./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stateful01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_0d7dd73a-0591-4921-85f7-c4584a7262c3/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/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_0d7dd73a-0591-4921-85f7-c4584a7262c3/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stateful01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 --- 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 [2022-11-26 01:12:14,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:12:14,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:12:15,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:12:15,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:12:15,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:12:15,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:12:15,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:12:15,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:12:15,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:12:15,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:12:15,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:12:15,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:12:15,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:12:15,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:12:15,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:12:15,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:12:15,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:12:15,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:12:15,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:12:15,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:12:15,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:12:15,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:12:15,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:12:15,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:12:15,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:12:15,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:12:15,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:12:15,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:12:15,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:12:15,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:12:15,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:12:15,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:12:15,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:12:15,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:12:15,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:12:15,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:12:15,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:12:15,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:12:15,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:12:15,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:12:15,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 01:12:15,148 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:12:15,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:12:15,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:12:15,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:12:15,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:12:15,150 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:12:15,151 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:12:15,151 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:12:15,151 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:12:15,151 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:12:15,152 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:12:15,153 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:12:15,153 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:12:15,153 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:12:15,153 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:12:15,154 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:12:15,154 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:12:15,154 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:12:15,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:12:15,155 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:12:15,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:12:15,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:12:15,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:12:15,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:12:15,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:12:15,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:12:15,157 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:12:15,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:12:15,157 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:12:15,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:12:15,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:12:15,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:12:15,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:12:15,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:12:15,159 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:12:15,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:12:15,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:12:15,160 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:12:15,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:12:15,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:12:15,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:12:15,161 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_0d7dd73a-0591-4921-85f7-c4584a7262c3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 [2022-11-26 01:12:15,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:12:15,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:12:15,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:12:15,522 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:12:15,522 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:12:15,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/pthread/stateful01-1.i [2022-11-26 01:12:18,678 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:12:19,001 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:12:19,006 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/sv-benchmarks/c/pthread/stateful01-1.i [2022-11-26 01:12:19,025 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/bin/utaipan-ByfvJB40ur/data/c895fa89a/ddfcf00af15d48dc9712f0f950d71b29/FLAG4f4f1483e [2022-11-26 01:12:19,044 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/bin/utaipan-ByfvJB40ur/data/c895fa89a/ddfcf00af15d48dc9712f0f950d71b29 [2022-11-26 01:12:19,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:12:19,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:12:19,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:12:19,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:12:19,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:12:19,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:12:19" (1/1) ... [2022-11-26 01:12:19,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f05db9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:12:19, skipping insertion in model container [2022-11-26 01:12:19,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:12:19" (1/1) ... [2022-11-26 01:12:19,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:12:19,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:12:19,587 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-11-26 01:12:19,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:12:19,607 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:12:19,670 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-11-26 01:12:19,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:12:19,716 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:12:19,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:12:19 WrapperNode [2022-11-26 01:12:19,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:12:19,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:12:19,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:12:19,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:12:19,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:12:19" (1/1) ... [2022-11-26 01:12:19,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:12:19" (1/1) ... [2022-11-26 01:12:19,770 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-11-26 01:12:19,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:12:19,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:12:19,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:12:19,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:12:19,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:12:19" (1/1) ... [2022-11-26 01:12:19,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:12:19" (1/1) ... [2022-11-26 01:12:19,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:12:19" (1/1) ... [2022-11-26 01:12:19,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:12:19" (1/1) ... [2022-11-26 01:12:19,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:12:19" (1/1) ... [2022-11-26 01:12:19,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:12:19" (1/1) ... [2022-11-26 01:12:19,803 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:12:19" (1/1) ... [2022-11-26 01:12:19,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:12:19" (1/1) ... [2022-11-26 01:12:19,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:12:19,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:12:19,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:12:19,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:12:19,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:12:19" (1/1) ... [2022-11-26 01:12:19,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:12:19,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:12:19,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:12:19,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:12:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 01:12:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-26 01:12:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-26 01:12:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-26 01:12:19,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-26 01:12:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 01:12:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-26 01:12:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:12:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:12:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:12:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:12:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:12:19,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:12:19,909 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 01:12:20,076 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:12:20,079 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:12:20,340 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:12:20,376 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:12:20,376 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 01:12:20,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:12:20 BoogieIcfgContainer [2022-11-26 01:12:20,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:12:20,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:12:20,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:12:20,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:12:20,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:12:19" (1/3) ... [2022-11-26 01:12:20,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a64afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:12:20, skipping insertion in model container [2022-11-26 01:12:20,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:12:19" (2/3) ... [2022-11-26 01:12:20,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a64afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:12:20, skipping insertion in model container [2022-11-26 01:12:20,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:12:20" (3/3) ... [2022-11-26 01:12:20,409 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2022-11-26 01:12:20,420 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-26 01:12:20,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:12:20,452 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 01:12:20,452 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 01:12:20,534 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-26 01:12:20,588 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 01:12:20,614 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 93 transitions, 202 flow [2022-11-26 01:12:20,624 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 93 transitions, 202 flow [2022-11-26 01:12:20,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 93 transitions, 202 flow [2022-11-26 01:12:20,715 INFO L130 PetriNetUnfolder]: 1/91 cut-off events. [2022-11-26 01:12:20,715 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-26 01:12:20,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 91 events. 1/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2022-11-26 01:12:20,724 INFO L119 LiptonReduction]: Number of co-enabled transitions 732 [2022-11-26 01:12:25,191 INFO L134 LiptonReduction]: Checked pairs total: 2358 [2022-11-26 01:12:25,191 INFO L136 LiptonReduction]: Total number of compositions: 73 [2022-11-26 01:12:25,199 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 68 flow [2022-11-26 01:12:25,227 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 162 states, 161 states have (on average 2.1552795031055902) internal successors, (347), 161 states have internal predecessors, (347), 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) [2022-11-26 01:12:25,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:12:25,251 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;@68db43eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:12:25,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-26 01:12:25,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 161 states have (on average 2.1552795031055902) internal successors, (347), 161 states have internal predecessors, (347), 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) [2022-11-26 01:12:25,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-26 01:12:25,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:12:25,264 INFO L195 NwaCegarLoop]: 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] [2022-11-26 01:12:25,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-26 01:12:25,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:12:25,270 INFO L85 PathProgramCache]: Analyzing trace with hash -905356708, now seen corresponding path program 1 times [2022-11-26 01:12:25,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:12:25,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858207680] [2022-11-26 01:12:25,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:12:25,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:12:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:12:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:12:25,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:12:25,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858207680] [2022-11-26 01:12:25,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858207680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:12:25,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:12:25,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:12:25,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094935241] [2022-11-26 01:12:25,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:12:25,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:12:25,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:12:25,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:12:25,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:12:25,827 INFO L87 Difference]: Start difference. First operand has 162 states, 161 states have (on average 2.1552795031055902) internal successors, (347), 161 states have internal predecessors, (347), 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 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-11-26 01:12:25,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:12:25,927 INFO L93 Difference]: Finished difference Result 114 states and 187 transitions. [2022-11-26 01:12:25,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:12:25,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2022-11-26 01:12:25,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:12:25,943 INFO L225 Difference]: With dead ends: 114 [2022-11-26 01:12:25,944 INFO L226 Difference]: Without dead ends: 114 [2022-11-26 01:12:25,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:12:25,950 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:12:25,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:12:25,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-26 01:12:26,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-11-26 01:12:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.654867256637168) internal successors, (187), 113 states have internal predecessors, (187), 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) [2022-11-26 01:12:26,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 187 transitions. [2022-11-26 01:12:26,012 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 187 transitions. Word has length 23 [2022-11-26 01:12:26,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:12:26,013 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 187 transitions. [2022-11-26 01:12:26,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-11-26 01:12:26,014 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 187 transitions. [2022-11-26 01:12:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-26 01:12:26,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:12:26,022 INFO L195 NwaCegarLoop]: 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] [2022-11-26 01:12:26,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:12:26,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-26 01:12:26,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:12:26,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2062419996, now seen corresponding path program 2 times [2022-11-26 01:12:26,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:12:26,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368515173] [2022-11-26 01:12:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:12:26,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:12:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:12:26,088 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:12:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:12:26,142 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 01:12:26,142 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:12:26,144 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-26 01:12:26,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-26 01:12:26,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-26 01:12:26,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 01:12:26,150 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2022-11-26 01:12:26,155 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-26 01:12:26,156 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 01:12:26,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 01:12:26 BasicIcfg [2022-11-26 01:12:26,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 01:12:26,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 01:12:26,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 01:12:26,196 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 01:12:26,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:12:20" (3/4) ... [2022-11-26 01:12:26,198 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-26 01:12:26,250 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 01:12:26,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 01:12:26,252 INFO L158 Benchmark]: Toolchain (without parser) took 7202.36ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 99.8MB in the beginning and 107.4MB in the end (delta: -7.7MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2022-11-26 01:12:26,252 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 144.7MB. Free memory was 90.1MB in the beginning and 90.0MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:12:26,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 663.84ms. Allocated memory is still 144.7MB. Free memory was 99.2MB in the beginning and 79.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-26 01:12:26,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.98ms. Allocated memory is still 144.7MB. Free memory was 79.9MB in the beginning and 77.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 01:12:26,254 INFO L158 Benchmark]: Boogie Preprocessor took 35.53ms. Allocated memory is still 144.7MB. Free memory was 77.7MB in the beginning and 76.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 01:12:26,254 INFO L158 Benchmark]: RCFGBuilder took 573.60ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 76.2MB in the beginning and 146.5MB in the end (delta: -70.3MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2022-11-26 01:12:26,255 INFO L158 Benchmark]: TraceAbstraction took 5808.42ms. Allocated memory is still 176.2MB. Free memory was 145.8MB in the beginning and 112.7MB in the end (delta: 33.1MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2022-11-26 01:12:26,255 INFO L158 Benchmark]: Witness Printer took 55.65ms. Allocated memory is still 176.2MB. Free memory was 112.7MB in the beginning and 107.4MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-26 01:12:26,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 144.7MB. Free memory was 90.1MB in the beginning and 90.0MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 663.84ms. Allocated memory is still 144.7MB. Free memory was 99.2MB in the beginning and 79.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.98ms. Allocated memory is still 144.7MB. Free memory was 79.9MB in the beginning and 77.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.53ms. Allocated memory is still 144.7MB. Free memory was 77.7MB in the beginning and 76.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 573.60ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 76.2MB in the beginning and 146.5MB in the end (delta: -70.3MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5808.42ms. Allocated memory is still 176.2MB. Free memory was 145.8MB in the beginning and 112.7MB in the end (delta: 33.1MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. * Witness Printer took 55.65ms. Allocated memory is still 176.2MB. Free memory was 112.7MB in the beginning and 107.4MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 99 PlacesBefore, 33 PlacesAfterwards, 93 TransitionsBefore, 26 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 48 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 73 TotalNumberOfCompositions, 2358 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1409, independent: 1250, independent conditional: 0, independent unconditional: 1250, dependent: 159, dependent conditional: 0, dependent unconditional: 159, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 500, independent: 470, independent conditional: 0, independent unconditional: 470, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 500, independent: 456, independent conditional: 0, independent unconditional: 456, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 125, independent: 35, independent conditional: 0, independent unconditional: 35, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1409, independent: 780, independent conditional: 0, independent unconditional: 780, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 500, unknown conditional: 0, unknown unconditional: 500] , Statistics on independence cache: Total cache size (in pairs): 123, Positive cache size: 104, Positive conditional cache size: 0, Positive unconditional cache size: 104, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, 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: 727]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={6:0}, t2={5:0}] [L697] 1 data1++ VAL [arg={0:0}, arg={0:0}, data1=11, data1++=10, data2=10, ma={3:0}, mb={4:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data1++=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=-1, t1={6:0}, t2={5:0}] [L723] 0 \read(t1) VAL [\read(t1)=-2, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data1++=10, data2=10, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L700] 1 data2++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-2, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, pthread_mutex_lock(&ma)=0, t1={6:0}, t2={5:0}] [L724] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, pthread_mutex_lock(&ma)=0, t1={6:0}, t2={5:0}] [L707] 2 data1+=5 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}] [L710] 2 data2-=6 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L725] COND TRUE 0 data1==16 && data2==5 [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] - UnprovableResult [Line: 721]: 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: 722]: 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, 123 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 4 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 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! [2022-11-26 01:12:26,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7dd73a-0591-4921-85f7-c4584a7262c3/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