./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-1_2-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-1_2-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba --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 fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f --- 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-b5237d8 [2022-11-22 02:07:18,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:07:18,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:07:18,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:07:18,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:07:19,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:07:19,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:07:19,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:07:19,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:07:19,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:07:19,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:07:19,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:07:19,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:07:19,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:07:19,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:07:19,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:07:19,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:07:19,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:07:19,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:07:19,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:07:19,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:07:19,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:07:19,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:07:19,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:07:19,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:07:19,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:07:19,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:07:19,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:07:19,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:07:19,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:07:19,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:07:19,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:07:19,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:07:19,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:07:19,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:07:19,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:07:19,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:07:19,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:07:19,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:07:19,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:07:19,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:07:19,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:07:19,101 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:07:19,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:07:19,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:07:19,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:07:19,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:07:19,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:07:19,103 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:07:19,104 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:07:19,104 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:07:19,104 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:07:19,113 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:07:19,113 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:07:19,114 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:07:19,114 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:07:19,114 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:07:19,115 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:07:19,115 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:07:19,115 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:07:19,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:07:19,116 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:07:19,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:07:19,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:07:19,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:07:19,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:07:19,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:07:19,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:07:19,118 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:07:19,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:07:19,119 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:07:19,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:07:19,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:07:19,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:07:19,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:07:19,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:07:19,121 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:07:19,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:07:19,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:07:19,121 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:07:19,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:07:19,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:07:19,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:07:19,122 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_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f [2022-11-22 02:07:19,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:07:19,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:07:19,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:07:19,394 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:07:19,395 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:07:19,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-11-22 02:07:22,383 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:07:22,759 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:07:22,760 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-11-22 02:07:22,783 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/data/b1fb8a6d3/6400c376b5254d3abaab05beeeb52ce4/FLAG0abb2e975 [2022-11-22 02:07:22,806 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/data/b1fb8a6d3/6400c376b5254d3abaab05beeeb52ce4 [2022-11-22 02:07:22,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:07:22,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:07:22,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:07:22,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:07:22,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:07:22,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:07:22" (1/1) ... [2022-11-22 02:07:22,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ffed5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:22, skipping insertion in model container [2022-11-22 02:07:22,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:07:22" (1/1) ... [2022-11-22 02:07:22,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:07:22,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:07:23,850 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_33c72668-751e-4007-9699-dc85236efb4e/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2022-11-22 02:07:23,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:07:23,910 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:07:23,984 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_33c72668-751e-4007-9699-dc85236efb4e/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2022-11-22 02:07:24,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:07:24,104 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:07:24,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:24 WrapperNode [2022-11-22 02:07:24,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:07:24,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:07:24,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:07:24,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:07:24,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:24" (1/1) ... [2022-11-22 02:07:24,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:24" (1/1) ... [2022-11-22 02:07:24,180 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2022-11-22 02:07:24,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:07:24,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:07:24,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:07:24,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:07:24,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:24" (1/1) ... [2022-11-22 02:07:24,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:24" (1/1) ... [2022-11-22 02:07:24,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:24" (1/1) ... [2022-11-22 02:07:24,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:24" (1/1) ... [2022-11-22 02:07:24,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:24" (1/1) ... [2022-11-22 02:07:24,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:24" (1/1) ... [2022-11-22 02:07:24,212 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:24" (1/1) ... [2022-11-22 02:07:24,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:24" (1/1) ... [2022-11-22 02:07:24,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:07:24,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:07:24,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:07:24,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:07:24,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:24" (1/1) ... [2022-11-22 02:07:24,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:07:24,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:07:24,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:07:24,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:07:24,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-22 02:07:24,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:07:24,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-22 02:07:24,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:07:24,315 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 02:07:24,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:07:24,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:07:24,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:07:24,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:07:24,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:07:24,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-22 02:07:24,316 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-22 02:07:24,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:07:24,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:07:24,317 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 02:07:24,730 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:07:24,732 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:07:24,912 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:07:24,942 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:07:24,942 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 02:07:24,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:07:24 BoogieIcfgContainer [2022-11-22 02:07:24,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:07:24,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:07:24,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:07:24,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:07:24,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:07:22" (1/3) ... [2022-11-22 02:07:24,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fb8a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:07:24, skipping insertion in model container [2022-11-22 02:07:24,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:24" (2/3) ... [2022-11-22 02:07:24,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fb8a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:07:24, skipping insertion in model container [2022-11-22 02:07:24,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:07:24" (3/3) ... [2022-11-22 02:07:24,955 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2022-11-22 02:07:24,965 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 02:07:24,977 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:07:24,977 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-22 02:07:24,977 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 02:07:25,037 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-22 02:07:25,077 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 02:07:25,093 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 106 transitions, 220 flow [2022-11-22 02:07:25,096 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 106 transitions, 220 flow [2022-11-22 02:07:25,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 106 transitions, 220 flow [2022-11-22 02:07:25,155 INFO L130 PetriNetUnfolder]: 4/120 cut-off events. [2022-11-22 02:07:25,155 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-22 02:07:25,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 120 events. 4/120 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 164 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 73. Up to 3 conditions per place. [2022-11-22 02:07:25,161 INFO L119 LiptonReduction]: Number of co-enabled transitions 294 [2022-11-22 02:07:30,072 INFO L134 LiptonReduction]: Checked pairs total: 355 [2022-11-22 02:07:30,072 INFO L136 LiptonReduction]: Total number of compositions: 132 [2022-11-22 02:07:30,084 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2022-11-22 02:07:30,100 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 19 states have internal predecessors, (24), 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) [2022-11-22 02:07:30,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:07:30,145 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;@119edb15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:07:30,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-22 02:07:30,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 19 states have internal predecessors, (24), 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) [2022-11-22 02:07:30,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 02:07:30,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:30,154 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 02:07:30,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-22 02:07:30,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:30,163 INFO L85 PathProgramCache]: Analyzing trace with hash 434, now seen corresponding path program 1 times [2022-11-22 02:07:30,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:07:30,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627438673] [2022-11-22 02:07:30,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:30,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:07:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:07:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:07:30,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:07:30,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627438673] [2022-11-22 02:07:30,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627438673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:07:30,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:07:30,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 02:07:30,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626843303] [2022-11-22 02:07:30,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:07:30,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:07:30,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:07:30,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:07:30,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:07:30,446 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 19 states have internal predecessors, (24), 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) [2022-11-22 02:07:30,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:07:30,496 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2022-11-22 02:07:30,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:07:30,499 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 [2022-11-22 02:07:30,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:07:30,506 INFO L225 Difference]: With dead ends: 17 [2022-11-22 02:07:30,506 INFO L226 Difference]: Without dead ends: 8 [2022-11-22 02:07:30,507 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 [2022-11-22 02:07:30,511 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:07:30,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:07:30,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-22 02:07:30,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-22 02:07:30,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-11-22 02:07:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-11-22 02:07:30,551 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 1 [2022-11-22 02:07:30,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:30,551 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-11-22 02:07:30,552 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) [2022-11-22 02:07:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-11-22 02:07:30,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:07:30,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:30,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:07:30,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:07:30,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-22 02:07:30,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:30,557 INFO L85 PathProgramCache]: Analyzing trace with hash 13170842, now seen corresponding path program 1 times [2022-11-22 02:07:30,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:07:30,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824692229] [2022-11-22 02:07:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:30,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:07:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:07:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:07:30,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:07:30,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824692229] [2022-11-22 02:07:30,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824692229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:07:30,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:07:30,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:07:30,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223230536] [2022-11-22 02:07:30,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:07:30,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:07:30,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:07:30,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:07:30,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:07:30,819 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-22 02:07:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:07:30,834 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2022-11-22 02:07:30,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:07:30,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-22 02:07:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:07:30,836 INFO L225 Difference]: With dead ends: 8 [2022-11-22 02:07:30,836 INFO L226 Difference]: Without dead ends: 6 [2022-11-22 02:07:30,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:07:30,838 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:07:30,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:07:30,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-11-22 02:07:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-11-22 02:07:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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) [2022-11-22 02:07:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2022-11-22 02:07:30,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 4 [2022-11-22 02:07:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:30,845 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2022-11-22 02:07:30,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-22 02:07:30,848 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2022-11-22 02:07:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:07:30,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:30,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:07:30,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:07:30,850 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-22 02:07:30,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash 408302515, now seen corresponding path program 1 times [2022-11-22 02:07:30,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:07:30,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781864963] [2022-11-22 02:07:30,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:30,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:07:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:07:30,908 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:07:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:07:30,967 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:07:30,968 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:07:30,969 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-22 02:07:30,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-22 02:07:30,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-11-22 02:07:30,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-22 02:07:30,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-22 02:07:30,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:07:30,975 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-22 02:07:30,980 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 02:07:30,981 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:07:31,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:07:31 BasicIcfg [2022-11-22 02:07:31,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:07:31,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:07:31,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:07:31,015 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:07:31,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:07:24" (3/4) ... [2022-11-22 02:07:31,018 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-22 02:07:31,080 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:07:31,080 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:07:31,081 INFO L158 Benchmark]: Toolchain (without parser) took 8271.36ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 139.5MB in the beginning and 148.8MB in the end (delta: -9.3MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2022-11-22 02:07:31,081 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 176.2MB. Free memory is still 145.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:07:31,082 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1296.78ms. Allocated memory is still 176.2MB. Free memory was 139.5MB in the beginning and 86.6MB in the end (delta: 53.0MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-11-22 02:07:31,082 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.23ms. Allocated memory is still 176.2MB. Free memory was 86.6MB in the beginning and 83.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:07:31,082 INFO L158 Benchmark]: Boogie Preprocessor took 38.01ms. Allocated memory is still 176.2MB. Free memory was 83.5MB in the beginning and 80.8MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 02:07:31,083 INFO L158 Benchmark]: RCFGBuilder took 724.97ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 80.8MB in the beginning and 170.5MB in the end (delta: -89.7MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2022-11-22 02:07:31,083 INFO L158 Benchmark]: TraceAbstraction took 6065.89ms. Allocated memory is still 211.8MB. Free memory was 170.5MB in the beginning and 150.9MB in the end (delta: 19.6MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2022-11-22 02:07:31,083 INFO L158 Benchmark]: Witness Printer took 65.87ms. Allocated memory is still 211.8MB. Free memory was 150.9MB in the beginning and 148.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:07:31,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 176.2MB. Free memory is still 145.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1296.78ms. Allocated memory is still 176.2MB. Free memory was 139.5MB in the beginning and 86.6MB in the end (delta: 53.0MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.23ms. Allocated memory is still 176.2MB. Free memory was 86.6MB in the beginning and 83.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.01ms. Allocated memory is still 176.2MB. Free memory was 83.5MB in the beginning and 80.8MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 724.97ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 80.8MB in the beginning and 170.5MB in the end (delta: -89.7MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6065.89ms. Allocated memory is still 211.8MB. Free memory was 170.5MB in the beginning and 150.9MB in the end (delta: 19.6MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * Witness Printer took 65.87ms. Allocated memory is still 211.8MB. Free memory was 150.9MB in the beginning and 148.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 105 PlacesBefore, 17 PlacesAfterwards, 106 TransitionsBefore, 15 TransitionsAfterwards, 294 CoEnabledTransitionPairs, 8 FixpointIterations, 89 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 132 TotalNumberOfCompositions, 355 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 303, independent: 276, independent conditional: 0, independent unconditional: 276, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 216, independent: 202, independent conditional: 0, independent unconditional: 202, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 216, independent: 201, independent conditional: 0, independent unconditional: 201, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 43, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 303, independent: 74, independent conditional: 0, independent unconditional: 74, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 216, unknown conditional: 0, unknown unconditional: 216] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, 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: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 111 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2022-11-22 02:07:31,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c72668-751e-4007-9699-dc85236efb4e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE