./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa --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 6a6d4c6573ed55a0a96a38de6d1424f0a577970a6c88cea50d5cb9a315d791fd --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:26:59,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:26:59,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:26:59,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:26:59,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:26:59,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:26:59,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:26:59,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:26:59,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:26:59,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:26:59,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:26:59,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:26:59,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:26:59,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:26:59,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:26:59,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:26:59,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:26:59,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:26:59,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:26:59,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:26:59,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:26:59,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:26:59,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:26:59,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:26:59,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:26:59,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:26:59,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:26:59,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:26:59,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:26:59,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:26:59,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:26:59,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:26:59,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:26:59,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:26:59,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:26:59,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:26:59,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:26:59,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:26:59,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:26:59,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:26:59,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:26:59,387 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/config/svcomp-DataRace-32bit-Automizer_Default.epf [2021-12-07 01:26:59,406 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:26:59,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:26:59,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:26:59,407 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:26:59,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:26:59,407 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:26:59,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:26:59,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:26:59,408 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:26:59,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:26:59,408 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:26:59,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 01:26:59,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:26:59,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:26:59,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:26:59,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:26:59,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:26:59,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:26:59,409 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-12-07 01:26:59,409 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:26:59,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:26:59,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:26:59,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:26:59,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:26:59,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:26:59,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:26:59,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:26:59,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:26:59,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:26:59,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:26:59,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:26:59,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:26:59,411 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:26:59,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:26:59,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:26:59,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:26:59,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a6d4c6573ed55a0a96a38de6d1424f0a577970a6c88cea50d5cb9a315d791fd [2021-12-07 01:26:59,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:26:59,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:26:59,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:26:59,607 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:26:59,607 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:26:59,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i [2021-12-07 01:26:59,649 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/data/c8cd05964/f40638abdb07413a8376a4b30aaa3f8f/FLAGcc086a78a [2021-12-07 01:27:00,045 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:27:00,046 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i [2021-12-07 01:27:00,057 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/data/c8cd05964/f40638abdb07413a8376a4b30aaa3f8f/FLAGcc086a78a [2021-12-07 01:27:00,447 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/data/c8cd05964/f40638abdb07413a8376a4b30aaa3f8f [2021-12-07 01:27:00,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:27:00,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:27:00,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:27:00,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:27:00,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:27:00,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:27:00" (1/1) ... [2021-12-07 01:27:00,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@653a8af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:27:00, skipping insertion in model container [2021-12-07 01:27:00,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:27:00" (1/1) ... [2021-12-07 01:27:00,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:27:00,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:27:00,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:27:00,716 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:27:00,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:27:00,781 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:27:00,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:27:00 WrapperNode [2021-12-07 01:27:00,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:27:00,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:27:00,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:27:00,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:27:00,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:27:00" (1/1) ... [2021-12-07 01:27:00,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:27:00" (1/1) ... [2021-12-07 01:27:00,819 INFO L137 Inliner]: procedures = 161, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2021-12-07 01:27:00,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:27:00,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:27:00,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:27:00,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:27:00,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:27:00" (1/1) ... [2021-12-07 01:27:00,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:27:00" (1/1) ... [2021-12-07 01:27:00,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:27:00" (1/1) ... [2021-12-07 01:27:00,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:27:00" (1/1) ... [2021-12-07 01:27:00,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:27:00" (1/1) ... [2021-12-07 01:27:00,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:27:00" (1/1) ... [2021-12-07 01:27:00,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:27:00" (1/1) ... [2021-12-07 01:27:00,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:27:00,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:27:00,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:27:00,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:27:00,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:27:00" (1/1) ... [2021-12-07 01:27:00,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:27:00,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:27:00,867 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:27:00,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:27:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:27:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-07 01:27:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:27:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:27:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-12-07 01:27:00,897 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-12-07 01:27:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:27:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:27:00,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:27:00,898 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-07 01:27:00,986 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:27:00,987 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:27:01,084 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:27:01,089 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:27:01,090 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 01:27:01,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:27:01 BoogieIcfgContainer [2021-12-07 01:27:01,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:27:01,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:27:01,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:27:01,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:27:01,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:27:00" (1/3) ... [2021-12-07 01:27:01,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b0c16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:27:01, skipping insertion in model container [2021-12-07 01:27:01,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:27:00" (2/3) ... [2021-12-07 01:27:01,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b0c16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:27:01, skipping insertion in model container [2021-12-07 01:27:01,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:27:01" (3/3) ... [2021-12-07 01:27:01,097 INFO L111 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_02-idx_nr.i [2021-12-07 01:27:01,101 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-07 01:27:01,101 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:27:01,101 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-07 01:27:01,102 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-07 01:27:01,120 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,120 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,121 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,121 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,121 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,121 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,121 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,121 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,122 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,122 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,122 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,122 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,122 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,123 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,123 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,123 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,123 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,123 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,123 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,124 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,124 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,124 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,124 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,124 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,124 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,125 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,125 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,125 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,125 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,125 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,125 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,125 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,128 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,128 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,129 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 01:27:01,131 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-07 01:27:01,169 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:27:01,174 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 01:27:01,175 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-07 01:27:01,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 65 transitions, 135 flow [2021-12-07 01:27:01,210 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2021-12-07 01:27:01,210 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-07 01:27:01,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2021-12-07 01:27:01,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 65 transitions, 135 flow [2021-12-07 01:27:01,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 131 flow [2021-12-07 01:27:01,224 INFO L129 PetriNetUnfolder]: 2/34 cut-off events. [2021-12-07 01:27:01,224 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-07 01:27:01,224 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:27:01,225 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:27:01,225 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-07 01:27:01,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:27:01,230 INFO L85 PathProgramCache]: Analyzing trace with hash 960930954, now seen corresponding path program 1 times [2021-12-07 01:27:01,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:27:01,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211886301] [2021-12-07 01:27:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:27:01,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:27:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:27:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:27:01,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:27:01,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211886301] [2021-12-07 01:27:01,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211886301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:27:01,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:27:01,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:27:01,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507170776] [2021-12-07 01:27:01,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:27:01,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:27:01,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:27:01,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:27:01,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:27:01,412 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 65 [2021-12-07 01:27:01,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2021-12-07 01:27:01,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:27:01,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 65 [2021-12-07 01:27:01,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:27:01,455 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-12-07 01:27:01,455 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-07 01:27:01,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 67 events. 