./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/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_11df2319-22d8-40ad-bcb2-51a696f9ed1f/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/reorder_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/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_11df2319-22d8-40ad-bcb2-51a696f9ed1f/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 7c8e5f65b78a025b6376ca00ad63a807363d8e09dfbfc133c782b166d87996a6 --- 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 02:18:09,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:18:09,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:18:09,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:18:09,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:18:09,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:18:09,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:18:09,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:18:09,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:18:09,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:18:09,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:18:09,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:18:09,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:18:09,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:18:09,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:18:09,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:18:09,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:18:09,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:18:09,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:18:09,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:18:09,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:18:09,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:18:09,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:18:09,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:18:09,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:18:09,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:18:09,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:18:09,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:18:09,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:18:09,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:18:09,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:18:09,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:18:09,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:18:09,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:18:09,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:18:09,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:18:09,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:18:09,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:18:09,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:18:09,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:18:09,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:18:09,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:18:09,194 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:18:09,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:18:09,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:18:09,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:18:09,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:18:09,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:18:09,197 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:18:09,198 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:18:09,198 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:18:09,198 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:18:09,200 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:18:09,200 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:18:09,200 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:18:09,201 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:18:09,201 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:18:09,201 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:18:09,202 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:18:09,202 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:18:09,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:18:09,203 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:18:09,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:18:09,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:18:09,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:18:09,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:18:09,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:18:09,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:18:09,205 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:18:09,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:18:09,206 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:18:09,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:18:09,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:18:09,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:18:09,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:18:09,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:18:09,208 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:18:09,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:18:09,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:18:09,209 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:18:09,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:18:09,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:18:09,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:18:09,210 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_11df2319-22d8-40ad-bcb2-51a696f9ed1f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c8e5f65b78a025b6376ca00ad63a807363d8e09dfbfc133c782b166d87996a6 [2022-11-22 02:18:09,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:18:09,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:18:09,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:18:09,592 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:18:09,592 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:18:09,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/pthread/reorder_2.i [2022-11-22 02:18:12,697 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:18:13,038 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:18:13,038 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/sv-benchmarks/c/pthread/reorder_2.i [2022-11-22 02:18:13,064 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/bin/utaipan-g80aRyZoba/data/79dd8a201/5762452c092844288c378808c4fa0500/FLAG769896504 [2022-11-22 02:18:13,084 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/bin/utaipan-g80aRyZoba/data/79dd8a201/5762452c092844288c378808c4fa0500 [2022-11-22 02:18:13,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:18:13,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:18:13,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:18:13,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:18:13,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:18:13,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:18:13" (1/1) ... [2022-11-22 02:18:13,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c55cbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:13, skipping insertion in model container [2022-11-22 02:18:13,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:18:13" (1/1) ... [2022-11-22 02:18:13,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:18:13,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:18:13,706 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_11df2319-22d8-40ad-bcb2-51a696f9ed1f/sv-benchmarks/c/pthread/reorder_2.i[59793,59806] [2022-11-22 02:18:13,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:18:13,726 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:18:13,778 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_11df2319-22d8-40ad-bcb2-51a696f9ed1f/sv-benchmarks/c/pthread/reorder_2.i[59793,59806] [2022-11-22 02:18:13,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:18:13,895 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:18:13,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:13 WrapperNode [2022-11-22 02:18:13,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:18:13,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:18:13,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:18:13,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:18:13,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:13" (1/1) ... [2022-11-22 02:18:13,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:13" (1/1) ... [2022-11-22 02:18:13,986 INFO L138 Inliner]: procedures = 370, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 135 [2022-11-22 02:18:13,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:18:13,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:18:13,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:18:13,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:18:13,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:13" (1/1) ... [2022-11-22 02:18:13,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:13" (1/1) ... [2022-11-22 02:18:14,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:13" (1/1) ... [2022-11-22 02:18:14,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:13" (1/1) ... [2022-11-22 02:18:14,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:13" (1/1) ... [2022-11-22 02:18:14,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:13" (1/1) ... [2022-11-22 02:18:14,044 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:13" (1/1) ... [2022-11-22 02:18:14,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:13" (1/1) ... [2022-11-22 02:18:14,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:18:14,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:18:14,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:18:14,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:18:14,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:13" (1/1) ... [2022-11-22 02:18:14,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:18:14,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:18:14,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:18:14,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:18:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:18:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:18:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:18:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-22 02:18:14,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-22 02:18:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:18:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:18:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-22 02:18:14,164 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-22 02:18:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:18:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:18:14,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:18:14,166 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 02:18:14,348 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:18:14,350 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:18:14,754 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:18:14,764 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:18:14,764 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-22 02:18:14,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:14 BoogieIcfgContainer [2022-11-22 02:18:14,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:18:14,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:18:14,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:18:14,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:18:14,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:18:13" (1/3) ... [2022-11-22 02:18:14,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b89cbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:18:14, skipping insertion in model container [2022-11-22 02:18:14,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:18:13" (2/3) ... [2022-11-22 02:18:14,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b89cbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:18:14, skipping insertion in model container [2022-11-22 02:18:14,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:14" (3/3) ... [2022-11-22 02:18:14,784 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2022-11-22 02:18:14,794 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 02:18:14,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:18:14,807 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:18:14,807 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 02:18:14,929 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-22 02:18:14,978 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 02:18:15,004 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 157 transitions, 336 flow [2022-11-22 02:18:15,009 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 157 transitions, 336 flow [2022-11-22 02:18:15,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 157 transitions, 336 flow [2022-11-22 02:18:15,134 INFO L130 PetriNetUnfolder]: 35/333 cut-off events. [2022-11-22 02:18:15,135 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-22 02:18:15,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 333 events. 35/333 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1139 event pairs, 0 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 174. Up to 8 conditions per place. [2022-11-22 02:18:15,147 INFO L119 LiptonReduction]: Number of co-enabled transitions 2234 [2022-11-22 02:18:25,411 INFO L134 LiptonReduction]: Checked pairs total: 3354 [2022-11-22 02:18:25,411 INFO L136 LiptonReduction]: Total number of compositions: 163 [2022-11-22 02:18:25,420 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 27 transitions, 76 flow [2022-11-22 02:18:25,441 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 119 states, 110 states have (on average 2.036363636363636) internal successors, (224), 118 states have internal predecessors, (224), 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 02:18:25,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:18:25,466 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;@3bc99f9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:18:25,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-22 02:18:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 110 states have (on average 2.036363636363636) internal successors, (224), 118 states have internal predecessors, (224), 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 02:18:25,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:18:25,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:25,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:18:25,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-22 02:18:25,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:25,481 INFO L85 PathProgramCache]: Analyzing trace with hash 554735323, now seen corresponding path program 1 times [2022-11-22 02:18:25,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:25,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275290976] [2022-11-22 02:18:25,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:25,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:25,828 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 02:18:25,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:25,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275290976] [2022-11-22 02:18:25,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275290976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:25,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:25,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:18:25,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289440456] [2022-11-22 02:18:25,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:25,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:18:25,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:25,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:18:25,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:18:25,868 INFO L87 Difference]: Start difference. First operand has 119 states, 110 states have (on average 2.036363636363636) internal successors, (224), 118 states have internal predecessors, (224), 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, 2 states have (on average 2.5) internal successors, (5), 2 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 02:18:25,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:25,959 INFO L93 Difference]: Finished difference Result 111 states and 194 transitions. [2022-11-22 02:18:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:18:25,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) Word has length 5 [2022-11-22 02:18:25,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:25,971 INFO L225 Difference]: With dead ends: 111 [2022-11-22 02:18:25,971 INFO L226 Difference]: Without dead ends: 106 [2022-11-22 02:18:25,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 02:18:25,975 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:25,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:18:25,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-22 02:18:26,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-22 02:18:26,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 98 states have (on average 1.9285714285714286) internal successors, (189), 105 states have internal predecessors, (189), 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 02:18:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 189 transitions. [2022-11-22 02:18:26,016 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 189 transitions. Word has length 5 [2022-11-22 02:18:26,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:26,016 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 189 transitions. [2022-11-22 02:18:26,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 02:18:26,017 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 189 transitions. [2022-11-22 02:18:26,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:18:26,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:26,017 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-22 02:18:26,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:18:26,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-22 02:18:26,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:26,019 INFO L85 PathProgramCache]: Analyzing trace with hash 28072665, now seen corresponding path program 1 times [2022-11-22 02:18:26,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:26,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318186328] [2022-11-22 02:18:26,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:26,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:18:26,070 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:18:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:18:26,174 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:18:26,174 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:18:26,175 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-22 02:18:26,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-22 02:18:26,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-22 02:18:26,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-22 02:18:26,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:18:26,180 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-22 02:18:26,182 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 02:18:26,182 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-22 02:18:26,222 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-22 02:18:26,233 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 02:18:26,233 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 177 transitions, 402 flow [2022-11-22 02:18:26,234 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 177 transitions, 402 flow [2022-11-22 02:18:26,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 177 transitions, 402 flow [2022-11-22 02:18:26,457 INFO L130 PetriNetUnfolder]: 147/1072 cut-off events. [2022-11-22 02:18:26,457 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-22 02:18:26,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169 conditions, 1072 events. 147/1072 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5595 event pairs, 2 based on Foata normal form. 0/932 useless extension candidates. Maximal degree in co-relation 624. Up to 32 conditions per place. [2022-11-22 02:18:26,485 INFO L119 LiptonReduction]: Number of co-enabled transitions 5132 [2022-11-22 02:18:36,233 INFO L134 LiptonReduction]: Checked pairs total: 10471 [2022-11-22 02:18:36,234 INFO L136 LiptonReduction]: Total number of compositions: 172 [2022-11-22 02:18:36,235 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 39 transitions, 126 flow [2022-11-22 02:18:36,406 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2267 states, 2228 states have (on average 3.0978456014362656) internal successors, (6902), 2266 states have internal predecessors, (6902), 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 02:18:36,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:18:36,415 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;@3bc99f9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:18:36,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-22 02:18:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 2267 states, 2228 states have (on average 3.0978456014362656) internal successors, (6902), 2266 states have internal predecessors, (6902), 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 02:18:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:18:36,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:36,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:18:36,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-22 02:18:36,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:36,425 INFO L85 PathProgramCache]: Analyzing trace with hash 904859108, now seen corresponding path program 1 times [2022-11-22 02:18:36,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:36,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661054827] [2022-11-22 02:18:36,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:36,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:36,527 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 02:18:36,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:36,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661054827] [2022-11-22 02:18:36,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661054827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:36,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:36,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:18:36,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197701718] [2022-11-22 02:18:36,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:36,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:18:36,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:36,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:18:36,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:18:36,539 INFO L87 Difference]: Start difference. First operand has 2267 states, 2228 states have (on average 3.0978456014362656) internal successors, (6902), 2266 states have internal predecessors, (6902), 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, 2 states have (on average 2.5) internal successors, (5), 2 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 02:18:36,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:36,679 INFO L93 Difference]: Finished difference Result 2203 states and 6526 transitions. [2022-11-22 02:18:36,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:18:36,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) Word has length 5 [2022-11-22 02:18:36,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:36,703 INFO L225 Difference]: With dead ends: 2203 [2022-11-22 02:18:36,703 INFO L226 Difference]: Without dead ends: 2170 [2022-11-22 02:18:36,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 02:18:36,705 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:36,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 12 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:18:36,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2170 states. [2022-11-22 02:18:36,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2170 to 2170. [2022-11-22 02:18:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2170 states, 2134 states have (on average 3.036551077788191) internal successors, (6480), 2169 states have internal predecessors, (6480), 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 02:18:36,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 6480 transitions. [2022-11-22 02:18:36,864 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 6480 transitions. Word has length 5 [2022-11-22 02:18:36,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:36,864 INFO L495 AbstractCegarLoop]: Abstraction has 2170 states and 6480 transitions. [2022-11-22 02:18:36,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 02:18:36,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 6480 transitions. [2022-11-22 02:18:36,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:18:36,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:36,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:36,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:18:36,871 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-22 02:18:36,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:36,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2038041010, now seen corresponding path program 1 times [2022-11-22 02:18:36,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:36,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972907815] [2022-11-22 02:18:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:36,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:18:36,953 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:18:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:18:37,016 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:18:37,017 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:18:37,017 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-22 02:18:37,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-22 02:18:37,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-22 02:18:37,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-22 02:18:37,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-22 02:18:37,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:18:37,019 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-22 02:18:37,024 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-11-22 02:18:37,031 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:18:37,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:18:37 BasicIcfg [2022-11-22 02:18:37,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:18:37,101 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:18:37,101 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:18:37,101 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:18:37,102 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:18:14" (3/4) ... [2022-11-22 02:18:37,104 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-22 02:18:37,199 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:18:37,199 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:18:37,200 INFO L158 Benchmark]: Toolchain (without parser) took 24110.73ms. Allocated memory was 169.9MB in the beginning and 245.4MB in the end (delta: 75.5MB). Free memory was 124.3MB in the beginning and 120.3MB in the end (delta: 4.0MB). Peak memory consumption was 82.5MB. Max. memory is 16.1GB. [2022-11-22 02:18:37,201 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 125.8MB. Free memory was 67.3MB in the beginning and 67.2MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:18:37,201 INFO L158 Benchmark]: CACSL2BoogieTranslator took 802.87ms. Allocated memory is still 169.9MB. Free memory was 124.3MB in the beginning and 85.8MB in the end (delta: 38.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-22 02:18:37,201 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.65ms. Allocated memory is still 169.9MB. Free memory was 85.8MB in the beginning and 83.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:18:37,202 INFO L158 Benchmark]: Boogie Preprocessor took 71.54ms. Allocated memory is still 169.9MB. Free memory was 83.0MB in the beginning and 80.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:18:37,202 INFO L158 Benchmark]: RCFGBuilder took 706.83ms. Allocated memory is still 169.9MB. Free memory was 80.9MB in the beginning and 125.0MB in the end (delta: -44.0MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-11-22 02:18:37,203 INFO L158 Benchmark]: TraceAbstraction took 22327.30ms. Allocated memory was 169.9MB in the beginning and 245.4MB in the end (delta: 75.5MB). Free memory was 125.0MB in the beginning and 126.6MB in the end (delta: -1.6MB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. [2022-11-22 02:18:37,203 INFO L158 Benchmark]: Witness Printer took 98.47ms. Allocated memory is still 245.4MB. Free memory was 125.6MB in the beginning and 120.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-22 02:18:37,205 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 125.8MB. Free memory was 67.3MB in the beginning and 67.2MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 802.87ms. Allocated memory is still 169.9MB. Free memory was 124.3MB in the beginning and 85.8MB in the end (delta: 38.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.65ms. Allocated memory is still 169.9MB. Free memory was 85.8MB in the beginning and 83.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.54ms. Allocated memory is still 169.9MB. Free memory was 83.0MB in the beginning and 80.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 706.83ms. Allocated memory is still 169.9MB. Free memory was 80.9MB in the beginning and 125.0MB in the end (delta: -44.0MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * TraceAbstraction took 22327.30ms. Allocated memory was 169.9MB in the beginning and 245.4MB in the end (delta: 75.5MB). Free memory was 125.0MB in the beginning and 126.6MB in the end (delta: -1.6MB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. * Witness Printer took 98.47ms. Allocated memory is still 245.4MB. Free memory was 125.6MB in the beginning and 120.3MB in the end (delta: 5.2MB). 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: 10.4s, 147 PlacesBefore, 28 PlacesAfterwards, 157 TransitionsBefore, 27 TransitionsAfterwards, 2234 CoEnabledTransitionPairs, 6 FixpointIterations, 45 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 27 ConcurrentYvCompositions, 11 ChoiceCompositions, 163 TotalNumberOfCompositions, 3354 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2713, independent: 2679, independent conditional: 0, independent unconditional: 2679, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1767, independent: 1753, independent conditional: 0, independent unconditional: 1753, 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: 1767, independent: 1753, independent conditional: 0, independent unconditional: 1753, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 45, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2713, independent: 926, independent conditional: 0, independent unconditional: 926, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 1767, unknown conditional: 0, unknown unconditional: 1767] , Statistics on independence cache: Total cache size (in pairs): 70, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.0s, 166 PlacesBefore, 40 PlacesAfterwards, 177 TransitionsBefore, 39 TransitionsAfterwards, 5132 CoEnabledTransitionPairs, 7 FixpointIterations, 45 TrivialSequentialCompositions, 78 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 30 ConcurrentYvCompositions, 12 ChoiceCompositions, 172 TotalNumberOfCompositions, 10471 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7799, independent: 7719, independent conditional: 0, independent unconditional: 7719, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3995, independent: 3967, independent conditional: 0, independent unconditional: 3967, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3995, independent: 3961, independent conditional: 0, independent unconditional: 3961, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 34, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 87, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7799, independent: 3752, independent conditional: 0, independent unconditional: 3752, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 3995, unknown conditional: 0, unknown unconditional: 3995] , Statistics on independence cache: Total cache size (in pairs): 193, Positive cache size: 185, Positive conditional cache size: 0, Positive unconditional cache size: 185, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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: 1292]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1236] 0 static int iSet = 2; [L1237] 0 static int iCheck = 2; [L1238] 0 static int a = 0; [L1239] 0 static int b = 0; [L1245] 0 int i, err; [L1246] COND TRUE 0 argc != 1 [L1247] COND FALSE 0 !(argc != 3) [L1255] EXPR 0 \read(iSet) [L1255] 0 pthread_t setPool[iSet]; [L1256] EXPR 0 \read(iCheck) [L1256] 0 pthread_t checkPool[iCheck]; [L1257] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={50:51}, argv={50:51}, b=0, checkPool={13:0}, fprintf(stderr, "./reorder \n")=52, i=0, iCheck={10:0}, iSet={9:0}, setPool={11:0}] [L1257] EXPR 0 \read(iSet) [L1257] COND TRUE 0 i < iSet [L1258] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={50:51}, argv={50:51}, b=0, checkPool={13:0}, fprintf(stderr, "./reorder \n")=52, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=0, setPool={11:0}] [L1285] 1 a = 1 VAL [a=1, b=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}] [L1258] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=1, argc=3, argv={50:51}, argv={50:51}, b=0, checkPool={13:0}, err=0, fprintf(stderr, "./reorder \n")=52, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=0, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=0, setPool={11:0}] [L1258] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1257] 0 i++ VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=1, argc=3, argv={50:51}, argv={50:51}, b=0, checkPool={13:0}, err=0, fprintf(stderr, "./reorder \n")=52, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=49, i=1, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, setPool={11:0}] [L1257] EXPR 0 \read(iSet) [L1257] COND FALSE 0 !(i < iSet) [L1263] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=1, argc=3, argv={50:51}, argv={50:51}, b=0, checkPool={13:0}, err=0, fprintf(stderr, "./reorder \n")=52, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=49, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, setPool={11:0}] [L1263] EXPR 0 \read(iCheck) [L1263] COND TRUE 0 i < iCheck [L1264-L1265] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=1, argc=3, argv={50:51}, argv={50:51}, b=0, checkPool={13:0}, err=0, fprintf(stderr, "./reorder \n")=52, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=49, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, param={0:0}, pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0))=1, setPool={11:0}] [L1290] COND TRUE 2 ! ((a == 0 && b == 0) || (a == 1 && b == -1)) [L1292] 2 reach_error() VAL [a=1, b=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, param={0:0}, param={0:0}] - UnprovableResult [Line: 1264]: 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: 1258]: 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, 158 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 11.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 4 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred 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, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 173 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 10.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 64 IncrementalHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 6 mSDtfsCounter, 64 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2267occurred 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: 0.2s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 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! [2022-11-22 02:18:37,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11df2319-22d8-40ad-bcb2-51a696f9ed1f/bin/utaipan-g80aRyZoba/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