./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr-overflow.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d8b66b98fca524b0a343d5dd747c13b18a33bf448a3a25d7d1a1a10b8f7934d --- 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-38b53e6 [2022-11-25 23:25:47,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:25:47,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:25:47,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:25:47,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:25:47,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:25:47,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:25:47,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:25:47,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:25:47,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:25:47,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:25:47,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:25:47,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:25:47,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:25:47,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:25:47,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:25:47,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:25:47,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:25:47,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:25:47,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:25:47,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:25:47,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:25:47,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:25:48,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:25:48,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:25:48,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:25:48,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:25:48,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:25:48,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:25:48,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:25:48,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:25:48,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:25:48,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:25:48,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:25:48,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:25:48,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:25:48,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:25:48,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:25:48,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:25:48,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:25:48,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:25:48,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 23:25:48,067 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:25:48,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:25:48,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:25:48,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:25:48,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:25:48,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:25:48,070 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:25:48,071 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:25:48,071 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:25:48,071 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:25:48,072 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:25:48,073 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:25:48,073 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:25:48,073 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:25:48,074 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:25:48,074 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:25:48,074 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:25:48,074 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:25:48,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:25:48,076 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:25:48,076 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:25:48,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:25:48,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:25:48,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:25:48,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:25:48,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:25:48,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:25:48,078 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:25:48,079 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:25:48,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:25:48,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:25:48,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:25:48,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:25:48,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:25:48,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:25:48,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:25:48,081 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:25:48,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:25:48,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:25:48,082 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:25:48,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:25:48,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:25:48,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:25:48,083 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_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8b66b98fca524b0a343d5dd747c13b18a33bf448a3a25d7d1a1a10b8f7934d [2022-11-25 23:25:48,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:25:48,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:25:48,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:25:48,510 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:25:48,510 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:25:48,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr-overflow.i [2022-11-25 23:25:51,872 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:25:52,362 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:25:52,363 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr-overflow.i [2022-11-25 23:25:52,406 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/data/468ab2de2/4f03d40ef27c48cab2470625ad430a27/FLAGa10ced4c5 [2022-11-25 23:25:52,430 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/data/468ab2de2/4f03d40ef27c48cab2470625ad430a27 [2022-11-25 23:25:52,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:25:52,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:25:52,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:25:52,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:25:52,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:25:52,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:25:52" (1/1) ... [2022-11-25 23:25:52,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2426ea49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:52, skipping insertion in model container [2022-11-25 23:25:52,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:25:52" (1/1) ... [2022-11-25 23:25:52,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:25:52,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:25:53,543 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:25:53,548 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,550 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,563 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,565 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,565 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-11-25 23:25:53,571 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:25:53,573 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-11-25 23:25:53,576 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,579 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,583 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,586 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,591 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:25:53,597 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,598 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,599 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,601 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,602 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,603 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,607 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,612 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:25:53,631 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:25:53,694 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:25:53,703 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,711 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,713 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,715 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,715 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-11-25 23:25:53,717 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:25:53,718 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-11-25 23:25:53,719 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,720 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,721 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,722 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,726 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:25:53,727 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,729 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,730 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,731 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,733 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,734 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,735 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:25:53,736 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-11-25 23:25:53,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:25:53,912 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:25:53,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:53 WrapperNode [2022-11-25 23:25:53,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:25:53,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:25:53,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:25:53,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:25:53,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:53" (1/1) ... [2022-11-25 23:25:53,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:53" (1/1) ... [2022-11-25 23:25:54,032 INFO L138 Inliner]: procedures = 524, calls = 59, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 117 [2022-11-25 23:25:54,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:25:54,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:25:54,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:25:54,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:25:54,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:53" (1/1) ... [2022-11-25 23:25:54,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:53" (1/1) ... [2022-11-25 23:25:54,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:53" (1/1) ... [2022-11-25 23:25:54,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:53" (1/1) ... [2022-11-25 23:25:54,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:53" (1/1) ... [2022-11-25 23:25:54,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:53" (1/1) ... [2022-11-25 23:25:54,108 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:53" (1/1) ... [2022-11-25 23:25:54,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:53" (1/1) ... [2022-11-25 23:25:54,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:25:54,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:25:54,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:25:54,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:25:54,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:53" (1/1) ... [2022-11-25 23:25:54,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:25:54,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:25:54,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:25:54,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:25:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2022-11-25 23:25:54,247 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2022-11-25 23:25:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2022-11-25 23:25:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2022-11-25 23:25:54,248 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2022-11-25 23:25:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2022-11-25 23:25:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:25:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:25:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 23:25:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:25:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:25:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:25:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:25:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2022-11-25 23:25:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 23:25:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:25:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:25:54,255 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 23:25:54,670 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:25:54,687 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:25:55,192 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:25:55,204 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:25:55,210 INFO L300 CfgBuilder]: Removed 19 assume(true) statements. [2022-11-25 23:25:55,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:25:55 BoogieIcfgContainer [2022-11-25 23:25:55,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:25:55,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:25:55,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:25:55,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:25:55,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:25:52" (1/3) ... [2022-11-25 23:25:55,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f541d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:25:55, skipping insertion in model container [2022-11-25 23:25:55,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:53" (2/3) ... [2022-11-25 23:25:55,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f541d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:25:55, skipping insertion in model container [2022-11-25 23:25:55,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:25:55" (3/3) ... [2022-11-25 23:25:55,233 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr-overflow.i [2022-11-25 23:25:55,247 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 23:25:55,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:25:55,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-25 23:25:55,264 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 23:25:55,382 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 23:25:55,428 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:25:55,445 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 230 transitions, 476 flow [2022-11-25 23:25:55,449 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 230 transitions, 476 flow [2022-11-25 23:25:55,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 230 transitions, 476 flow [2022-11-25 23:25:55,559 INFO L130 PetriNetUnfolder]: 31/228 cut-off events. [2022-11-25 23:25:55,560 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 23:25:55,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 228 events. 31/228 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 463 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 138. Up to 5 conditions per place. [2022-11-25 23:25:55,577 INFO L119 LiptonReduction]: Number of co-enabled transitions 11614 [2022-11-25 23:26:22,685 INFO L134 LiptonReduction]: Checked pairs total: 11607 [2022-11-25 23:26:22,686 INFO L136 LiptonReduction]: Total number of compositions: 262 [2022-11-25 23:26:22,695 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 55 transitions, 126 flow [2022-11-25 23:26:22,763 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 358 states, 332 states have (on average 4.445783132530121) internal successors, (1476), 357 states have internal predecessors, (1476), 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) [2022-11-25 23:26:22,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:26:22,797 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=FINITE_AUTOMATA, 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;@6ab3ed7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:26:22,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-25 23:26:22,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 332 states have (on average 4.445783132530121) internal successors, (1476), 357 states have internal predecessors, (1476), 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) [2022-11-25 23:26:22,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-25 23:26:22,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:22,809 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-25 23:26:22,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-25 23:26:22,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:22,816 INFO L85 PathProgramCache]: Analyzing trace with hash 988, now seen corresponding path program 1 times [2022-11-25 23:26:22,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:22,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183563464] [2022-11-25 23:26:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:22,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:26:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:26:23,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:26:23,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183563464] [2022-11-25 23:26:23,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183563464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:26:23,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:26:23,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 23:26:23,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005961271] [2022-11-25 23:26:23,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:26:23,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 23:26:23,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:23,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 23:26:23,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:26:23,207 INFO L87 Difference]: Start difference. First operand has 358 states, 332 states have (on average 4.445783132530121) internal successors, (1476), 357 states have internal predecessors, (1476), 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-25 23:26:23,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:23,347 INFO L93 Difference]: Finished difference Result 226 states and 626 transitions. [2022-11-25 23:26:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 23:26:23,350 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) Word has length 1 [2022-11-25 23:26:23,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:23,372 INFO L225 Difference]: With dead ends: 226 [2022-11-25 23:26:23,372 INFO L226 Difference]: Without dead ends: 220 [2022-11-25 23:26:23,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:26:23,379 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:23,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:26:23,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-25 23:26:23,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2022-11-25 23:26:23,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 172 states have (on average 3.558139534883721) internal successors, (612), 219 states have internal predecessors, (612), 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) [2022-11-25 23:26:23,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 612 transitions. [2022-11-25 23:26:23,475 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 612 transitions. Word has length 1 [2022-11-25 23:26:23,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:23,475 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 612 transitions. [2022-11-25 23:26:23,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-25 23:26:23,476 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 612 transitions. [2022-11-25 23:26:23,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-25 23:26:23,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:23,476 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-25 23:26:23,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:26:23,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-25 23:26:23,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:23,479 INFO L85 PathProgramCache]: Analyzing trace with hash 989, now seen corresponding path program 1 times [2022-11-25 23:26:23,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:23,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563451589] [2022-11-25 23:26:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:23,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:26:23,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:26:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:26:23,700 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:26:23,701 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:26:23,703 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2022-11-25 23:26:23,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2022-11-25 23:26:23,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2022-11-25 23:26:23,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2022-11-25 23:26:23,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2022-11-25 23:26:23,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2022-11-25 23:26:23,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2022-11-25 23:26:23,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2022-11-25 23:26:23,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2022-11-25 23:26:23,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2022-11-25 23:26:23,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2022-11-25 23:26:23,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2022-11-25 23:26:23,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2022-11-25 23:26:23,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2022-11-25 23:26:23,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2022-11-25 23:26:23,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2022-11-25 23:26:23,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2022-11-25 23:26:23,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2022-11-25 23:26:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2022-11-25 23:26:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2022-11-25 23:26:23,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:26:23,715 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 23:26:23,722 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 23:26:23,722 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:26:23,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:26:23 BasicIcfg [2022-11-25 23:26:23,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:26:23,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:26:23,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:26:23,745 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:26:23,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:25:55" (3/4) ... [2022-11-25 23:26:23,748 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 23:26:23,789 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:26:23,789 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:26:23,790 INFO L158 Benchmark]: Toolchain (without parser) took 31351.99ms. Allocated memory was 195.0MB in the beginning and 237.0MB in the end (delta: 41.9MB). Free memory was 153.8MB in the beginning and 158.9MB in the end (delta: -5.1MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2022-11-25 23:26:23,791 INFO L158 Benchmark]: CDTParser took 1.34ms. Allocated memory is still 130.0MB. Free memory was 97.4MB in the beginning and 97.3MB in the end (delta: 71.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:26:23,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1469.02ms. Allocated memory is still 195.0MB. Free memory was 153.8MB in the beginning and 88.8MB in the end (delta: 65.0MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2022-11-25 23:26:23,792 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.83ms. Allocated memory is still 195.0MB. Free memory was 88.3MB in the beginning and 85.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 23:26:23,793 INFO L158 Benchmark]: Boogie Preprocessor took 84.19ms. Allocated memory is still 195.0MB. Free memory was 85.1MB in the beginning and 82.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:26:23,793 INFO L158 Benchmark]: RCFGBuilder took 1097.31ms. Allocated memory is still 195.0MB. Free memory was 82.0MB in the beginning and 160.1MB in the end (delta: -78.0MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2022-11-25 23:26:23,794 INFO L158 Benchmark]: TraceAbstraction took 28524.73ms. Allocated memory was 195.0MB in the beginning and 237.0MB in the end (delta: 41.9MB). Free memory was 159.1MB in the beginning and 160.0MB in the end (delta: -893.8kB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2022-11-25 23:26:23,794 INFO L158 Benchmark]: Witness Printer took 45.18ms. Allocated memory is still 237.0MB. Free memory was 160.0MB in the beginning and 158.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:26:23,797 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34ms. Allocated memory is still 130.0MB. Free memory was 97.4MB in the beginning and 97.3MB in the end (delta: 71.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1469.02ms. Allocated memory is still 195.0MB. Free memory was 153.8MB in the beginning and 88.8MB in the end (delta: 65.0MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 117.83ms. Allocated memory is still 195.0MB. Free memory was 88.3MB in the beginning and 85.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.19ms. Allocated memory is still 195.0MB. Free memory was 85.1MB in the beginning and 82.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1097.31ms. Allocated memory is still 195.0MB. Free memory was 82.0MB in the beginning and 160.1MB in the end (delta: -78.0MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. * TraceAbstraction took 28524.73ms. Allocated memory was 195.0MB in the beginning and 237.0MB in the end (delta: 41.9MB). Free memory was 159.1MB in the beginning and 160.0MB in the end (delta: -893.8kB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. * Witness Printer took 45.18ms. Allocated memory is still 237.0MB. Free memory was 160.0MB in the beginning and 158.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.2s, 206 PlacesBefore, 42 PlacesAfterwards, 230 TransitionsBefore, 55 TransitionsAfterwards, 11614 CoEnabledTransitionPairs, 8 FixpointIterations, 72 TrivialSequentialCompositions, 138 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 29 ConcurrentYvCompositions, 11 ChoiceCompositions, 262 TotalNumberOfCompositions, 11607 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10947, independent: 10925, independent conditional: 0, independent unconditional: 10925, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7983, independent: 7968, independent conditional: 0, independent unconditional: 7968, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7983, independent: 7952, independent conditional: 0, independent unconditional: 7952, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, independent: 16, independent conditional: 0, independent unconditional: 16, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 156, independent: 68, independent conditional: 0, independent unconditional: 68, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 10947, independent: 2957, independent conditional: 0, independent unconditional: 2957, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 7983, unknown conditional: 0, unknown unconditional: 7983] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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 - CounterExampleResult [Line: 1839]: integer overflow possible integer overflow possible We found a FailurePath: [L1797] pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1798] long counter; [L1799] time_t end_time; [L1836] int status; [L1837] pthread_t counter_thread_id; [L1838] pthread_t monitor_thread_id; [L1839] time (((void *)0)) + 60 VAL [\old(argc)=2147483589, argc=2147483589, argv={2147483590:2147483591}, argv={2147483590:2147483591}, counter=0, counter_thread_id={26:0}, end_time=0, monitor_thread_id={27:0}, mutex={25:0}, time (((void *)0))=2147483588] - UnprovableResult [Line: 1830]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1825]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1830]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1825]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1808]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1808]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1807]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1807]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1839]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1840]: 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. - UnprovableResult [Line: 1843]: 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 5 procedures, 292 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 28.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 27.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27 IncrementalHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 27 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 proved your program to be incorrect! [2022-11-25 23:26:23,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d59fb8-d7f3-4c7e-82b9-92f66862b2f1/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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(OVERFLOW)