1/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 38. Up to 9 conditions per place. [2021-12-07 01:27:01,457 INFO L132 encePairwiseOnDemand]: 61/65 looper letters, 10 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2021-12-07 01:27:01,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 67 transitions, 161 flow [2021-12-07 01:27:01,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:27:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-07 01:27:01,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2021-12-07 01:27:01,470 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9384615384615385 [2021-12-07 01:27:01,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions. [2021-12-07 01:27:01,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions. [2021-12-07 01:27:01,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:27:01,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions. [2021-12-07 01:27:01,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2021-12-07 01:27:01,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2021-12-07 01:27:01,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2021-12-07 01:27:01,486 INFO L186 Difference]: Start difference. First operand has 66 places, 64 transitions, 131 flow. Second operand 3 states and 183 transitions. [2021-12-07 01:27:01,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 67 transitions, 161 flow [2021-12-07 01:27:01,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-07 01:27:01,493 INFO L242 Difference]: Finished difference. Result has 68 places, 64 transitions, 140 flow [2021-12-07 01:27:01,495 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2021-12-07 01:27:01,499 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2021-12-07 01:27:01,499 INFO L470 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 140 flow [2021-12-07 01:27:01,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2021-12-07 01:27:01,500 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:27:01,500 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:27:01,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:27:01,500 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-07 01:27:01,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:27:01,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2006067409, now seen corresponding path program 1 times [2021-12-07 01:27:01,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:27:01,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180013985] [2021-12-07 01:27:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:27:01,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:27:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:27:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:27:01,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:27:01,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180013985] [2021-12-07 01:27:01,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180013985] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:27:01,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130793828] [2021-12-07 01:27:01,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:27:01,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:27:01,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:27:01,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:27:01,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:27:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:27:01,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:27:01,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:27:01,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:27:01,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:27:01,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130793828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:27:01,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:27:01,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-07 01:27:01,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669828797] [2021-12-07 01:27:01,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:27:01,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:27:01,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:27:01,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:27:01,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:27:01,699 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 65 [2021-12-07 01:27:01,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-12-07 01:27:01,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:27:01,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 65 [2021-12-07 01:27:01,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:27:01,763 INFO L129 PetriNetUnfolder]: 38/229 cut-off events. [2021-12-07 01:27:01,763 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-07 01:27:01,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 229 events. 38/229 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 945 event pairs, 15 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 307. Up to 54 conditions per place. [2021-12-07 01:27:01,766 INFO L132 encePairwiseOnDemand]: 57/65 looper letters, 17 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2021-12-07 01:27:01,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 206 flow [2021-12-07 01:27:01,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:27:01,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-07 01:27:01,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2021-12-07 01:27:01,769 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9128205128205128 [2021-12-07 01:27:01,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 178 transitions. [2021-12-07 01:27:01,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 178 transitions. [2021-12-07 01:27:01,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:27:01,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 178 transitions. [2021-12-07 01:27:01,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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) [2021-12-07 01:27:01,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2021-12-07 01:27:01,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2021-12-07 01:27:01,774 INFO L186 Difference]: Start difference. First operand has 68 places, 64 transitions, 140 flow. Second operand 3 states and 178 transitions. [2021-12-07 01:27:01,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 206 flow [2021-12-07 01:27:01,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 74 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-07 01:27:01,778 INFO L242 Difference]: Finished difference. Result has 71 places, 70 transitions, 190 flow [2021-12-07 01:27:01,778 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2021-12-07 01:27:01,779 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2021-12-07 01:27:01,779 INFO L470 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 190 flow [2021-12-07 01:27:01,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-12-07 01:27:01,779 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:27:01,780 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:27:01,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:27:01,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:27:01,982 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-07 01:27:01,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:27:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash -272035997, now seen corresponding path program 1 times [2021-12-07 01:27:01,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:27:01,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832842756] [2021-12-07 01:27:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:27:01,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:27:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:27:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:27:02,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:27:02,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832842756] [2021-12-07 01:27:02,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832842756] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:27:02,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996289165] [2021-12-07 01:27:02,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:27:02,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:27:02,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:27:02,139 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:27:02,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:27:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:27:02,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:27:02,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:27:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:27:02,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:27:02,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996289165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:27:02,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:27:02,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-07 01:27:02,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203050733] [2021-12-07 01:27:02,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:27:02,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:27:02,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:27:02,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:27:02,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:27:02,241 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 65 [2021-12-07 01:27:02,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-12-07 01:27:02,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:27:02,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 65 [2021-12-07 01:27:02,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:27:02,298 INFO L129 PetriNetUnfolder]: 56/309 cut-off events. [2021-12-07 01:27:02,298 INFO L130 PetriNetUnfolder]: For 85/90 co-relation queries the response was YES. [2021-12-07 01:27:02,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 309 events. 56/309 cut-off events. For 85/90 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1545 event pairs, 23 based on Foata normal form. 2/288 useless extension candidates. Maximal degree in co-relation 512. Up to 102 conditions per place. [2021-12-07 01:27:02,301 INFO L132 encePairwiseOnDemand]: 59/65 looper letters, 23 selfloop transitions, 7 changer transitions 1/80 dead transitions. [2021-12-07 01:27:02,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 290 flow [2021-12-07 01:27:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:27:02,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-07 01:27:02,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2021-12-07 01:27:02,303 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8769230769230769 [2021-12-07 01:27:02,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 171 transitions. [2021-12-07 01:27:02,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 171 transitions. [2021-12-07 01:27:02,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:27:02,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 171 transitions. [2021-12-07 01:27:02,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2021-12-07 01:27:02,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2021-12-07 01:27:02,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2021-12-07 01:27:02,306 INFO L186 Difference]: Start difference. First operand has 71 places, 70 transitions, 190 flow. Second operand 3 states and 171 transitions. [2021-12-07 01:27:02,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 290 flow [2021-12-07 01:27:02,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-07 01:27:02,309 INFO L242 Difference]: Finished difference. Result has 73 places, 75 transitions, 234 flow [2021-12-07 01:27:02,309 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=73, PETRI_TRANSITIONS=75} [2021-12-07 01:27:02,310 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2021-12-07 01:27:02,310 INFO L470 AbstractCegarLoop]: Abstraction has has 73 places, 75 transitions, 234 flow [2021-12-07 01:27:02,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-12-07 01:27:02,311 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:27:02,311 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:27:02,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:27:02,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:27:02,512 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-07 01:27:02,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:27:02,513 INFO L85 PathProgramCache]: Analyzing trace with hash 438956630, now seen corresponding path program 1 times [2021-12-07 01:27:02,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:27:02,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219399631] [2021-12-07 01:27:02,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:27:02,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:27:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:27:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:27:02,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:27:02,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219399631] [2021-12-07 01:27:02,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219399631] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:27:02,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219817672] [2021-12-07 01:27:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:27:02,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:27:02,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:27:02,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:27:02,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:27:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:27:02,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:27:02,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:27:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:27:02,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:27:02,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219817672] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:27:02,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:27:02,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-07 01:27:02,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24967032] [2021-12-07 01:27:02,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:27:02,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:27:02,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:27:02,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:27:02,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:27:02,698 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 65 [2021-12-07 01:27:02,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2021-12-07 01:27:02,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:27:02,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 65 [2021-12-07 01:27:02,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:27:02,745 INFO L129 PetriNetUnfolder]: 58/297 cut-off events. [2021-12-07 01:27:02,745 INFO L130 PetriNetUnfolder]: For 140/142 co-relation queries the response was YES. [2021-12-07 01:27:02,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 297 events. 58/297 cut-off events. For 140/142 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1451 event pairs, 17 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 579. Up to 101 conditions per place. [2021-12-07 01:27:02,747 INFO L132 encePairwiseOnDemand]: 59/65 looper letters, 21 selfloop transitions, 7 changer transitions 10/86 dead transitions. [2021-12-07 01:27:02,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 358 flow [2021-12-07 01:27:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:27:02,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-07 01:27:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2021-12-07 01:27:02,749 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-12-07 01:27:02,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2021-12-07 01:27:02,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2021-12-07 01:27:02,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:27:02,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2021-12-07 01:27:02,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2021-12-07 01:27:02,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2021-12-07 01:27:02,751 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2021-12-07 01:27:02,751 INFO L186 Difference]: Start difference. First operand has 73 places, 75 transitions, 234 flow. Second operand 3 states and 169 transitions. [2021-12-07 01:27:02,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 358 flow [2021-12-07 01:27:02,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 86 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-07 01:27:02,755 INFO L242 Difference]: Finished difference. Result has 75 places, 74 transitions, 252 flow [2021-12-07 01:27:02,755 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2021-12-07 01:27:02,755 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 9 predicate places. [2021-12-07 01:27:02,756 INFO L470 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 252 flow [2021-12-07 01:27:02,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2021-12-07 01:27:02,756 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:27:02,756 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:27:02,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:27:02,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:27:02,957 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-07 01:27:02,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:27:02,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2014859054, now seen corresponding path program 1 times [2021-12-07 01:27:02,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:27:02,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447656388] [2021-12-07 01:27:02,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:27:02,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:27:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:27:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:27:02,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:27:02,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447656388] [2021-12-07 01:27:02,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447656388] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:27:02,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542733141] [2021-12-07 01:27:02,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:27:02,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:27:02,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:27:02,992 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:27:02,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:27:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:27:03,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:27:03,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:27:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:27:03,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:27:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:27:03,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542733141] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:27:03,151 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:27:03,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-07 01:27:03,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968045696] [2021-12-07 01:27:03,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:27:03,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:27:03,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:27:03,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:27:03,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:27:03,154 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 65 [2021-12-07 01:27:03,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 252 flow. Second operand has 10 states, 10 states have (on average 57.1) internal successors, (571), 10 states have internal predecessors, (571), 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) [2021-12-07 01:27:03,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:27:03,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 65 [2021-12-07 01:27:03,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:27:03,232 INFO L129 PetriNetUnfolder]: 18/223 cut-off events. [2021-12-07 01:27:03,232 INFO L130 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2021-12-07 01:27:03,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 223 events. 18/223 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 989 event pairs, 3 based on Foata normal form. 2/219 useless extension candidates. Maximal degree in co-relation 356. Up to 27 conditions per place. [2021-12-07 01:27:03,233 INFO L132 encePairwiseOnDemand]: 59/65 looper letters, 11 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2021-12-07 01:27:03,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 84 transitions, 314 flow [2021-12-07 01:27:03,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:27:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-07 01:27:03,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 517 transitions. [2021-12-07 01:27:03,236 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8837606837606837 [2021-12-07 01:27:03,236 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 517 transitions. [2021-12-07 01:27:03,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 517 transitions. [2021-12-07 01:27:03,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:27:03,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 517 transitions. [2021-12-07 01:27:03,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 57.44444444444444) internal successors, (517), 9 states have internal predecessors, (517), 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) [2021-12-07 01:27:03,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 65.0) internal successors, (650), 10 states have internal predecessors, (650), 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) [2021-12-07 01:27:03,241 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 65.0) internal successors, (650), 10 states have internal predecessors, (650), 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) [2021-12-07 01:27:03,241 INFO L186 Difference]: Start difference. First operand has 75 places, 74 transitions, 252 flow. Second operand 9 states and 517 transitions. [2021-12-07 01:27:03,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 84 transitions, 314 flow [2021-12-07 01:27:03,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 300 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-07 01:27:03,244 INFO L242 Difference]: Finished difference. Result has 84 places, 80 transitions, 288 flow [2021-12-07 01:27:03,245 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=288, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2021-12-07 01:27:03,245 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2021-12-07 01:27:03,245 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 288 flow [2021-12-07 01:27:03,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.1) internal successors, (571), 10 states have internal predecessors, (571), 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) [2021-12-07 01:27:03,246 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 01:27:03,246 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:27:03,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 01:27:03,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:27:03,448 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-07 01:27:03,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:27:03,449 INFO L85 PathProgramCache]: Analyzing trace with hash 980069810, now seen corresponding path program 2 times [2021-12-07 01:27:03,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:27:03,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675371099] [2021-12-07 01:27:03,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:27:03,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:27:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:27:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 01:27:03,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:27:03,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675371099] [2021-12-07 01:27:03,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675371099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:27:03,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:27:03,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:27:03,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334126243] [2021-12-07 01:27:03,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:27:03,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:27:03,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:27:03,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:27:03,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:27:03,590 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 65 [2021-12-07 01:27:03,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2021-12-07 01:27:03,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 01:27:03,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 65 [2021-12-07 01:27:03,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 01:27:03,616 INFO L129 PetriNetUnfolder]: 2/96 cut-off events. [2021-12-07 01:27:03,616 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2021-12-07 01:27:03,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 96 events. 2/96 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 1 based on Foata normal form. 2/98 useless extension candidates. Maximal degree in co-relation 113. Up to 11 conditions per place. [2021-12-07 01:27:03,616 INFO L132 encePairwiseOnDemand]: 61/65 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2021-12-07 01:27:03,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 66 transitions, 228 flow [2021-12-07 01:27:03,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:27:03,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-07 01:27:03,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2021-12-07 01:27:03,618 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9128205128205128 [2021-12-07 01:27:03,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 178 transitions. [2021-12-07 01:27:03,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 178 transitions. [2021-12-07 01:27:03,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:27:03,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 178 transitions. [2021-12-07 01:27:03,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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) [2021-12-07 01:27:03,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2021-12-07 01:27:03,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2021-12-07 01:27:03,620 INFO L186 Difference]: Start difference. First operand has 84 places, 80 transitions, 288 flow. Second operand 3 states and 178 transitions. [2021-12-07 01:27:03,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 66 transitions, 228 flow [2021-12-07 01:27:03,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 66 transitions, 190 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-12-07 01:27:03,623 INFO L242 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2021-12-07 01:27:03,623 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2021-12-07 01:27:03,624 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 9 predicate places. [2021-12-07 01:27:03,624 INFO L470 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2021-12-07 01:27:03,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2021-12-07 01:27:03,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2021-12-07 01:27:03,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2021-12-07 01:27:03,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 7 remaining) [2021-12-07 01:27:03,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2021-12-07 01:27:03,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2021-12-07 01:27:03,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2021-12-07 01:27:03,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2021-12-07 01:27:03,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 01:27:03,630 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2021-12-07 01:27:03,633 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-07 01:27:03,633 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 01:27:03,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:27:03 BasicIcfg [2021-12-07 01:27:03,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 01:27:03,637 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 01:27:03,637 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 01:27:03,637 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 01:27:03,637 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:27:01" (3/4) ... [2021-12-07 01:27:03,639 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-07 01:27:03,643 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2021-12-07 01:27:03,646 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-12-07 01:27:03,646 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-07 01:27:03,646 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-07 01:27:03,668 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 01:27:03,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 01:27:03,669 INFO L158 Benchmark]: Toolchain (without parser) took 3217.01ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 79.9MB in the beginning and 93.4MB in the end (delta: -13.6MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2021-12-07 01:27:03,669 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory was 97.6MB in the beginning and 97.5MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:27:03,669 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.59ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 84.7MB in the end (delta: -4.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-07 01:27:03,670 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.37ms. Allocated memory is still 117.4MB. Free memory was 84.7MB in the beginning and 83.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:27:03,670 INFO L158 Benchmark]: Boogie Preprocessor took 23.23ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 81.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:27:03,670 INFO L158 Benchmark]: RCFGBuilder took 247.19ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 70.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-07 01:27:03,671 INFO L158 Benchmark]: TraceAbstraction took 2544.18ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 70.0MB in the beginning and 96.6MB in the end (delta: -26.6MB). Peak memory consumption was 663.7kB. Max. memory is 16.1GB. [2021-12-07 01:27:03,671 INFO L158 Benchmark]: Witness Printer took 31.44ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 93.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-07 01:27:03,672 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory was 97.6MB in the beginning and 97.5MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.59ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 84.7MB in the end (delta: -4.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.37ms. Allocated memory is still 117.4MB. Free memory was 84.7MB in the beginning and 83.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.23ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 81.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 247.19ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 70.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2544.18ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 70.0MB in the beginning and 96.6MB in the end (delta: -26.6MB). Peak memory consumption was 663.7kB. Max. memory is 16.1GB. * Witness Printer took 31.44ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 93.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 693]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 693]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 683]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 683]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 83 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 54 mSDtfsCounter, 119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=5, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 375 ConstructedInterpolants, 0 QuantifiedInterpolants, 479 SizeOfPredicates, 2 NumberOfNonLiveVariables, 370 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 21/27 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-07 01:27:03,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b27da58a-8d63-47dc-aa12-ec5619297827/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE