./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc --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 1e7e50acdaac6c5347f0e6861619a1b564ff01a6e5e780f6d69a20f7f739312d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 19:53:28,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:53:28,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:53:28,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:53:28,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:53:28,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:53:28,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:53:28,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:53:28,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:53:28,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:53:28,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:53:28,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:53:28,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:53:28,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:53:28,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:53:28,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:53:28,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:53:28,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:53:28,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:53:28,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:53:28,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:53:28,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:53:28,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:53:28,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:53:28,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:53:28,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:53:28,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:53:28,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:53:28,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:53:28,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:53:28,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:53:28,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:53:28,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:53:28,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:53:29,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:53:29,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:53:29,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:53:29,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:53:29,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:53:29,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:53:29,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:53:29,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 19:53:29,056 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:53:29,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:53:29,057 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:53:29,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:53:29,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:53:29,059 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:53:29,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:53:29,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:53:29,061 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:53:29,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:53:29,062 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:53:29,063 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 19:53:29,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:53:29,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:53:29,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:53:29,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:53:29,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:53:29,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:53:29,065 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 19:53:29,065 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:53:29,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:53:29,065 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:53:29,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:53:29,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:53:29,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:53:29,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:53:29,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:53:29,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:53:29,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:53:29,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:53:29,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:53:29,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:53:29,071 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:53:29,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:53:29,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:53:29,072 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_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e7e50acdaac6c5347f0e6861619a1b564ff01a6e5e780f6d69a20f7f739312d [2022-11-02 19:53:29,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:53:29,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:53:29,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:53:29,575 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:53:29,576 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:53:29,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i [2022-11-02 19:53:29,673 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/data/256a63072/6924fb1533a345849a8c8d7680bb9950/FLAGb9ffce3b3 [2022-11-02 19:53:30,332 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:53:30,332 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i [2022-11-02 19:53:30,355 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/data/256a63072/6924fb1533a345849a8c8d7680bb9950/FLAGb9ffce3b3 [2022-11-02 19:53:30,583 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/data/256a63072/6924fb1533a345849a8c8d7680bb9950 [2022-11-02 19:53:30,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:53:30,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:53:30,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:53:30,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:53:30,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:53:30,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:53:30" (1/1) ... [2022-11-02 19:53:30,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@285cdace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:30, skipping insertion in model container [2022-11-02 19:53:30,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:53:30" (1/1) ... [2022-11-02 19:53:30,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:53:30,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:53:31,233 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2022-11-02 19:53:31,239 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2022-11-02 19:53:31,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:53:31,258 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:53:31,320 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2022-11-02 19:53:31,323 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2022-11-02 19:53:31,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:53:31,368 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:53:31,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:31 WrapperNode [2022-11-02 19:53:31,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:53:31,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:53:31,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:53:31,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:53:31,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:31" (1/1) ... [2022-11-02 19:53:31,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:31" (1/1) ... [2022-11-02 19:53:31,459 INFO L138 Inliner]: procedures = 172, calls = 20, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 140 [2022-11-02 19:53:31,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:53:31,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:53:31,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:53:31,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:53:31,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:31" (1/1) ... [2022-11-02 19:53:31,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:31" (1/1) ... [2022-11-02 19:53:31,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:31" (1/1) ... [2022-11-02 19:53:31,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:31" (1/1) ... [2022-11-02 19:53:31,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:31" (1/1) ... [2022-11-02 19:53:31,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:31" (1/1) ... [2022-11-02 19:53:31,523 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:31" (1/1) ... [2022-11-02 19:53:31,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:31" (1/1) ... [2022-11-02 19:53:31,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:53:31,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:53:31,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:53:31,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:53:31,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:31" (1/1) ... [2022-11-02 19:53:31,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:53:31,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:31,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:53:31,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:53:31,628 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 19:53:31,631 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 19:53:31,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 19:53:31,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:53:31,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 19:53:31,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 19:53:31,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:53:31,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:53:31,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:53:31,635 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 19:53:31,853 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:53:31,856 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:53:32,351 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:53:32,626 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:53:32,627 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:53:32,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:53:32 BoogieIcfgContainer [2022-11-02 19:53:32,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:53:32,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:53:32,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:53:32,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:53:32,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:53:30" (1/3) ... [2022-11-02 19:53:32,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68371e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:53:32, skipping insertion in model container [2022-11-02 19:53:32,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:31" (2/3) ... [2022-11-02 19:53:32,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68371e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:53:32, skipping insertion in model container [2022-11-02 19:53:32,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:53:32" (3/3) ... [2022-11-02 19:53:32,656 INFO L112 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2022-11-02 19:53:32,670 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 19:53:32,684 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:53:32,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-02 19:53:32,685 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 19:53:32,746 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 19:53:32,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 80 transitions, 165 flow [2022-11-02 19:53:32,854 INFO L130 PetriNetUnfolder]: 2/79 cut-off events. [2022-11-02 19:53:32,855 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 19:53:32,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 102 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-11-02 19:53:32,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 80 transitions, 165 flow [2022-11-02 19:53:32,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 79 transitions, 161 flow [2022-11-02 19:53:32,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:53:32,886 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@599ffb9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:53:32,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-11-02 19:53:32,897 INFO L130 PetriNetUnfolder]: 0/25 cut-off events. [2022-11-02 19:53:32,898 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 19:53:32,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:32,899 INFO L208 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] [2022-11-02 19:53:32,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 19:53:32,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:32,907 INFO L85 PathProgramCache]: Analyzing trace with hash 217094491, now seen corresponding path program 1 times [2022-11-02 19:53:32,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:32,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337365891] [2022-11-02 19:53:32,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:32,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:33,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:33,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337365891] [2022-11-02 19:53:33,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337365891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:33,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:33,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 19:53:33,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876516885] [2022-11-02 19:53:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:33,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 19:53:33,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:33,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 19:53:33,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 19:53:33,230 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 80 [2022-11-02 19:53:33,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 161 flow. Second operand has 2 states, 2 states have (on average 58.0) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:33,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:33,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 80 [2022-11-02 19:53:33,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:33,374 INFO L130 PetriNetUnfolder]: 10/119 cut-off events. [2022-11-02 19:53:33,375 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 19:53:33,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 119 events. 10/119 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 243 event pairs, 9 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 122. Up to 26 conditions per place. [2022-11-02 19:53:33,380 INFO L137 encePairwiseOnDemand]: 64/80 looper letters, 7 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2022-11-02 19:53:33,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 143 flow [2022-11-02 19:53:33,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 19:53:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 19:53:33,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 137 transitions. [2022-11-02 19:53:33,421 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.85625 [2022-11-02 19:53:33,428 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 137 transitions. [2022-11-02 19:53:33,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 137 transitions. [2022-11-02 19:53:33,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:33,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 137 transitions. [2022-11-02 19:53:33,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:33,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:33,449 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:33,452 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 161 flow. Second operand 2 states and 137 transitions. [2022-11-02 19:53:33,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 143 flow [2022-11-02 19:53:33,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 19:53:33,470 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 128 flow [2022-11-02 19:53:33,472 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=128, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2022-11-02 19:53:33,477 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, -15 predicate places. [2022-11-02 19:53:33,478 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 128 flow [2022-11-02 19:53:33,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 58.0) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:33,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:33,479 INFO L208 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] [2022-11-02 19:53:33,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:53:33,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 19:53:33,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:33,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2031990498, now seen corresponding path program 1 times [2022-11-02 19:53:33,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:33,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045868830] [2022-11-02 19:53:33,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:33,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:33,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:33,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045868830] [2022-11-02 19:53:33,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045868830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:33,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:33,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:53:33,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405601452] [2022-11-02 19:53:33,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:33,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:53:33,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:33,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:53:33,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:53:33,646 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 80 [2022-11-02 19:53:33,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:33,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:33,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 80 [2022-11-02 19:53:33,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:33,852 INFO L130 PetriNetUnfolder]: 68/276 cut-off events. [2022-11-02 19:53:33,853 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 19:53:33,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 276 events. 68/276 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1111 event pairs, 35 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 419. Up to 112 conditions per place. [2022-11-02 19:53:33,856 INFO L137 encePairwiseOnDemand]: 75/80 looper letters, 16 selfloop transitions, 4 changer transitions 3/71 dead transitions. [2022-11-02 19:53:33,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 71 transitions, 190 flow [2022-11-02 19:53:33,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:53:33,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 19:53:33,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2022-11-02 19:53:33,859 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7125 [2022-11-02 19:53:33,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 171 transitions. [2022-11-02 19:53:33,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 171 transitions. [2022-11-02 19:53:33,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:33,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 171 transitions. [2022-11-02 19:53:33,862 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) [2022-11-02 19:53:33,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:33,864 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:33,864 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 128 flow. Second operand 3 states and 171 transitions. [2022-11-02 19:53:33,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 71 transitions, 190 flow [2022-11-02 19:53:33,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 19:53:33,867 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 158 flow [2022-11-02 19:53:33,867 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2022-11-02 19:53:33,868 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, -11 predicate places. [2022-11-02 19:53:33,869 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 158 flow [2022-11-02 19:53:33,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:33,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:33,869 INFO L208 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] [2022-11-02 19:53:33,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:53:33,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 19:53:33,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:33,871 INFO L85 PathProgramCache]: Analyzing trace with hash 929981608, now seen corresponding path program 1 times [2022-11-02 19:53:33,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:33,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055184790] [2022-11-02 19:53:33,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:33,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:33,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:33,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055184790] [2022-11-02 19:53:33,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055184790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:33,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:33,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:53:33,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699682239] [2022-11-02 19:53:33,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:33,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:53:33,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:33,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:53:33,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:53:33,950 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2022-11-02 19:53:33,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:33,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:33,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2022-11-02 19:53:33,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:34,035 INFO L130 PetriNetUnfolder]: 29/215 cut-off events. [2022-11-02 19:53:34,035 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 19:53:34,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 215 events. 29/215 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 862 event pairs, 2 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 306. Up to 38 conditions per place. [2022-11-02 19:53:34,038 INFO L137 encePairwiseOnDemand]: 76/80 looper letters, 11 selfloop transitions, 3 changer transitions 3/73 dead transitions. [2022-11-02 19:53:34,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 206 flow [2022-11-02 19:53:34,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:53:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 19:53:34,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2022-11-02 19:53:34,041 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-11-02 19:53:34,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 180 transitions. [2022-11-02 19:53:34,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 180 transitions. [2022-11-02 19:53:34,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:34,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 180 transitions. [2022-11-02 19:53:34,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:34,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:34,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:34,045 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 158 flow. Second operand 3 states and 180 transitions. [2022-11-02 19:53:34,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 206 flow [2022-11-02 19:53:34,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 19:53:34,049 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 172 flow [2022-11-02 19:53:34,049 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2022-11-02 19:53:34,050 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2022-11-02 19:53:34,050 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 172 flow [2022-11-02 19:53:34,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:34,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:34,051 INFO L208 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] [2022-11-02 19:53:34,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 19:53:34,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 19:53:34,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:34,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1751531285, now seen corresponding path program 1 times [2022-11-02 19:53:34,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:34,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523068926] [2022-11-02 19:53:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:34,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:34,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:34,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523068926] [2022-11-02 19:53:34,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523068926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:34,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:34,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:53:34,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417633976] [2022-11-02 19:53:34,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:34,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:53:34,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:34,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:53:34,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:53:34,153 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 80 [2022-11-02 19:53:34,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 172 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) [2022-11-02 19:53:34,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:53:34,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 80 [2022-11-02 19:53:34,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:53:34,260 INFO L130 PetriNetUnfolder]: 74/347 cut-off events. [2022-11-02 19:53:34,260 INFO L131 PetriNetUnfolder]: For 76/93 co-relation queries the response was YES. [2022-11-02 19:53:34,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 347 events. 74/347 cut-off events. For 76/93 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1689 event pairs, 11 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 610. Up to 111 conditions per place. [2022-11-02 19:53:34,263 INFO L137 encePairwiseOnDemand]: 76/80 looper letters, 15 selfloop transitions, 4 changer transitions 10/79 dead transitions. [2022-11-02 19:53:34,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 79 transitions, 260 flow [2022-11-02 19:53:34,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:53:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 19:53:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2022-11-02 19:53:34,266 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7375 [2022-11-02 19:53:34,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2022-11-02 19:53:34,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2022-11-02 19:53:34,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:53:34,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2022-11-02 19:53:34,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:34,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:34,270 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:34,270 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 172 flow. Second operand 3 states and 177 transitions. [2022-11-02 19:53:34,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 79 transitions, 260 flow [2022-11-02 19:53:34,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 19:53:34,275 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 190 flow [2022-11-02 19:53:34,275 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2022-11-02 19:53:34,276 INFO L287 CegarLoopForPetriNet]: 81 programPoint places, -7 predicate places. [2022-11-02 19:53:34,277 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 190 flow [2022-11-02 19:53:34,277 INFO L496 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) [2022-11-02 19:53:34,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:53:34,277 INFO L208 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] [2022-11-02 19:53:34,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 19:53:34,278 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 19:53:34,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:34,279 INFO L85 PathProgramCache]: Analyzing trace with hash 349093325, now seen corresponding path program 1 times [2022-11-02 19:53:34,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:34,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933340951] [2022-11-02 19:53:34,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:34,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:53:34,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 19:53:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:53:34,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 19:53:34,427 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 19:53:34,429 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (27 of 28 remaining) [2022-11-02 19:53:34,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 28 remaining) [2022-11-02 19:53:34,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 28 remaining) [2022-11-02 19:53:34,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (24 of 28 remaining) [2022-11-02 19:53:34,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 28 remaining) [2022-11-02 19:53:34,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (22 of 28 remaining) [2022-11-02 19:53:34,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 28 remaining) [2022-11-02 19:53:34,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 28 remaining) [2022-11-02 19:53:34,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (19 of 28 remaining) [2022-11-02 19:53:34,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (18 of 28 remaining) [2022-11-02 19:53:34,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 28 remaining) [2022-11-02 19:53:34,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 28 remaining) [2022-11-02 19:53:34,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 28 remaining) [2022-11-02 19:53:34,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 28 remaining) [2022-11-02 19:53:34,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 28 remaining) [2022-11-02 19:53:34,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 28 remaining) [2022-11-02 19:53:34,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (11 of 28 remaining) [2022-11-02 19:53:34,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (10 of 28 remaining) [2022-11-02 19:53:34,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 28 remaining) [2022-11-02 19:53:34,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 28 remaining) [2022-11-02 19:53:34,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 28 remaining) [2022-11-02 19:53:34,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 28 remaining) [2022-11-02 19:53:34,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 28 remaining) [2022-11-02 19:53:34,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 28 remaining) [2022-11-02 19:53:34,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 28 remaining) [2022-11-02 19:53:34,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 28 remaining) [2022-11-02 19:53:34,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 28 remaining) [2022-11-02 19:53:34,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (0 of 28 remaining) [2022-11-02 19:53:34,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 19:53:34,465 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 19:53:34,474 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 19:53:34,474 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 19:53:34,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 07:53:34 BasicIcfg [2022-11-02 19:53:34,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 19:53:34,523 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 19:53:34,523 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 19:53:34,523 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 19:53:34,524 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:53:32" (3/4) ... [2022-11-02 19:53:34,527 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 19:53:34,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 19:53:34,530 INFO L158 Benchmark]: Toolchain (without parser) took 3937.49ms. Allocated memory is still 146.8MB. Free memory was 111.6MB in the beginning and 115.4MB in the end (delta: -3.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:53:34,531 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory is still 44.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:53:34,535 INFO L158 Benchmark]: CACSL2BoogieTranslator took 774.66ms. Allocated memory is still 146.8MB. Free memory was 111.3MB in the beginning and 111.3MB in the end (delta: -5.3kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 19:53:34,538 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.56ms. Allocated memory is still 146.8MB. Free memory was 111.3MB in the beginning and 109.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 19:53:34,538 INFO L158 Benchmark]: Boogie Preprocessor took 78.58ms. Allocated memory is still 146.8MB. Free memory was 109.3MB in the beginning and 108.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 19:53:34,541 INFO L158 Benchmark]: RCFGBuilder took 1089.57ms. Allocated memory is still 146.8MB. Free memory was 107.3MB in the beginning and 78.7MB in the end (delta: 28.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-02 19:53:34,542 INFO L158 Benchmark]: TraceAbstraction took 1882.75ms. Allocated memory is still 146.8MB. Free memory was 77.9MB in the beginning and 115.4MB in the end (delta: -37.5MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2022-11-02 19:53:34,542 INFO L158 Benchmark]: Witness Printer took 4.52ms. Allocated memory is still 146.8MB. Free memory is still 115.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:53:34,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory is still 44.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 774.66ms. Allocated memory is still 146.8MB. Free memory was 111.3MB in the beginning and 111.3MB in the end (delta: -5.3kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.56ms. Allocated memory is still 146.8MB. Free memory was 111.3MB in the beginning and 109.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.58ms. Allocated memory is still 146.8MB. Free memory was 109.3MB in the beginning and 108.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1089.57ms. Allocated memory is still 146.8MB. Free memory was 107.3MB in the beginning and 78.7MB in the end (delta: 28.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1882.75ms. Allocated memory is still 146.8MB. Free memory was 77.9MB in the beginning and 115.4MB in the end (delta: -37.5MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Witness Printer took 4.52ms. Allocated memory is still 146.8MB. Free memory is still 115.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 724]: Data race detected Data race detected The following path leads to a data race: [L688] 0 int mThread=0; VAL [mThread=0] [L689] 0 int start_main=0; VAL [mThread=0, start_main=0] [L690] 0 int mStartLock=0; VAL [mStartLock=0, mThread=0, start_main=0] [L691] 0 int __COUNT__ =0; VAL [__COUNT__=0, mStartLock=0, mThread=0, start_main=0] [L733] 0 pthread_t t; VAL [__COUNT__=0, mStartLock=0, mThread=0, start_main=0, t={3:0}] [L734] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [__COUNT__=0, mStartLock=0, mThread=0, pthread_create(&t, 0, thr1, 0)=-1, start_main=0, t={3:0}] [L735] CALL 0 thr2(0) [L724] 0 int self = mThread; VAL [__COUNT__=0, arg={0:0}, arg={0:0}, mStartLock=0, mThread=0, start_main=0] [L710] 1 int PR_CreateThread__RES = 1; VAL [__COUNT__=0, arg={0:0}, arg={0:0}, mStartLock=0, mThread=0, PR_CreateThread__RES=1, start_main=0] [L711] CALL 1 __VERIFIER_atomic_acquire() [L694] EXPR 1 mStartLock==0 [L694] CALL 1 assume_abort_if_not(mStartLock==0) [L3] COND FALSE 1 !(!cond) [L694] RET 1 assume_abort_if_not(mStartLock==0) [L695] 1 mStartLock = 1 [L711] RET 1 __VERIFIER_atomic_acquire() [L712] 1 start_main=1 VAL [__COUNT__=0, arg={0:0}, arg={0:0}, mStartLock=1, mThread=0, PR_CreateThread__RES=1, start_main=1] [L713] CALL 1 __VERIFIER_atomic_thr1(PR_CreateThread__RES) [L704] 1 __COUNT__ == 0 [L704] COND TRUE 1 __COUNT__ == 0 [L705] 1 mThread = PR_CreateThread__RES [L706] EXPR 1 __COUNT__ + 1 [L706] 1 __COUNT__ = __COUNT__ + 1 [L713] RET 1 __VERIFIER_atomic_thr1(PR_CreateThread__RES) [L724] 0 int self = mThread; VAL [__COUNT__=1, arg={0:0}, arg={0:0}, mStartLock=1, mThread=1, start_main=1] Now there is a data race on ~mThread~0 between C: mThread = PR_CreateThread__RES [705] and C: int self = mThread; [724] - UnprovableResult [Line: 694]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 705]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 102 locations, 28 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: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 77 IncrementalHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 15 mSDtfsCounter, 77 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=4, InterpolantAutomatonStates: 11, 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, 0.3s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 19:53:34,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97f2e16e-37af-4b91-8372-c51c0a30c7be/bin/uautomizer-Dbtcem3rbc/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE