./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_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_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/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_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/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_d55031de-ea39-4b23-8c90-87dfc51140cb/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 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 --- 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 20:09:11,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:09:11,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:09:11,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:09:11,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:09:11,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:09:11,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:09:11,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:09:11,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:09:11,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:09:11,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:09:11,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:09:11,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:09:11,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:09:11,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:09:11,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:09:11,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:09:11,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:09:11,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:09:11,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:09:11,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:09:11,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:09:11,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:09:11,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:09:11,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:09:11,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:09:11,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:09:11,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:09:11,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:09:11,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:09:11,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:09:11,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:09:11,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:09:11,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:09:11,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:09:11,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:09:11,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:09:11,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:09:11,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:09:11,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:09:11,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:09:11,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 20:09:11,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:09:11,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:09:11,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:09:11,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:09:11,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:09:11,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:09:11,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:09:11,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:09:11,557 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:09:11,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:09:11,558 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:09:11,558 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:09:11,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:09:11,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:09:11,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:09:11,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:09:11,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:09:11,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:09:11,559 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 20:09:11,559 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:09:11,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:09:11,560 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:09:11,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:09:11,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:09:11,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:09:11,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:09:11,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:09:11,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:09:11,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:09:11,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:09:11,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:09:11,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:09:11,562 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:09:11,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:09:11,562 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:09:11,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:09:11,563 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:09:11,563 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_d55031de-ea39-4b23-8c90-87dfc51140cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 [2022-12-13 20:09:11,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:09:11,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:09:11,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:09:11,786 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:09:11,786 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:09:11,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2022-12-13 20:09:14,420 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:09:14,649 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:09:14,650 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2022-12-13 20:09:14,662 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/data/b39475847/5992cd0c66ed49b1b65ab0705e9205ff/FLAG2e349beb3 [2022-12-13 20:09:15,017 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/data/b39475847/5992cd0c66ed49b1b65ab0705e9205ff [2022-12-13 20:09:15,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:09:15,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:09:15,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:09:15,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:09:15,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:09:15,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:09:15" (1/1) ... [2022-12-13 20:09:15,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576d4177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:15, skipping insertion in model container [2022-12-13 20:09:15,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:09:15" (1/1) ... [2022-12-13 20:09:15,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:09:15,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:09:15,463 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_d55031de-ea39-4b23-8c90-87dfc51140cb/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2022-12-13 20:09:15,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:09:15,513 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:09:15,552 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_d55031de-ea39-4b23-8c90-87dfc51140cb/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2022-12-13 20:09:15,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:09:15,621 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:09:15,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:15 WrapperNode [2022-12-13 20:09:15,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:09:15,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:09:15,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:09:15,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:09:15,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:15" (1/1) ... [2022-12-13 20:09:15,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:15" (1/1) ... [2022-12-13 20:09:15,668 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 252 [2022-12-13 20:09:15,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:09:15,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:09:15,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:09:15,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:09:15,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:15" (1/1) ... [2022-12-13 20:09:15,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:15" (1/1) ... [2022-12-13 20:09:15,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:15" (1/1) ... [2022-12-13 20:09:15,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:15" (1/1) ... [2022-12-13 20:09:15,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:15" (1/1) ... [2022-12-13 20:09:15,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:15" (1/1) ... [2022-12-13 20:09:15,697 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:15" (1/1) ... [2022-12-13 20:09:15,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:15" (1/1) ... [2022-12-13 20:09:15,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:09:15,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:09:15,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:09:15,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:09:15,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:15" (1/1) ... [2022-12-13 20:09:15,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:09:15,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:09:15,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:09:15,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:09:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:09:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:09:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:09:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:09:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 20:09:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:09:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 20:09:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 20:09:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:09:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:09:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:09:15,769 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 20:09:15,895 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:09:15,897 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:09:16,270 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:09:16,278 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:09:16,279 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-12-13 20:09:16,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:09:16 BoogieIcfgContainer [2022-12-13 20:09:16,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:09:16,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:09:16,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:09:16,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:09:16,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:09:15" (1/3) ... [2022-12-13 20:09:16,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c67176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:09:16, skipping insertion in model container [2022-12-13 20:09:16,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:09:15" (2/3) ... [2022-12-13 20:09:16,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c67176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:09:16, skipping insertion in model container [2022-12-13 20:09:16,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:09:16" (3/3) ... [2022-12-13 20:09:16,290 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2022-12-13 20:09:16,298 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:09:16,309 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:09:16,309 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-13 20:09:16,309 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:09:16,393 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 20:09:16,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 272 transitions, 552 flow [2022-12-13 20:09:16,541 INFO L130 PetriNetUnfolder]: 45/383 cut-off events. [2022-12-13 20:09:16,541 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-12-13 20:09:16,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 383 events. 45/383 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1528 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 222. Up to 8 conditions per place. [2022-12-13 20:09:16,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 272 transitions, 552 flow [2022-12-13 20:09:16,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 272 transitions, 552 flow [2022-12-13 20:09:16,562 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:09:16,572 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 272 transitions, 552 flow [2022-12-13 20:09:16,574 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 272 transitions, 552 flow [2022-12-13 20:09:16,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 272 transitions, 552 flow [2022-12-13 20:09:16,636 INFO L130 PetriNetUnfolder]: 45/383 cut-off events. [2022-12-13 20:09:16,637 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-12-13 20:09:16,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 383 events. 45/383 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1528 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 222. Up to 8 conditions per place. [2022-12-13 20:09:16,647 INFO L119 LiptonReduction]: Number of co-enabled transitions 24804 [2022-12-13 20:09:18,996 INFO L134 LiptonReduction]: Checked pairs total: 99107 [2022-12-13 20:09:18,996 INFO L136 LiptonReduction]: Total number of compositions: 170 [2022-12-13 20:09:19,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:09:19,018 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;@564868eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:09:19,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 20:09:19,023 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2022-12-13 20:09:19,023 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:09:19,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:09:19,024 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-13 20:09:19,025 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 20:09:19,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:09:19,029 INFO L85 PathProgramCache]: Analyzing trace with hash 537510522, now seen corresponding path program 1 times [2022-12-13 20:09:19,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:09:19,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977869047] [2022-12-13 20:09:19,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:19,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:09:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:19,207 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 20:09:19,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:09:19,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977869047] [2022-12-13 20:09:19,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977869047] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:09:19,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:09:19,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:09:19,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435389862] [2022-12-13 20:09:19,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:09:19,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:09:19,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:09:19,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:09:19,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:09:19,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 442 [2022-12-13 20:09:19,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 135 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 20:09:19,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:09:19,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 442 [2022-12-13 20:09:19,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:09:19,469 INFO L130 PetriNetUnfolder]: 400/1557 cut-off events. [2022-12-13 20:09:19,469 INFO L131 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2022-12-13 20:09:19,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2353 conditions, 1557 events. 400/1557 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 11117 event pairs, 357 based on Foata normal form. 241/1681 useless extension candidates. Maximal degree in co-relation 2254. Up to 789 conditions per place. [2022-12-13 20:09:19,476 INFO L137 encePairwiseOnDemand]: 417/442 looper letters, 43 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2022-12-13 20:09:19,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 324 flow [2022-12-13 20:09:19,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:09:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:09:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 779 transitions. [2022-12-13 20:09:19,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5874811463046757 [2022-12-13 20:09:19,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 779 transitions. [2022-12-13 20:09:19,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 779 transitions. [2022-12-13 20:09:19,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:09:19,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 779 transitions. [2022-12-13 20:09:19,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 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 20:09:19,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:09:19,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:09:19,509 INFO L175 Difference]: Start difference. First operand has 112 places, 135 transitions, 278 flow. Second operand 3 states and 779 transitions. [2022-12-13 20:09:19,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 324 flow [2022-12-13 20:09:19,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 324 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:09:19,516 INFO L231 Difference]: Finished difference. Result has 114 places, 113 transitions, 244 flow [2022-12-13 20:09:19,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=114, PETRI_TRANSITIONS=113} [2022-12-13 20:09:19,522 INFO L288 CegarLoopForPetriNet]: 112 programPoint places, 2 predicate places. [2022-12-13 20:09:19,522 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 113 transitions, 244 flow [2022-12-13 20:09:19,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 20:09:19,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:09:19,523 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 20:09:19,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:09:19,524 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 20:09:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:09:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1599666505, now seen corresponding path program 1 times [2022-12-13 20:09:19,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:09:19,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863808497] [2022-12-13 20:09:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:19,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:09:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:19,605 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 20:09:19,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:09:19,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863808497] [2022-12-13 20:09:19,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863808497] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:09:19,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105913440] [2022-12-13 20:09:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:19,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:09:19,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:09:19,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:09:19,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:09:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:19,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:09:19,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:09:19,710 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 20:09:19,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:09:19,726 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 20:09:19,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105913440] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:09:19,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:09:19,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 20:09:19,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615168387] [2022-12-13 20:09:19,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:09:19,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:09:19,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:09:19,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:09:19,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:09:19,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 442 [2022-12-13 20:09:19,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 113 transitions, 244 flow. Second operand has 7 states, 7 states have (on average 237.57142857142858) internal successors, (1663), 7 states have internal predecessors, (1663), 0 states have call successors, (0), 0 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 20:09:19,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:09:19,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 442 [2022-12-13 20:09:19,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:09:20,023 INFO L130 PetriNetUnfolder]: 400/1560 cut-off events. [2022-12-13 20:09:20,024 INFO L131 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2022-12-13 20:09:20,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 1560 events. 400/1560 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11105 event pairs, 357 based on Foata normal form. 0/1443 useless extension candidates. Maximal degree in co-relation 2357. Up to 789 conditions per place. [2022-12-13 20:09:20,028 INFO L137 encePairwiseOnDemand]: 439/442 looper letters, 43 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2022-12-13 20:09:20,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 116 transitions, 352 flow [2022-12-13 20:09:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:09:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:09:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1467 transitions. [2022-12-13 20:09:20,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5531674208144797 [2022-12-13 20:09:20,031 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1467 transitions. [2022-12-13 20:09:20,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1467 transitions. [2022-12-13 20:09:20,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:09:20,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1467 transitions. [2022-12-13 20:09:20,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 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 20:09:20,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 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 20:09:20,038 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 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 20:09:20,038 INFO L175 Difference]: Start difference. First operand has 114 places, 113 transitions, 244 flow. Second operand 6 states and 1467 transitions. [2022-12-13 20:09:20,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 116 transitions, 352 flow [2022-12-13 20:09:20,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 116 transitions, 348 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 20:09:20,040 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 276 flow [2022-12-13 20:09:20,041 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=121, PETRI_TRANSITIONS=116} [2022-12-13 20:09:20,041 INFO L288 CegarLoopForPetriNet]: 112 programPoint places, 9 predicate places. [2022-12-13 20:09:20,041 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 276 flow [2022-12-13 20:09:20,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 237.57142857142858) internal successors, (1663), 7 states have internal predecessors, (1663), 0 states have call successors, (0), 0 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 20:09:20,042 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:09:20,042 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-12-13 20:09:20,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:09:20,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:09:20,243 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 20:09:20,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:09:20,244 INFO L85 PathProgramCache]: Analyzing trace with hash -11048518, now seen corresponding path program 2 times [2022-12-13 20:09:20,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:09:20,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524360936] [2022-12-13 20:09:20,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:20,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:09:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:20,415 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 20:09:20,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:09:20,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524360936] [2022-12-13 20:09:20,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524360936] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:09:20,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84404700] [2022-12-13 20:09:20,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:09:20,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:09:20,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:09:20,417 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:09:20,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:09:20,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:09:20,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:09:20,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:09:20,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:09:20,495 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 20:09:20,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:09:20,534 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 20:09:20,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84404700] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:09:20,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:09:20,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 20:09:20,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841010580] [2022-12-13 20:09:20,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:09:20,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 20:09:20,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:09:20,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 20:09:20,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 20:09:20,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 442 [2022-12-13 20:09:20,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 116 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 237.30769230769232) internal successors, (3085), 13 states have internal predecessors, (3085), 0 states have call successors, (0), 0 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 20:09:20,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:09:20,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 442 [2022-12-13 20:09:20,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:09:20,801 INFO L130 PetriNetUnfolder]: 400/1566 cut-off events. [2022-12-13 20:09:20,801 INFO L131 PetriNetUnfolder]: For 24/25 co-relation queries the response was YES. [2022-12-13 20:09:20,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 1566 events. 400/1566 cut-off events. For 24/25 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11101 event pairs, 357 based on Foata normal form. 6/1456 useless extension candidates. Maximal degree in co-relation 2348. Up to 789 conditions per place. [2022-12-13 20:09:20,806 INFO L137 encePairwiseOnDemand]: 439/442 looper letters, 43 selfloop transitions, 11 changer transitions 0/122 dead transitions. [2022-12-13 20:09:20,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 122 transitions, 420 flow [2022-12-13 20:09:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:09:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 20:09:20,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2892 transitions. [2022-12-13 20:09:20,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5452488687782805 [2022-12-13 20:09:20,811 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2892 transitions. [2022-12-13 20:09:20,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2892 transitions. [2022-12-13 20:09:20,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:09:20,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2892 transitions. [2022-12-13 20:09:20,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 241.0) internal successors, (2892), 12 states have internal predecessors, (2892), 0 states have call successors, (0), 0 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 20:09:20,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 442.0) internal successors, (5746), 13 states have internal predecessors, (5746), 0 states have call successors, (0), 0 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 20:09:20,825 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 442.0) internal successors, (5746), 13 states have internal predecessors, (5746), 0 states have call successors, (0), 0 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 20:09:20,826 INFO L175 Difference]: Start difference. First operand has 121 places, 116 transitions, 276 flow. Second operand 12 states and 2892 transitions. [2022-12-13 20:09:20,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 122 transitions, 420 flow [2022-12-13 20:09:20,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 122 transitions, 406 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 20:09:20,828 INFO L231 Difference]: Finished difference. Result has 137 places, 122 transitions, 346 flow [2022-12-13 20:09:20,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=346, PETRI_PLACES=137, PETRI_TRANSITIONS=122} [2022-12-13 20:09:20,829 INFO L288 CegarLoopForPetriNet]: 112 programPoint places, 25 predicate places. [2022-12-13 20:09:20,829 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 122 transitions, 346 flow [2022-12-13 20:09:20,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 237.30769230769232) internal successors, (3085), 13 states have internal predecessors, (3085), 0 states have call successors, (0), 0 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 20:09:20,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:09:20,830 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-12-13 20:09:20,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:09:21,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:09:21,031 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 20:09:21,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:09:21,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1375099034, now seen corresponding path program 3 times [2022-12-13 20:09:21,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:09:21,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980703364] [2022-12-13 20:09:21,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:21,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:09:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:09:21,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:09:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:09:21,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:09:21,098 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:09:21,099 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 20:09:21,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-12-13 20:09:21,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-12-13 20:09:21,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-12-13 20:09:21,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-12-13 20:09:21,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-12-13 20:09:21,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-12-13 20:09:21,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-12-13 20:09:21,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-12-13 20:09:21,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-12-13 20:09:21,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-12-13 20:09:21,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-12-13 20:09:21,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-12-13 20:09:21,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-12-13 20:09:21,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-12-13 20:09:21,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-12-13 20:09:21,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-12-13 20:09:21,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:09:21,104 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2022-12-13 20:09:21,106 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:09:21,106 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 20:09:21,157 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 20:09:21,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 380 transitions, 778 flow [2022-12-13 20:09:21,235 INFO L130 PetriNetUnfolder]: 75/633 cut-off events. [2022-12-13 20:09:21,235 INFO L131 PetriNetUnfolder]: For 6/9 co-relation queries the response was YES. [2022-12-13 20:09:21,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 633 events. 75/633 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3124 event pairs, 0 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 385. Up to 12 conditions per place. [2022-12-13 20:09:21,239 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 380 transitions, 778 flow [2022-12-13 20:09:21,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 380 transitions, 778 flow [2022-12-13 20:09:21,243 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:09:21,243 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 340 places, 380 transitions, 778 flow [2022-12-13 20:09:21,244 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 340 places, 380 transitions, 778 flow [2022-12-13 20:09:21,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 380 transitions, 778 flow [2022-12-13 20:09:21,310 INFO L130 PetriNetUnfolder]: 75/633 cut-off events. [2022-12-13 20:09:21,310 INFO L131 PetriNetUnfolder]: For 6/9 co-relation queries the response was YES. [2022-12-13 20:09:21,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 633 events. 75/633 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3124 event pairs, 0 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 385. Up to 12 conditions per place. [2022-12-13 20:09:21,370 INFO L119 LiptonReduction]: Number of co-enabled transitions 74412 [2022-12-13 20:09:24,311 INFO L134 LiptonReduction]: Checked pairs total: 294569 [2022-12-13 20:09:24,311 INFO L136 LiptonReduction]: Total number of compositions: 226 [2022-12-13 20:09:24,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:09:24,315 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;@564868eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:09:24,315 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 20:09:24,322 INFO L130 PetriNetUnfolder]: 15/89 cut-off events. [2022-12-13 20:09:24,322 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:09:24,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:09:24,322 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:09:24,322 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 20:09:24,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:09:24,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1131712030, now seen corresponding path program 1 times [2022-12-13 20:09:24,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:09:24,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467523476] [2022-12-13 20:09:24,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:24,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:09:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:24,361 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 20:09:24,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:09:24,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467523476] [2022-12-13 20:09:24,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467523476] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:09:24,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:09:24,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:09:24,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142060636] [2022-12-13 20:09:24,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:09:24,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:09:24,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:09:24,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:09:24,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:09:24,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 606 [2022-12-13 20:09:24,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 201 transitions, 420 flow. Second operand has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 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 20:09:24,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:09:24,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 606 [2022-12-13 20:09:24,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:09:27,495 INFO L130 PetriNetUnfolder]: 15600/37884 cut-off events. [2022-12-13 20:09:27,495 INFO L131 PetriNetUnfolder]: For 206/240 co-relation queries the response was YES. [2022-12-13 20:09:27,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61195 conditions, 37884 events. 15600/37884 cut-off events. For 206/240 co-relation queries the response was YES. Maximal size of possible extension queue 967. Compared 422488 event pairs, 14375 based on Foata normal form. 6700/40964 useless extension candidates. Maximal degree in co-relation 27816. Up to 23191 conditions per place. [2022-12-13 20:09:27,741 INFO L137 encePairwiseOnDemand]: 570/606 looper letters, 63 selfloop transitions, 2 changer transitions 0/167 dead transitions. [2022-12-13 20:09:27,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 167 transitions, 482 flow [2022-12-13 20:09:27,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:09:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:09:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1089 transitions. [2022-12-13 20:09:27,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.599009900990099 [2022-12-13 20:09:27,746 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1089 transitions. [2022-12-13 20:09:27,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1089 transitions. [2022-12-13 20:09:27,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:09:27,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1089 transitions. [2022-12-13 20:09:27,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 363.0) internal successors, (1089), 3 states have internal predecessors, (1089), 0 states have call successors, (0), 0 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 20:09:27,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 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 20:09:27,755 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 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 20:09:27,755 INFO L175 Difference]: Start difference. First operand has 167 places, 201 transitions, 420 flow. Second operand 3 states and 1089 transitions. [2022-12-13 20:09:27,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 167 transitions, 482 flow [2022-12-13 20:09:27,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 167 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:09:27,760 INFO L231 Difference]: Finished difference. Result has 168 places, 167 transitions, 362 flow [2022-12-13 20:09:27,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=168, PETRI_TRANSITIONS=167} [2022-12-13 20:09:27,761 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 1 predicate places. [2022-12-13 20:09:27,762 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 167 transitions, 362 flow [2022-12-13 20:09:27,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 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 20:09:27,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:09:27,762 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:09:27,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:09:27,763 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 20:09:27,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:09:27,763 INFO L85 PathProgramCache]: Analyzing trace with hash -582367968, now seen corresponding path program 1 times [2022-12-13 20:09:27,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:09:27,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096975129] [2022-12-13 20:09:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:27,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:09:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:27,804 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 20:09:27,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:09:27,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096975129] [2022-12-13 20:09:27,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096975129] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:09:27,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016343987] [2022-12-13 20:09:27,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:27,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:09:27,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:09:27,806 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:09:27,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:09:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:27,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:09:27,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:09:27,874 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 20:09:27,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:09:27,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016343987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:09:27,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:09:27,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 20:09:27,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138636934] [2022-12-13 20:09:27,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:09:27,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:09:27,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:09:27,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:09:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:09:27,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 606 [2022-12-13 20:09:27,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 167 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 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 20:09:27,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:09:27,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 606 [2022-12-13 20:09:27,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:09:30,934 INFO L130 PetriNetUnfolder]: 15180/37812 cut-off events. [2022-12-13 20:09:30,934 INFO L131 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2022-12-13 20:09:30,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60704 conditions, 37812 events. 15180/37812 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 966. Compared 430729 event pairs, 6851 based on Foata normal form. 0/34474 useless extension candidates. Maximal degree in co-relation 60691. Up to 22725 conditions per place. [2022-12-13 20:09:31,108 INFO L137 encePairwiseOnDemand]: 603/606 looper letters, 83 selfloop transitions, 2 changer transitions 0/187 dead transitions. [2022-12-13 20:09:31,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 187 transitions, 572 flow [2022-12-13 20:09:31,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:09:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:09:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1075 transitions. [2022-12-13 20:09:31,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5913091309130913 [2022-12-13 20:09:31,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1075 transitions. [2022-12-13 20:09:31,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1075 transitions. [2022-12-13 20:09:31,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:09:31,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1075 transitions. [2022-12-13 20:09:31,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.3333333333333) internal successors, (1075), 3 states have internal predecessors, (1075), 0 states have call successors, (0), 0 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 20:09:31,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 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 20:09:31,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 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 20:09:31,117 INFO L175 Difference]: Start difference. First operand has 168 places, 167 transitions, 362 flow. Second operand 3 states and 1075 transitions. [2022-12-13 20:09:31,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 187 transitions, 572 flow [2022-12-13 20:09:31,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 187 transitions, 568 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 20:09:31,120 INFO L231 Difference]: Finished difference. Result has 170 places, 168 transitions, 370 flow [2022-12-13 20:09:31,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=170, PETRI_TRANSITIONS=168} [2022-12-13 20:09:31,121 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 3 predicate places. [2022-12-13 20:09:31,121 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 168 transitions, 370 flow [2022-12-13 20:09:31,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 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 20:09:31,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:09:31,122 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 20:09:31,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:09:31,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:09:31,323 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 20:09:31,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:09:31,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1923254616, now seen corresponding path program 1 times [2022-12-13 20:09:31,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:09:31,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476811466] [2022-12-13 20:09:31,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:31,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:09:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,392 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 20:09:31,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:09:31,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476811466] [2022-12-13 20:09:31,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476811466] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:09:31,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530427647] [2022-12-13 20:09:31,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:31,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:09:31,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:09:31,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:09:31,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:09:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:31,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:09:31,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:09:31,460 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 20:09:31,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:09:31,473 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 20:09:31,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530427647] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:09:31,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:09:31,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 20:09:31,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679729697] [2022-12-13 20:09:31,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:09:31,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:09:31,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:09:31,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:09:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:09:31,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 606 [2022-12-13 20:09:31,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 168 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 330.7142857142857) internal successors, (2315), 7 states have internal predecessors, (2315), 0 states have call successors, (0), 0 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 20:09:31,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:09:31,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 606 [2022-12-13 20:09:31,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:09:34,387 INFO L130 PetriNetUnfolder]: 15598/38102 cut-off events. [2022-12-13 20:09:34,387 INFO L131 PetriNetUnfolder]: For 899/899 co-relation queries the response was YES. [2022-12-13 20:09:34,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62180 conditions, 38102 events. 15598/38102 cut-off events. For 899/899 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 426688 event pairs, 14375 based on Foata normal form. 3/34839 useless extension candidates. Maximal degree in co-relation 62152. Up to 23204 conditions per place. [2022-12-13 20:09:34,533 INFO L137 encePairwiseOnDemand]: 603/606 looper letters, 64 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2022-12-13 20:09:34,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 171 transitions, 520 flow [2022-12-13 20:09:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:09:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:09:34,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2045 transitions. [2022-12-13 20:09:34,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5624312431243125 [2022-12-13 20:09:34,537 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2045 transitions. [2022-12-13 20:09:34,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2045 transitions. [2022-12-13 20:09:34,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:09:34,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2045 transitions. [2022-12-13 20:09:34,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 340.8333333333333) internal successors, (2045), 6 states have internal predecessors, (2045), 0 states have call successors, (0), 0 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 20:09:34,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 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 20:09:34,545 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 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 20:09:34,545 INFO L175 Difference]: Start difference. First operand has 170 places, 168 transitions, 370 flow. Second operand 6 states and 2045 transitions. [2022-12-13 20:09:34,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 171 transitions, 520 flow [2022-12-13 20:09:34,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 171 transitions, 518 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:09:34,547 INFO L231 Difference]: Finished difference. Result has 177 places, 171 transitions, 404 flow [2022-12-13 20:09:34,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=404, PETRI_PLACES=177, PETRI_TRANSITIONS=171} [2022-12-13 20:09:34,548 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 10 predicate places. [2022-12-13 20:09:34,548 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 171 transitions, 404 flow [2022-12-13 20:09:34,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 330.7142857142857) internal successors, (2315), 7 states have internal predecessors, (2315), 0 states have call successors, (0), 0 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 20:09:34,549 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:09:34,549 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 20:09:34,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:09:34,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:09:34,751 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 20:09:34,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:09:34,752 INFO L85 PathProgramCache]: Analyzing trace with hash -300416638, now seen corresponding path program 2 times [2022-12-13 20:09:34,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:09:34,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208518771] [2022-12-13 20:09:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:34,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:09:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:34,840 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 20:09:34,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:09:34,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208518771] [2022-12-13 20:09:34,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208518771] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:09:34,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485446693] [2022-12-13 20:09:34,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:09:34,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:09:34,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:09:34,841 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:09:34,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:09:34,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:09:34,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:09:34,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:09:34,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:09:34,926 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 20:09:34,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:09:34,959 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 20:09:34,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485446693] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:09:34,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:09:34,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 20:09:34,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205161954] [2022-12-13 20:09:34,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:09:34,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 20:09:34,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:09:34,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 20:09:34,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 20:09:34,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 606 [2022-12-13 20:09:34,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 171 transitions, 404 flow. Second operand has 13 states, 13 states have (on average 330.38461538461536) internal successors, (4295), 13 states have internal predecessors, (4295), 0 states have call successors, (0), 0 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 20:09:34,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:09:34,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 606 [2022-12-13 20:09:34,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:09:38,448 INFO L130 PetriNetUnfolder]: 15598/38108 cut-off events. [2022-12-13 20:09:38,448 INFO L131 PetriNetUnfolder]: For 933/933 co-relation queries the response was YES. [2022-12-13 20:09:38,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62200 conditions, 38108 events. 15598/38108 cut-off events. For 933/933 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 426803 event pairs, 14375 based on Foata normal form. 6/34848 useless extension candidates. Maximal degree in co-relation 62140. Up to 23204 conditions per place. [2022-12-13 20:09:38,645 INFO L137 encePairwiseOnDemand]: 603/606 looper letters, 64 selfloop transitions, 11 changer transitions 0/177 dead transitions. [2022-12-13 20:09:38,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 177 transitions, 590 flow [2022-12-13 20:09:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:09:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 20:09:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4028 transitions. [2022-12-13 20:09:38,653 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5539053905390539 [2022-12-13 20:09:38,653 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4028 transitions. [2022-12-13 20:09:38,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4028 transitions. [2022-12-13 20:09:38,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:09:38,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4028 transitions. [2022-12-13 20:09:38,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 335.6666666666667) internal successors, (4028), 12 states have internal predecessors, (4028), 0 states have call successors, (0), 0 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 20:09:38,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 606.0) internal successors, (7878), 13 states have internal predecessors, (7878), 0 states have call successors, (0), 0 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 20:09:38,681 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 606.0) internal successors, (7878), 13 states have internal predecessors, (7878), 0 states have call successors, (0), 0 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 20:09:38,681 INFO L175 Difference]: Start difference. First operand has 177 places, 171 transitions, 404 flow. Second operand 12 states and 4028 transitions. [2022-12-13 20:09:38,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 177 transitions, 590 flow [2022-12-13 20:09:38,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 177 transitions, 576 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 20:09:38,690 INFO L231 Difference]: Finished difference. Result has 193 places, 177 transitions, 474 flow [2022-12-13 20:09:38,691 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=474, PETRI_PLACES=193, PETRI_TRANSITIONS=177} [2022-12-13 20:09:38,692 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 26 predicate places. [2022-12-13 20:09:38,692 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 177 transitions, 474 flow [2022-12-13 20:09:38,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 330.38461538461536) internal successors, (4295), 13 states have internal predecessors, (4295), 0 states have call successors, (0), 0 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 20:09:38,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:09:38,694 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 20:09:38,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:09:38,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 20:09:38,896 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 20:09:38,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:09:38,897 INFO L85 PathProgramCache]: Analyzing trace with hash -496774718, now seen corresponding path program 3 times [2022-12-13 20:09:38,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:09:38,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806631836] [2022-12-13 20:09:38,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:38,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:09:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:09:38,946 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:09:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:09:38,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:09:38,966 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:09:38,967 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-12-13 20:09:38,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-12-13 20:09:38,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-12-13 20:09:38,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-12-13 20:09:38,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-12-13 20:09:38,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-12-13 20:09:38,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-12-13 20:09:38,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-12-13 20:09:38,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-12-13 20:09:38,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-12-13 20:09:38,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-12-13 20:09:38,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-12-13 20:09:38,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-12-13 20:09:38,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-12-13 20:09:38,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-12-13 20:09:38,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-12-13 20:09:38,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-12-13 20:09:38,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-12-13 20:09:38,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-12-13 20:09:38,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-12-13 20:09:38,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-12-13 20:09:38,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-12-13 20:09:38,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:09:38,969 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-12-13 20:09:38,969 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:09:38,970 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 20:09:39,012 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 20:09:39,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 488 transitions, 1006 flow [2022-12-13 20:09:39,190 INFO L130 PetriNetUnfolder]: 110/928 cut-off events. [2022-12-13 20:09:39,190 INFO L131 PetriNetUnfolder]: For 19/24 co-relation queries the response was YES. [2022-12-13 20:09:39,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 928 events. 110/928 cut-off events. For 19/24 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5115 event pairs, 1 based on Foata normal form. 0/771 useless extension candidates. Maximal degree in co-relation 641. Up to 16 conditions per place. [2022-12-13 20:09:39,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 488 transitions, 1006 flow [2022-12-13 20:09:39,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 436 places, 488 transitions, 1006 flow [2022-12-13 20:09:39,208 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:09:39,208 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 436 places, 488 transitions, 1006 flow [2022-12-13 20:09:39,208 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 436 places, 488 transitions, 1006 flow [2022-12-13 20:09:39,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 488 transitions, 1006 flow [2022-12-13 20:09:39,374 INFO L130 PetriNetUnfolder]: 110/928 cut-off events. [2022-12-13 20:09:39,374 INFO L131 PetriNetUnfolder]: For 19/24 co-relation queries the response was YES. [2022-12-13 20:09:39,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 928 events. 110/928 cut-off events. For 19/24 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5115 event pairs, 1 based on Foata normal form. 0/771 useless extension candidates. Maximal degree in co-relation 641. Up to 16 conditions per place. [2022-12-13 20:09:39,437 INFO L119 LiptonReduction]: Number of co-enabled transitions 146280 [2022-12-13 20:09:43,510 INFO L134 LiptonReduction]: Checked pairs total: 580842 [2022-12-13 20:09:43,510 INFO L136 LiptonReduction]: Total number of compositions: 295 [2022-12-13 20:09:43,512 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:09:43,512 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;@564868eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:09:43,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-12-13 20:09:43,517 INFO L130 PetriNetUnfolder]: 14/76 cut-off events. [2022-12-13 20:09:43,517 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:09:43,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:09:43,518 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:09:43,518 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 20:09:43,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:09:43,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1401397151, now seen corresponding path program 1 times [2022-12-13 20:09:43,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:09:43,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552679114] [2022-12-13 20:09:43,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:09:43,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:09:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:09:43,545 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 20:09:43,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:09:43,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552679114] [2022-12-13 20:09:43,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552679114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:09:43,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:09:43,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:09:43,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322833546] [2022-12-13 20:09:43,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:09:43,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:09:43,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:09:43,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:09:43,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:09:43,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 783 [2022-12-13 20:09:43,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 257 transitions, 544 flow. Second operand has 3 states, 3 states have (on average 424.6666666666667) internal successors, (1274), 3 states have internal predecessors, (1274), 0 states have call successors, (0), 0 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 20:09:43,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:09:43,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 783 [2022-12-13 20:09:43,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:48,945 INFO L130 PetriNetUnfolder]: 427307/821837 cut-off events. [2022-12-13 20:10:48,945 INFO L131 PetriNetUnfolder]: For 5203/5677 co-relation queries the response was YES. [2022-12-13 20:10:50,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380766 conditions, 821837 events. 427307/821837 cut-off events. For 5203/5677 co-relation queries the response was YES. Maximal size of possible extension queue 16568. Compared 10999504 event pairs, 398450 based on Foata normal form. 134223/881217 useless extension candidates. Maximal degree in co-relation 306769. Up to 556160 conditions per place. [2022-12-13 20:10:53,978 INFO L137 encePairwiseOnDemand]: 738/783 looper letters, 82 selfloop transitions, 2 changer transitions 0/215 dead transitions. [2022-12-13 20:10:53,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 215 transitions, 628 flow [2022-12-13 20:10:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:10:53,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:10:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1396 transitions. [2022-12-13 20:10:53,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5942954448701575 [2022-12-13 20:10:53,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1396 transitions. [2022-12-13 20:10:53,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1396 transitions. [2022-12-13 20:10:53,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:53,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1396 transitions. [2022-12-13 20:10:53,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 465.3333333333333) internal successors, (1396), 3 states have internal predecessors, (1396), 0 states have call successors, (0), 0 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 20:10:53,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 783.0) internal successors, (3132), 4 states have internal predecessors, (3132), 0 states have call successors, (0), 0 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 20:10:53,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 783.0) internal successors, (3132), 4 states have internal predecessors, (3132), 0 states have call successors, (0), 0 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 20:10:53,991 INFO L175 Difference]: Start difference. First operand has 214 places, 257 transitions, 544 flow. Second operand 3 states and 1396 transitions. [2022-12-13 20:10:53,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 215 transitions, 628 flow [2022-12-13 20:10:53,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 215 transitions, 628 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:10:53,997 INFO L231 Difference]: Finished difference. Result has 216 places, 215 transitions, 470 flow [2022-12-13 20:10:53,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=783, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=216, PETRI_TRANSITIONS=215} [2022-12-13 20:10:53,998 INFO L288 CegarLoopForPetriNet]: 214 programPoint places, 2 predicate places. [2022-12-13 20:10:53,998 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 215 transitions, 470 flow [2022-12-13 20:10:53,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 424.6666666666667) internal successors, (1274), 3 states have internal predecessors, (1274), 0 states have call successors, (0), 0 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 20:10:53,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:53,998 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:10:53,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:10:53,999 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 20:10:53,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:53,999 INFO L85 PathProgramCache]: Analyzing trace with hash 775187466, now seen corresponding path program 1 times [2022-12-13 20:10:53,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:53,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938875144] [2022-12-13 20:10:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:53,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:54,029 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 20:10:54,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:54,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938875144] [2022-12-13 20:10:54,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938875144] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:10:54,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915618090] [2022-12-13 20:10:54,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:54,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:10:54,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:10:54,031 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:10:54,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:10:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:54,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:10:54,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:10:54,104 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 20:10:54,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:10:54,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915618090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:54,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:10:54,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-13 20:10:54,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407255139] [2022-12-13 20:10:54,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:54,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:10:54,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:54,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:10:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:10:54,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 783 [2022-12-13 20:10:54,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 215 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 425.0) internal successors, (1275), 3 states have internal predecessors, (1275), 0 states have call successors, (0), 0 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 20:10:54,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:54,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 783 [2022-12-13 20:10:54,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:11:58,802 INFO L130 PetriNetUnfolder]: 419957/809667 cut-off events. [2022-12-13 20:11:58,802 INFO L131 PetriNetUnfolder]: For 5793/6813 co-relation queries the response was YES. [2022-12-13 20:12:01,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1361985 conditions, 809667 events. 419957/809667 cut-off events. For 5793/6813 co-relation queries the response was YES. Maximal size of possible extension queue 16646. Compared 10877226 event pairs, 261002 based on Foata normal form. 0/735735 useless extension candidates. Maximal degree in co-relation 1361971. Up to 549282 conditions per place. [2022-12-13 20:12:04,127 INFO L137 encePairwiseOnDemand]: 780/783 looper letters, 102 selfloop transitions, 2 changer transitions 0/235 dead transitions. [2022-12-13 20:12:04,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 235 transitions, 718 flow [2022-12-13 20:12:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:12:04,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:12:04,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1373 transitions. [2022-12-13 20:12:04,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5845040442741593 [2022-12-13 20:12:04,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1373 transitions. [2022-12-13 20:12:04,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1373 transitions. [2022-12-13 20:12:04,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:12:04,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1373 transitions. [2022-12-13 20:12:04,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 457.6666666666667) internal successors, (1373), 3 states have internal predecessors, (1373), 0 states have call successors, (0), 0 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 20:12:04,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 783.0) internal successors, (3132), 4 states have internal predecessors, (3132), 0 states have call successors, (0), 0 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 20:12:04,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 783.0) internal successors, (3132), 4 states have internal predecessors, (3132), 0 states have call successors, (0), 0 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 20:12:04,136 INFO L175 Difference]: Start difference. First operand has 216 places, 215 transitions, 470 flow. Second operand 3 states and 1373 transitions. [2022-12-13 20:12:04,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 235 transitions, 718 flow [2022-12-13 20:12:04,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 235 transitions, 714 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 20:12:04,140 INFO L231 Difference]: Finished difference. Result has 218 places, 216 transitions, 478 flow [2022-12-13 20:12:04,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=783, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=218, PETRI_TRANSITIONS=216} [2022-12-13 20:12:04,141 INFO L288 CegarLoopForPetriNet]: 214 programPoint places, 4 predicate places. [2022-12-13 20:12:04,141 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 216 transitions, 478 flow [2022-12-13 20:12:04,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 425.0) internal successors, (1275), 3 states have internal predecessors, (1275), 0 states have call successors, (0), 0 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 20:12:04,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:12:04,142 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:12:04,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:12:04,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:04,343 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 20:12:04,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:04,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1741034700, now seen corresponding path program 1 times [2022-12-13 20:12:04,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:04,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537570945] [2022-12-13 20:12:04,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:04,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:04,389 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 20:12:04,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:04,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537570945] [2022-12-13 20:12:04,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537570945] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:12:04,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582903572] [2022-12-13 20:12:04,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:04,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:04,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:04,391 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:04,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:12:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:04,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:12:04,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:04,470 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 20:12:04,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:12:04,480 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 20:12:04,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582903572] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:12:04,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:12:04,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 20:12:04,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240666029] [2022-12-13 20:12:04,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:12:04,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:12:04,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:12:04,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:12:04,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:12:04,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 783 [2022-12-13 20:12:04,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 216 transitions, 478 flow. Second operand has 7 states, 7 states have (on average 423.85714285714283) internal successors, (2967), 7 states have internal predecessors, (2967), 0 states have call successors, (0), 0 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 20:12:04,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:12:04,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 783 [2022-12-13 20:12:04,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:13:13,380 INFO L130 PetriNetUnfolder]: 427593/820589 cut-off events. [2022-12-13 20:13:13,381 INFO L131 PetriNetUnfolder]: For 18533/19450 co-relation queries the response was YES. [2022-12-13 20:13:15,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1393221 conditions, 820589 events. 427593/820589 cut-off events. For 18533/19450 co-relation queries the response was YES. Maximal size of possible extension queue 16692. Compared 10976312 event pairs, 398450 based on Foata normal form. 3/751872 useless extension candidates. Maximal degree in co-relation 1393192. Up to 556797 conditions per place. [2022-12-13 20:13:18,984 INFO L137 encePairwiseOnDemand]: 780/783 looper letters, 83 selfloop transitions, 5 changer transitions 0/219 dead transitions. [2022-12-13 20:13:18,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 219 transitions, 666 flow [2022-12-13 20:13:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:13:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:13:18,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2622 transitions. [2022-12-13 20:13:18,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558109833971903 [2022-12-13 20:13:18,989 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2622 transitions. [2022-12-13 20:13:18,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2622 transitions. [2022-12-13 20:13:18,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:13:18,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2622 transitions. [2022-12-13 20:13:18,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 437.0) internal successors, (2622), 6 states have internal predecessors, (2622), 0 states have call successors, (0), 0 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 20:13:18,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 783.0) internal successors, (5481), 7 states have internal predecessors, (5481), 0 states have call successors, (0), 0 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 20:13:18,996 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 783.0) internal successors, (5481), 7 states have internal predecessors, (5481), 0 states have call successors, (0), 0 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 20:13:18,996 INFO L175 Difference]: Start difference. First operand has 218 places, 216 transitions, 478 flow. Second operand 6 states and 2622 transitions. [2022-12-13 20:13:18,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 219 transitions, 666 flow [2022-12-13 20:13:19,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 219 transitions, 664 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:13:19,008 INFO L231 Difference]: Finished difference. Result has 225 places, 219 transitions, 512 flow [2022-12-13 20:13:19,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=783, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=512, PETRI_PLACES=225, PETRI_TRANSITIONS=219} [2022-12-13 20:13:19,009 INFO L288 CegarLoopForPetriNet]: 214 programPoint places, 11 predicate places. [2022-12-13 20:13:19,009 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 219 transitions, 512 flow [2022-12-13 20:13:19,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 423.85714285714283) internal successors, (2967), 7 states have internal predecessors, (2967), 0 states have call successors, (0), 0 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 20:13:19,009 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:13:19,009 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:13:19,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 20:13:19,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:13:19,210 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 20:13:19,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:13:19,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1862227342, now seen corresponding path program 2 times [2022-12-13 20:13:19,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:13:19,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135082373] [2022-12-13 20:13:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:13:19,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:13:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:13:19,267 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 20:13:19,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:13:19,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135082373] [2022-12-13 20:13:19,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135082373] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:13:19,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371977785] [2022-12-13 20:13:19,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:13:19,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:13:19,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:13:19,269 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:13:19,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d55031de-ea39-4b23-8c90-87dfc51140cb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 20:13:19,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:13:19,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:13:19,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 20:13:19,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:13:19,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 20:13:19,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 20:13:19,380 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:13:19,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 20:13:19,401 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:13:19,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-12-13 20:13:19,419 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 20:13:19,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:13:19,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371977785] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:13:19,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:13:19,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2022-12-13 20:13:19,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149779246] [2022-12-13 20:13:19,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:13:19,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:13:19,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:13:19,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:13:19,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:13:19,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 783 [2022-12-13 20:13:19,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 219 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 376.1666666666667) internal successors, (2257), 6 states have internal predecessors, (2257), 0 states have call successors, (0), 0 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 20:13:19,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:13:19,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 783 [2022-12-13 20:13:19,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand