./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/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_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/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_a378ac3b-4c24-458b-8f40-6153f0a088b2/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 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- 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 17:34:16,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:34:16,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:34:16,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:34:16,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:34:16,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:34:16,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:34:16,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:34:16,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:34:16,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:34:16,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:34:16,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:34:16,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:34:16,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:34:16,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:34:16,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:34:16,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:34:16,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:34:16,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:34:16,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:34:16,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:34:16,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:34:16,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:34:16,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:34:16,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:34:16,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:34:16,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:34:16,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:34:16,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:34:16,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:34:16,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:34:16,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:34:16,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:34:16,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:34:16,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:34:16,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:34:16,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:34:16,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:34:16,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:34:16,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:34:16,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:34:16,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 17:34:16,090 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:34:16,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:34:16,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:34:16,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:34:16,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:34:16,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:34:16,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:34:16,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:34:16,091 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:34:16,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:34:16,091 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:34:16,092 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:34:16,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:34:16,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:34:16,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:34:16,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:34:16,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:34:16,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:34:16,092 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 17:34:16,092 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:34:16,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:34:16,092 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:34:16,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:34:16,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:34:16,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:34:16,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:34:16,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:34:16,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:34:16,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:34:16,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:34:16,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:34:16,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:34:16,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:34:16,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:34:16,094 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:34:16,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:34:16,094 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:34:16,094 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_a378ac3b-4c24-458b-8f40-6153f0a088b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2022-12-13 17:34:16,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:34:16,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:34:16,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:34:16,277 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:34:16,278 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:34:16,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2022-12-13 17:34:18,903 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:34:19,106 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:34:19,107 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2022-12-13 17:34:19,119 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/data/a7e97f4f5/c8ef1c2861d94ec98b59ce4127639295/FLAGb87b1ebf8 [2022-12-13 17:34:19,131 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/data/a7e97f4f5/c8ef1c2861d94ec98b59ce4127639295 [2022-12-13 17:34:19,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:34:19,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:34:19,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:34:19,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:34:19,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:34:19,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:34:19" (1/1) ... [2022-12-13 17:34:19,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66990b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:34:19, skipping insertion in model container [2022-12-13 17:34:19,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:34:19" (1/1) ... [2022-12-13 17:34:19,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:34:19,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:34:19,448 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_a378ac3b-4c24-458b-8f40-6153f0a088b2/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2022-12-13 17:34:19,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:34:19,480 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:34:19,505 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_a378ac3b-4c24-458b-8f40-6153f0a088b2/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2022-12-13 17:34:19,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:34:19,570 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:34:19,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:34:19 WrapperNode [2022-12-13 17:34:19,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:34:19,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:34:19,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:34:19,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:34:19,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:34:19" (1/1) ... [2022-12-13 17:34:19,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:34:19" (1/1) ... [2022-12-13 17:34:19,613 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 249 [2022-12-13 17:34:19,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:34:19,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:34:19,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:34:19,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:34:19,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:34:19" (1/1) ... [2022-12-13 17:34:19,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:34:19" (1/1) ... [2022-12-13 17:34:19,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:34:19" (1/1) ... [2022-12-13 17:34:19,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:34:19" (1/1) ... [2022-12-13 17:34:19,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:34:19" (1/1) ... [2022-12-13 17:34:19,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:34:19" (1/1) ... [2022-12-13 17:34:19,641 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:34:19" (1/1) ... [2022-12-13 17:34:19,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:34:19" (1/1) ... [2022-12-13 17:34:19,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:34:19,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:34:19,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:34:19,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:34:19,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:34:19" (1/1) ... [2022-12-13 17:34:19,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:34:19,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:34:19,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:34:19,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:34:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:34:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:34:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:34:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:34:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 17:34:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:34:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 17:34:19,702 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 17:34:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:34:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:34:19,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:34:19,703 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 17:34:19,818 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:34:19,820 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:34:20,157 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:34:20,163 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:34:20,163 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-12-13 17:34:20,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:34:20 BoogieIcfgContainer [2022-12-13 17:34:20,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:34:20,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:34:20,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:34:20,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:34:20,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:34:19" (1/3) ... [2022-12-13 17:34:20,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5e2be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:34:20, skipping insertion in model container [2022-12-13 17:34:20,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:34:19" (2/3) ... [2022-12-13 17:34:20,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5e2be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:34:20, skipping insertion in model container [2022-12-13 17:34:20,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:34:20" (3/3) ... [2022-12-13 17:34:20,171 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2022-12-13 17:34:20,178 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 17:34:20,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:34:20,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-13 17:34:20,185 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:34:20,262 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 17:34:20,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 269 transitions, 546 flow [2022-12-13 17:34:20,378 INFO L130 PetriNetUnfolder]: 45/380 cut-off events. [2022-12-13 17:34:20,378 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:34:20,385 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 17:34:20,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 269 transitions, 546 flow [2022-12-13 17:34:20,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 269 transitions, 546 flow [2022-12-13 17:34:20,393 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:34:20,401 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 269 transitions, 546 flow [2022-12-13 17:34:20,403 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 269 transitions, 546 flow [2022-12-13 17:34:20,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 269 transitions, 546 flow [2022-12-13 17:34:20,443 INFO L130 PetriNetUnfolder]: 45/380 cut-off events. [2022-12-13 17:34:20,443 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:34:20,445 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 17:34:20,452 INFO L119 LiptonReduction]: Number of co-enabled transitions 24102 [2022-12-13 17:34:22,798 INFO L134 LiptonReduction]: Checked pairs total: 97321 [2022-12-13 17:34:22,799 INFO L136 LiptonReduction]: Total number of compositions: 172 [2022-12-13 17:34:22,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:34:22,813 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;@84741c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:34:22,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 17:34:22,817 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2022-12-13 17:34:22,817 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:34:22,817 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:34:22,818 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-13 17:34:22,818 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 17:34:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:34:22,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1956029229, now seen corresponding path program 1 times [2022-12-13 17:34:22,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:34:22,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108767620] [2022-12-13 17:34:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:34:22,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:34:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:34:22,990 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 17:34:22,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:34:22,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108767620] [2022-12-13 17:34:22,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108767620] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:34:22,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:34:22,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:34:22,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047015113] [2022-12-13 17:34:22,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:34:22,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:34:22,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:34:23,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:34:23,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:34:23,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 441 [2022-12-13 17:34:23,035 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 17:34:23,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:34:23,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 441 [2022-12-13 17:34:23,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:34:23,270 INFO L130 PetriNetUnfolder]: 399/1544 cut-off events. [2022-12-13 17:34:23,270 INFO L131 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2022-12-13 17:34:23,272 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 17:34:23,277 INFO L137 encePairwiseOnDemand]: 418/441 looper letters, 43 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-12-13 17:34:23,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 112 transitions, 322 flow [2022-12-13 17:34:23,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:34:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:34:23,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 768 transitions. [2022-12-13 17:34:23,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5804988662131519 [2022-12-13 17:34:23,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 768 transitions. [2022-12-13 17:34:23,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 768 transitions. [2022-12-13 17:34:23,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:34:23,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 768 transitions. [2022-12-13 17:34:23,296 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 17:34:23,302 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 17:34:23,302 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 17:34:23,304 INFO L175 Difference]: Start difference. First operand has 110 places, 131 transitions, 270 flow. Second operand 3 states and 768 transitions. [2022-12-13 17:34:23,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 112 transitions, 322 flow [2022-12-13 17:34:23,307 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 17:34:23,309 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 242 flow [2022-12-13 17:34:23,310 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 17:34:23,313 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 3 predicate places. [2022-12-13 17:34:23,313 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 242 flow [2022-12-13 17:34:23,313 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 17:34:23,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:34:23,314 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 17:34:23,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:34:23,314 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 17:34:23,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:34:23,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1138680235, now seen corresponding path program 1 times [2022-12-13 17:34:23,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:34:23,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181778262] [2022-12-13 17:34:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:34:23,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:34:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:34:23,376 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 17:34:23,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:34:23,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181778262] [2022-12-13 17:34:23,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181778262] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:34:23,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863749272] [2022-12-13 17:34:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:34:23,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:34:23,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:34:23,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:34:23,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:34:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:34:23,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:34:23,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:34:23,469 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 17:34:23,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:34:23,480 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 17:34:23,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863749272] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:34:23,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:34:23,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 17:34:23,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151263010] [2022-12-13 17:34:23,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:34:23,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:34:23,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:34:23,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:34:23,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:34:23,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 441 [2022-12-13 17:34:23,504 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 17:34:23,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:34:23,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 441 [2022-12-13 17:34:23,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:34:23,718 INFO L130 PetriNetUnfolder]: 399/1547 cut-off events. [2022-12-13 17:34:23,718 INFO L131 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2022-12-13 17:34:23,720 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 17:34:23,723 INFO L137 encePairwiseOnDemand]: 438/441 looper letters, 43 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2022-12-13 17:34:23,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 350 flow [2022-12-13 17:34:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:34:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:34:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1449 transitions. [2022-12-13 17:34:23,726 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2022-12-13 17:34:23,726 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1449 transitions. [2022-12-13 17:34:23,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1449 transitions. [2022-12-13 17:34:23,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:34:23,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1449 transitions. [2022-12-13 17:34:23,729 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 17:34:23,732 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 17:34:23,733 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 17:34:23,733 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 242 flow. Second operand 6 states and 1449 transitions. [2022-12-13 17:34:23,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 350 flow [2022-12-13 17:34:23,735 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 17:34:23,736 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 274 flow [2022-12-13 17:34:23,736 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 17:34:23,736 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 10 predicate places. [2022-12-13 17:34:23,737 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 274 flow [2022-12-13 17:34:23,737 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 17:34:23,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:34:23,737 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-12-13 17:34:23,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:34:23,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:34:23,938 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 17:34:23,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:34:23,939 INFO L85 PathProgramCache]: Analyzing trace with hash 603017901, now seen corresponding path program 2 times [2022-12-13 17:34:23,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:34:23,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615738530] [2022-12-13 17:34:23,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:34:23,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:34:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:34:24,038 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 17:34:24,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:34:24,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615738530] [2022-12-13 17:34:24,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615738530] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:34:24,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522458374] [2022-12-13 17:34:24,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:34:24,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:34:24,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:34:24,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:34:24,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:34:24,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:34:24,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:34:24,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:34:24,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:34:24,126 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 17:34:24,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:34:24,167 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 17:34:24,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522458374] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:34:24,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:34:24,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 17:34:24,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870113993] [2022-12-13 17:34:24,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:34:24,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 17:34:24,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:34:24,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 17:34:24,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:34:24,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 441 [2022-12-13 17:34:24,199 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 17:34:24,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:34:24,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 441 [2022-12-13 17:34:24,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:34:24,436 INFO L130 PetriNetUnfolder]: 399/1553 cut-off events. [2022-12-13 17:34:24,436 INFO L131 PetriNetUnfolder]: For 23/24 co-relation queries the response was YES. [2022-12-13 17:34:24,438 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 17:34:24,441 INFO L137 encePairwiseOnDemand]: 438/441 looper letters, 43 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2022-12-13 17:34:24,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 121 transitions, 418 flow [2022-12-13 17:34:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:34:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:34:24,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2856 transitions. [2022-12-13 17:34:24,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2022-12-13 17:34:24,445 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2856 transitions. [2022-12-13 17:34:24,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2856 transitions. [2022-12-13 17:34:24,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:34:24,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2856 transitions. [2022-12-13 17:34:24,450 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 17:34:24,455 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 17:34:24,457 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 17:34:24,457 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 274 flow. Second operand 12 states and 2856 transitions. [2022-12-13 17:34:24,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 121 transitions, 418 flow [2022-12-13 17:34:24,459 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 17:34:24,460 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 344 flow [2022-12-13 17:34:24,460 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 17:34:24,460 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 26 predicate places. [2022-12-13 17:34:24,460 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 344 flow [2022-12-13 17:34:24,461 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 17:34:24,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:34:24,462 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-12-13 17:34:24,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:34:24,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:34:24,663 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 17:34:24,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:34:24,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1165733395, now seen corresponding path program 3 times [2022-12-13 17:34:24,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:34:24,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426539829] [2022-12-13 17:34:24,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:34:24,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:34:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:34:24,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:34:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:34:24,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:34:24,718 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:34:24,719 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 17:34:24,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-12-13 17:34:24,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-12-13 17:34:24,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-12-13 17:34:24,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-12-13 17:34:24,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-12-13 17:34:24,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-12-13 17:34:24,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-12-13 17:34:24,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-12-13 17:34:24,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-12-13 17:34:24,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-12-13 17:34:24,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-12-13 17:34:24,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-12-13 17:34:24,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-12-13 17:34:24,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-12-13 17:34:24,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-12-13 17:34:24,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-12-13 17:34:24,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:34:24,723 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2022-12-13 17:34:24,724 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 17:34:24,725 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 17:34:24,760 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 17:34:24,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 374 transitions, 766 flow [2022-12-13 17:34:24,832 INFO L130 PetriNetUnfolder]: 75/627 cut-off events. [2022-12-13 17:34:24,832 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 17:34:24,835 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 17:34:24,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 374 transitions, 766 flow [2022-12-13 17:34:24,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 374 transitions, 766 flow [2022-12-13 17:34:24,840 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:34:24,840 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 374 transitions, 766 flow [2022-12-13 17:34:24,840 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 374 transitions, 766 flow [2022-12-13 17:34:24,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 374 transitions, 766 flow [2022-12-13 17:34:24,905 INFO L130 PetriNetUnfolder]: 75/627 cut-off events. [2022-12-13 17:34:24,905 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 17:34:24,909 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 17:34:24,931 INFO L119 LiptonReduction]: Number of co-enabled transitions 71688 [2022-12-13 17:34:27,871 INFO L134 LiptonReduction]: Checked pairs total: 288294 [2022-12-13 17:34:27,871 INFO L136 LiptonReduction]: Total number of compositions: 230 [2022-12-13 17:34:27,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:34:27,874 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;@84741c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:34:27,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 17:34:27,881 INFO L130 PetriNetUnfolder]: 15/87 cut-off events. [2022-12-13 17:34:27,881 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:34:27,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:34:27,881 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:34:27,882 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 17:34:27,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:34:27,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1932363157, now seen corresponding path program 1 times [2022-12-13 17:34:27,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:34:27,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728521493] [2022-12-13 17:34:27,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:34:27,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:34:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:34:27,918 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 17:34:27,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:34:27,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728521493] [2022-12-13 17:34:27,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728521493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:34:27,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:34:27,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:34:27,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597677637] [2022-12-13 17:34:27,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:34:27,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:34:27,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:34:27,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:34:27,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:34:27,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 604 [2022-12-13 17:34:27,930 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 17:34:27,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:34:27,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 604 [2022-12-13 17:34:27,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:34:30,530 INFO L130 PetriNetUnfolder]: 14690/34746 cut-off events. [2022-12-13 17:34:30,531 INFO L131 PetriNetUnfolder]: For 196/274 co-relation queries the response was YES. [2022-12-13 17:34:30,573 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 17:34:30,680 INFO L137 encePairwiseOnDemand]: 570/604 looper letters, 62 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2022-12-13 17:34:30,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 472 flow [2022-12-13 17:34:30,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:34:30,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:34:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1068 transitions. [2022-12-13 17:34:30,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5894039735099338 [2022-12-13 17:34:30,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1068 transitions. [2022-12-13 17:34:30,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1068 transitions. [2022-12-13 17:34:30,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:34:30,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1068 transitions. [2022-12-13 17:34:30,685 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 17:34:30,687 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 17:34:30,688 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 17:34:30,688 INFO L175 Difference]: Start difference. First operand has 161 places, 193 transitions, 404 flow. Second operand 3 states and 1068 transitions. [2022-12-13 17:34:30,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 472 flow [2022-12-13 17:34:30,689 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 17:34:30,691 INFO L231 Difference]: Finished difference. Result has 164 places, 163 transitions, 354 flow [2022-12-13 17:34:30,691 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 17:34:30,692 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 3 predicate places. [2022-12-13 17:34:30,692 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 163 transitions, 354 flow [2022-12-13 17:34:30,692 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 17:34:30,692 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:34:30,693 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:34:30,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:34:30,693 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 17:34:30,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:34:30,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1750236463, now seen corresponding path program 1 times [2022-12-13 17:34:30,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:34:30,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614512946] [2022-12-13 17:34:30,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:34:30,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:34:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:34:30,731 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 17:34:30,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:34:30,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614512946] [2022-12-13 17:34:30,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614512946] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:34:30,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161073431] [2022-12-13 17:34:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:34:30,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:34:30,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:34:30,733 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:34:30,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:34:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:34:30,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 17:34:30,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:34:30,797 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 17:34:30,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:34:30,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161073431] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:34:30,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:34:30,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 17:34:30,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103912301] [2022-12-13 17:34:30,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:34:30,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:34:30,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:34:30,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:34:30,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:34:30,808 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 604 [2022-12-13 17:34:30,810 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 17:34:30,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:34:30,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 604 [2022-12-13 17:34:30,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:34:33,580 INFO L130 PetriNetUnfolder]: 14723/35009 cut-off events. [2022-12-13 17:34:33,580 INFO L131 PetriNetUnfolder]: For 190/220 co-relation queries the response was YES. [2022-12-13 17:34:33,634 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 17:34:33,732 INFO L137 encePairwiseOnDemand]: 601/604 looper letters, 81 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2022-12-13 17:34:33,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 182 transitions, 558 flow [2022-12-13 17:34:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:34:33,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:34:33,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1055 transitions. [2022-12-13 17:34:33,735 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5822295805739515 [2022-12-13 17:34:33,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1055 transitions. [2022-12-13 17:34:33,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1055 transitions. [2022-12-13 17:34:33,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:34:33,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1055 transitions. [2022-12-13 17:34:33,737 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 17:34:33,739 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 17:34:33,739 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 17:34:33,739 INFO L175 Difference]: Start difference. First operand has 164 places, 163 transitions, 354 flow. Second operand 3 states and 1055 transitions. [2022-12-13 17:34:33,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 182 transitions, 558 flow [2022-12-13 17:34:33,741 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 17:34:33,743 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 362 flow [2022-12-13 17:34:33,743 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 17:34:33,743 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 5 predicate places. [2022-12-13 17:34:33,743 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 362 flow [2022-12-13 17:34:33,744 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 17:34:33,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:34:33,744 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 17:34:33,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:34:33,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 17:34:33,945 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 17:34:33,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:34:33,946 INFO L85 PathProgramCache]: Analyzing trace with hash 909322289, now seen corresponding path program 1 times [2022-12-13 17:34:33,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:34:33,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317013336] [2022-12-13 17:34:33,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:34:33,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:34:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:34:34,006 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 17:34:34,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:34:34,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317013336] [2022-12-13 17:34:34,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317013336] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:34:34,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452029336] [2022-12-13 17:34:34,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:34:34,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:34:34,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:34:34,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:34:34,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:34:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:34:34,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:34:34,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:34:34,090 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 17:34:34,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:34:34,104 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 17:34:34,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452029336] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:34:34,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:34:34,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 17:34:34,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512551780] [2022-12-13 17:34:34,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:34:34,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:34:34,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:34:34,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:34:34,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:34:34,121 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 604 [2022-12-13 17:34:34,124 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 17:34:34,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:34:34,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 604 [2022-12-13 17:34:34,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:34:36,866 INFO L130 PetriNetUnfolder]: 14723/34994 cut-off events. [2022-12-13 17:34:36,867 INFO L131 PetriNetUnfolder]: For 870/885 co-relation queries the response was YES. [2022-12-13 17:34:36,911 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 17:34:36,989 INFO L137 encePairwiseOnDemand]: 601/604 looper letters, 63 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2022-12-13 17:34:36,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 167 transitions, 510 flow [2022-12-13 17:34:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:34:36,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:34:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2008 transitions. [2022-12-13 17:34:36,992 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5540838852097131 [2022-12-13 17:34:36,992 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2008 transitions. [2022-12-13 17:34:36,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2008 transitions. [2022-12-13 17:34:36,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:34:36,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2008 transitions. [2022-12-13 17:34:36,995 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 17:34:36,997 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 17:34:36,998 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 17:34:36,998 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 362 flow. Second operand 6 states and 2008 transitions. [2022-12-13 17:34:36,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 167 transitions, 510 flow [2022-12-13 17:34:37,000 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 17:34:37,001 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 396 flow [2022-12-13 17:34:37,001 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 17:34:37,002 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 12 predicate places. [2022-12-13 17:34:37,002 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 396 flow [2022-12-13 17:34:37,002 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 17:34:37,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:34:37,003 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 17:34:37,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:34:37,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:34:37,204 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 17:34:37,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:34:37,205 INFO L85 PathProgramCache]: Analyzing trace with hash 626061132, now seen corresponding path program 2 times [2022-12-13 17:34:37,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:34:37,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763899844] [2022-12-13 17:34:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:34:37,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:34:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:34:37,283 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 17:34:37,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:34:37,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763899844] [2022-12-13 17:34:37,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763899844] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:34:37,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485875912] [2022-12-13 17:34:37,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:34:37,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:34:37,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:34:37,285 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:34:37,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:34:37,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:34:37,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:34:37,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:34:37,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:34:37,348 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 17:34:37,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:34:37,379 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 17:34:37,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485875912] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:34:37,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:34:37,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 17:34:37,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980347355] [2022-12-13 17:34:37,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:34:37,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 17:34:37,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:34:37,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 17:34:37,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:34:37,402 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 604 [2022-12-13 17:34:37,404 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 17:34:37,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:34:37,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 604 [2022-12-13 17:34:37,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:34:40,702 INFO L130 PetriNetUnfolder]: 14723/35000 cut-off events. [2022-12-13 17:34:40,702 INFO L131 PetriNetUnfolder]: For 904/919 co-relation queries the response was YES. [2022-12-13 17:34:40,758 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 17:34:40,839 INFO L137 encePairwiseOnDemand]: 601/604 looper letters, 63 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2022-12-13 17:34:40,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 173 transitions, 580 flow [2022-12-13 17:34:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:34:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:34:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3955 transitions. [2022-12-13 17:34:40,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.545667770419426 [2022-12-13 17:34:40,843 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3955 transitions. [2022-12-13 17:34:40,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3955 transitions. [2022-12-13 17:34:40,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:34:40,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3955 transitions. [2022-12-13 17:34:40,848 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 17:34:40,857 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 17:34:40,859 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 17:34:40,860 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 396 flow. Second operand 12 states and 3955 transitions. [2022-12-13 17:34:40,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 173 transitions, 580 flow [2022-12-13 17:34:40,862 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 17:34:40,864 INFO L231 Difference]: Finished difference. Result has 189 places, 173 transitions, 466 flow [2022-12-13 17:34:40,865 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 17:34:40,865 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 28 predicate places. [2022-12-13 17:34:40,866 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 173 transitions, 466 flow [2022-12-13 17:34:40,867 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 17:34:40,867 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:34:40,867 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 17:34:40,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:34:41,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:34:41,068 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 17:34:41,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:34:41,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1363858732, now seen corresponding path program 3 times [2022-12-13 17:34:41,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:34:41,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622227817] [2022-12-13 17:34:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:34:41,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:34:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:34:41,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:34:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:34:41,115 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:34:41,115 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:34:41,115 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-12-13 17:34:41,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-12-13 17:34:41,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-12-13 17:34:41,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-12-13 17:34:41,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-12-13 17:34:41,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-12-13 17:34:41,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-12-13 17:34:41,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-12-13 17:34:41,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-12-13 17:34:41,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-12-13 17:34:41,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-12-13 17:34:41,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-12-13 17:34:41,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-12-13 17:34:41,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-12-13 17:34:41,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-12-13 17:34:41,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-12-13 17:34:41,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-12-13 17:34:41,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-12-13 17:34:41,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-12-13 17:34:41,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-12-13 17:34:41,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-12-13 17:34:41,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-12-13 17:34:41,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:34:41,117 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-12-13 17:34:41,117 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 17:34:41,118 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 17:34:41,157 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 17:34:41,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 479 transitions, 988 flow [2022-12-13 17:34:41,294 INFO L130 PetriNetUnfolder]: 110/919 cut-off events. [2022-12-13 17:34:41,294 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 17:34:41,303 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 17:34:41,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 427 places, 479 transitions, 988 flow [2022-12-13 17:34:41,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 427 places, 479 transitions, 988 flow [2022-12-13 17:34:41,310 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:34:41,311 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 427 places, 479 transitions, 988 flow [2022-12-13 17:34:41,311 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 427 places, 479 transitions, 988 flow [2022-12-13 17:34:41,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 479 transitions, 988 flow [2022-12-13 17:34:41,440 INFO L130 PetriNetUnfolder]: 110/919 cut-off events. [2022-12-13 17:34:41,440 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 17:34:41,449 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 17:34:41,507 INFO L119 LiptonReduction]: Number of co-enabled transitions 140286 [2022-12-13 17:34:44,743 INFO L134 LiptonReduction]: Checked pairs total: 580846 [2022-12-13 17:34:44,744 INFO L136 LiptonReduction]: Total number of compositions: 294 [2022-12-13 17:34:44,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:34:44,745 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;@84741c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:34:44,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-12-13 17:34:44,749 INFO L130 PetriNetUnfolder]: 14/75 cut-off events. [2022-12-13 17:34:44,749 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:34:44,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:34:44,749 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:34:44,749 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 17:34:44,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:34:44,750 INFO L85 PathProgramCache]: Analyzing trace with hash 588647634, now seen corresponding path program 1 times [2022-12-13 17:34:44,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:34:44,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008334762] [2022-12-13 17:34:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:34:44,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:34:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:34:44,776 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 17:34:44,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:34:44,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008334762] [2022-12-13 17:34:44,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008334762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:34:44,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:34:44,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:34:44,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010830732] [2022-12-13 17:34:44,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:34:44,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:34:44,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:34:44,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:34:44,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:34:44,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 773 [2022-12-13 17:34:44,786 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 17:34:44,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:34:44,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 773 [2022-12-13 17:34:44,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:35:46,467 INFO L130 PetriNetUnfolder]: 404947/771610 cut-off events. [2022-12-13 17:35:46,467 INFO L131 PetriNetUnfolder]: For 5239/6832 co-relation queries the response was YES. [2022-12-13 17:35:48,266 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 17:35:51,085 INFO L137 encePairwiseOnDemand]: 728/773 looper letters, 81 selfloop transitions, 2 changer transitions 0/213 dead transitions. [2022-12-13 17:35:51,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 213 transitions, 622 flow [2022-12-13 17:35:51,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:35:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:35:51,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1368 transitions. [2022-12-13 17:35:51,088 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5899094437257438 [2022-12-13 17:35:51,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1368 transitions. [2022-12-13 17:35:51,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1368 transitions. [2022-12-13 17:35:51,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:35:51,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1368 transitions. [2022-12-13 17:35:51,091 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 17:35:51,093 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 17:35:51,093 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 17:35:51,093 INFO L175 Difference]: Start difference. First operand has 212 places, 255 transitions, 540 flow. Second operand 3 states and 1368 transitions. [2022-12-13 17:35:51,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 213 transitions, 622 flow [2022-12-13 17:35:51,101 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 17:35:51,102 INFO L231 Difference]: Finished difference. Result has 214 places, 213 transitions, 466 flow [2022-12-13 17:35:51,103 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 17:35:51,103 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 2 predicate places. [2022-12-13 17:35:51,103 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 213 transitions, 466 flow [2022-12-13 17:35:51,103 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 17:35:51,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:35:51,104 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:35:51,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:35:51,104 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 17:35:51,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:35:51,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1505475776, now seen corresponding path program 1 times [2022-12-13 17:35:51,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:35:51,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422300217] [2022-12-13 17:35:51,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:51,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:35:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:51,132 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 17:35:51,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:35:51,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422300217] [2022-12-13 17:35:51,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422300217] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:35:51,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661909265] [2022-12-13 17:35:51,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:51,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:51,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:35:51,133 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:35:51,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:35:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:51,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 17:35:51,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:35:51,202 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 17:35:51,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:35:51,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661909265] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:35:51,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:35:51,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 17:35:51,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802537800] [2022-12-13 17:35:51,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:35:51,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:35:51,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:35:51,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:35:51,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:35:51,211 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 773 [2022-12-13 17:35:51,213 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 17:35:51,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:35:51,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 773 [2022-12-13 17:35:51,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:36:55,744 INFO L130 PetriNetUnfolder]: 405234/776963 cut-off events. [2022-12-13 17:36:55,745 INFO L131 PetriNetUnfolder]: For 6091/7343 co-relation queries the response was YES. [2022-12-13 17:36:57,772 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 17:37:00,565 INFO L137 encePairwiseOnDemand]: 770/773 looper letters, 100 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2022-12-13 17:37:00,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 232 transitions, 708 flow [2022-12-13 17:37:00,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:37:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:37:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1344 transitions. [2022-12-13 17:37:00,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5795601552393272 [2022-12-13 17:37:00,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1344 transitions. [2022-12-13 17:37:00,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1344 transitions. [2022-12-13 17:37:00,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:37:00,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1344 transitions. [2022-12-13 17:37:00,570 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 17:37:00,572 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 17:37:00,573 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 17:37:00,573 INFO L175 Difference]: Start difference. First operand has 214 places, 213 transitions, 466 flow. Second operand 3 states and 1344 transitions. [2022-12-13 17:37:00,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 232 transitions, 708 flow [2022-12-13 17:37:00,576 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 17:37:00,578 INFO L231 Difference]: Finished difference. Result has 216 places, 214 transitions, 474 flow [2022-12-13 17:37:00,578 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 17:37:00,578 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 4 predicate places. [2022-12-13 17:37:00,579 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 214 transitions, 474 flow [2022-12-13 17:37:00,579 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 17:37:00,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:37:00,579 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:00,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:37:00,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 17:37:00,781 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 17:37:00,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:00,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1611882830, now seen corresponding path program 1 times [2022-12-13 17:37:00,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:00,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318169477] [2022-12-13 17:37:00,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:00,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:00,820 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 17:37:00,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:37:00,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318169477] [2022-12-13 17:37:00,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318169477] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:37:00,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701452824] [2022-12-13 17:37:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:00,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:37:00,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:00,822 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:37:00,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:37:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:00,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:37:00,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:00,904 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 17:37:00,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:37:00,914 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 17:37:00,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701452824] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:37:00,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:37:00,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 17:37:00,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122633153] [2022-12-13 17:37:00,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:37:00,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:37:00,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:37:00,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:37:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:37:00,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 773 [2022-12-13 17:37:00,933 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 17:37:00,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:37:00,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 773 [2022-12-13 17:37:00,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:38:07,415 INFO L130 PetriNetUnfolder]: 405234/775321 cut-off events. [2022-12-13 17:38:07,416 INFO L131 PetriNetUnfolder]: For 18178/19186 co-relation queries the response was YES. [2022-12-13 17:38:09,474 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 17:38:12,480 INFO L137 encePairwiseOnDemand]: 770/773 looper letters, 82 selfloop transitions, 5 changer transitions 0/217 dead transitions. [2022-12-13 17:38:12,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 217 transitions, 660 flow [2022-12-13 17:38:12,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:38:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:38:12,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2567 transitions. [2022-12-13 17:38:12,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5534713238464856 [2022-12-13 17:38:12,483 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2567 transitions. [2022-12-13 17:38:12,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2567 transitions. [2022-12-13 17:38:12,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:38:12,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2567 transitions. [2022-12-13 17:38:12,487 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 17:38:12,490 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 17:38:12,491 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 17:38:12,491 INFO L175 Difference]: Start difference. First operand has 216 places, 214 transitions, 474 flow. Second operand 6 states and 2567 transitions. [2022-12-13 17:38:12,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 217 transitions, 660 flow [2022-12-13 17:38:12,503 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 17:38:12,505 INFO L231 Difference]: Finished difference. Result has 223 places, 217 transitions, 508 flow [2022-12-13 17:38:12,505 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 17:38:12,506 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 11 predicate places. [2022-12-13 17:38:12,506 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 217 transitions, 508 flow [2022-12-13 17:38:12,506 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 17:38:12,506 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:38:12,506 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:38:12,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 17:38:12,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 17:38:12,707 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 17:38:12,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:38:12,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1119378508, now seen corresponding path program 2 times [2022-12-13 17:38:12,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:38:12,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418095053] [2022-12-13 17:38:12,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:38:12,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:38:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:38:12,763 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 17:38:12,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:38:12,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418095053] [2022-12-13 17:38:12,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418095053] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:38:12,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396563027] [2022-12-13 17:38:12,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:38:12,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:38:12,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:38:12,764 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:38:12,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a378ac3b-4c24-458b-8f40-6153f0a088b2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:38:12,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 17:38:12,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:38:12,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 17:38:12,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:38:12,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 17:38:12,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-12-13 17:38:12,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:38:12,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-12-13 17:38:12,929 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:38:12,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-12-13 17:38:12,947 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 17:38:12,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:38:12,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396563027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:38:12,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:38:12,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2022-12-13 17:38:12,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144131875] [2022-12-13 17:38:12,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:38:12,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:38:12,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:38:12,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:38:12,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:38:13,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 773 [2022-12-13 17:38:13,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 217 transitions, 508 flow. Second operand has 6 states, 6 states have (on average 366.1666666666667) internal successors, (2197), 6 states have internal predecessors, (2197), 0 states have call successors, (0), 0 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 17:38:13,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:38:13,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 773 [2022-12-13 17:38:13,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand