors, (3092), 4 states have internal predecessors, (3092), 0 states have call successors, (0), 0 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 15:55:15,248 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 773.0) internal successors, (3092), 4 states have internal predecessors, (3092), 0 states have call successors, (0), 0 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 15:55:15,248 INFO L175 Difference]: Start difference. First operand has 214 places, 213 transitions, 466 flow. Second operand 3 states and 1344 transitions. [2022-12-13 15:55:15,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 232 transitions, 708 flow [2022-12-13 15:55:15,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 232 transitions, 704 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 15:55:15,253 INFO L231 Difference]: Finished difference. Result has 216 places, 214 transitions, 474 flow [2022-12-13 15:55:15,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=773, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=474, PETRI_PLACES=216, PETRI_TRANSITIONS=214} [2022-12-13 15:55:15,254 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 4 predicate places. [2022-12-13 15:55:15,254 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 214 transitions, 474 flow [2022-12-13 15:55:15,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 0 states have call successors, (0), 0 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 15:55:15,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:55:15,255 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:55:15,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 15:55:15,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 15:55:15,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 15:55:15,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:55:15,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1611882830, now seen corresponding path program 1 times [2022-12-13 15:55:15,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:55:15,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844846877] [2022-12-13 15:55:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:55:15,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:55:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:15,501 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 15:55:15,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:55:15,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844846877] [2022-12-13 15:55:15,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844846877] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:55:15,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645039107] [2022-12-13 15:55:15,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:55:15,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:55:15,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:55:15,503 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:55:15,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:55:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:15,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:55:15,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:55:15,578 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 15:55:15,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:55:15,588 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 15:55:15,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645039107] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:55:15,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:55:15,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 15:55:15,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305710024] [2022-12-13 15:55:15,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:55:15,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:55:15,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:55:15,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:55:15,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:55:15,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 773 [2022-12-13 15:55:15,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 214 transitions, 474 flow. Second operand has 7 states, 7 states have (on average 414.85714285714283) internal successors, (2904), 7 states have internal predecessors, (2904), 0 states have call successors, (0), 0 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 15:55:15,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:55:15,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 773 [2022-12-13 15:55:15,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:56:20,174 INFO L130 PetriNetUnfolder]: 405234/775321 cut-off events. [2022-12-13 15:56:20,175 INFO L131 PetriNetUnfolder]: For 18178/19186 co-relation queries the response was YES. [2022-12-13 15:56:22,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313908 conditions, 775321 events. 405234/775321 cut-off events. For 18178/19186 co-relation queries the response was YES. Maximal size of possible extension queue 15960. Compared 10227381 event pairs, 377214 based on Foata normal form. 3/717940 useless extension candidates. Maximal degree in co-relation 1313879. Up to 523576 conditions per place. [2022-12-13 15:56:25,292 INFO L137 encePairwiseOnDemand]: 770/773 looper letters, 82 selfloop transitions, 5 changer transitions 0/217 dead transitions. [2022-12-13 15:56:25,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 217 transitions, 660 flow [2022-12-13 15:56:25,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:56:25,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:56:25,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2567 transitions. [2022-12-13 15:56:25,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5534713238464856 [2022-12-13 15:56:25,297 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2567 transitions. [2022-12-13 15:56:25,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2567 transitions. [2022-12-13 15:56:25,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:56:25,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2567 transitions. [2022-12-13 15:56:25,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 427.8333333333333) internal successors, (2567), 6 states have internal predecessors, (2567), 0 states have call successors, (0), 0 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 15:56:25,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 773.0) internal successors, (5411), 7 states have internal predecessors, (5411), 0 states have call successors, (0), 0 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 15:56:25,306 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 773.0) internal successors, (5411), 7 states have internal predecessors, (5411), 0 states have call successors, (0), 0 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 15:56:25,306 INFO L175 Difference]: Start difference. First operand has 216 places, 214 transitions, 474 flow. Second operand 6 states and 2567 transitions. [2022-12-13 15:56:25,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 217 transitions, 660 flow [2022-12-13 15:56:25,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 217 transitions, 658 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:56:25,321 INFO L231 Difference]: Finished difference. Result has 223 places, 217 transitions, 508 flow [2022-12-13 15:56:25,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=773, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=508, PETRI_PLACES=223, PETRI_TRANSITIONS=217} [2022-12-13 15:56:25,322 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 11 predicate places. [2022-12-13 15:56:25,322 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 217 transitions, 508 flow [2022-12-13 15:56:25,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 414.85714285714283) internal successors, (2904), 7 states have internal predecessors, (2904), 0 states have call successors, (0), 0 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 15:56:25,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:56:25,323 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:56:25,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 15:56:25,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 15:56:25,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 15:56:25,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:56:25,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1119378508, now seen corresponding path program 2 times [2022-12-13 15:56:25,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:56:25,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108469891] [2022-12-13 15:56:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:56:25,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:56:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:56:25,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:56:25,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108469891] [2022-12-13 15:56:25,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108469891] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:56:25,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525776859] [2022-12-13 15:56:25,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:56:25,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:56:25,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:56:25,586 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:56:25,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6322d3-af35-42ee-880d-734b63fe2671/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 15:56:25,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 15:56:25,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:56:25,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 15:56:25,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:56:25,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 15:56:25,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 15:56:25,702 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:56:25,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 15:56:25,728 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:56:25,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-12-13 15:56:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 15:56:25,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:56:25,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525776859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:56:25,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:56:25,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2022-12-13 15:56:25,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386174376] [2022-12-13 15:56:25,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:56:25,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:56:25,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:56:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:56:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:56:26,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 773 [2022-12-13 15:56:26,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 217 transitions, 508 flow. Second operand has 6 states, 6 states have (on average 367.1666666666667) internal successors, (2203), 6 states have internal predecessors, (2203), 0 states have call successors, (0), 0 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 15:56:26,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:56:26,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 773 [2022-12-13 15:56:26,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand