./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_aso.4.M1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_aso.4.M1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7 --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 efc4c52a722d63f9628a5791b5e97bc661a62d89deb074bdb4352c608e6a3dd1 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:50:30,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:50:30,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:50:31,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:50:31,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:50:31,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:50:31,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:50:31,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:50:31,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:50:31,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:50:31,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:50:31,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:50:31,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:50:31,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:50:31,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:50:31,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:50:31,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:50:31,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:50:31,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:50:31,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:50:31,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:50:31,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:50:31,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:50:31,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:50:31,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:50:31,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:50:31,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:50:31,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:50:31,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:50:31,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:50:31,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:50:31,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:50:31,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:50:31,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:50:31,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:50:31,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:50:31,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:50:31,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:50:31,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:50:31,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:50:31,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:50:31,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:50:31,140 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:50:31,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:50:31,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:50:31,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:50:31,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:50:31,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:50:31,142 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:50:31,142 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:50:31,143 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:50:31,143 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:50:31,143 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:50:31,143 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:50:31,144 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:50:31,144 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:50:31,144 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:50:31,144 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:50:31,145 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:50:31,145 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:50:31,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:50:31,146 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:50:31,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:50:31,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:50:31,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:50:31,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:50:31,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:50:31,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:50:31,147 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:50:31,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:50:31,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:50:31,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:50:31,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:50:31,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:50:31,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:50:31,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:50:31,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:50:31,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:50:31,150 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:50:31,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:50:31,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:50:31,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:50:31,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:50:31,151 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efc4c52a722d63f9628a5791b5e97bc661a62d89deb074bdb4352c608e6a3dd1 [2021-11-25 19:50:31,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:50:31,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:50:31,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:50:31,465 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:50:31,466 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:50:31,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/seq-mthreaded/rekh_aso.4.M1.c [2021-11-25 19:50:31,542 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7/data/12b1dd387/1f82bb938ebd4e6bb3f1362038dce1e3/FLAGaf823666a [2021-11-25 19:50:32,296 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:50:32,297 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/sv-benchmarks/c/seq-mthreaded/rekh_aso.4.M1.c [2021-11-25 19:50:32,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7/data/12b1dd387/1f82bb938ebd4e6bb3f1362038dce1e3/FLAGaf823666a [2021-11-25 19:50:32,435 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7/data/12b1dd387/1f82bb938ebd4e6bb3f1362038dce1e3 [2021-11-25 19:50:32,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:50:32,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:50:32,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:50:32,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:50:32,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:50:32,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:50:32" (1/1) ... [2021-11-25 19:50:32,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e6bb902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:50:32, skipping insertion in model container [2021-11-25 19:50:32,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:50:32" (1/1) ... [2021-11-25 19:50:32,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:50:32,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:50:32,786 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/sv-benchmarks/c/seq-mthreaded/rekh_aso.4.M1.c[1806,1819] [2021-11-25 19:50:33,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:50:33,463 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:50:33,479 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/sv-benchmarks/c/seq-mthreaded/rekh_aso.4.M1.c[1806,1819] [2021-11-25 19:50:33,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:50:33,894 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:50:33,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:50:33 WrapperNode [2021-11-25 19:50:33,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:50:33,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:50:33,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:50:33,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:50:33,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:50:33" (1/1) ... [2021-11-25 19:50:34,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:50:33" (1/1) ... [2021-11-25 19:50:34,397 INFO L137 Inliner]: procedures = 70, calls = 5187, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 9753 [2021-11-25 19:50:34,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:50:34,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:50:34,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:50:34,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:50:34,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:50:33" (1/1) ... [2021-11-25 19:50:34,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:50:33" (1/1) ... [2021-11-25 19:50:34,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:50:33" (1/1) ... [2021-11-25 19:50:34,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:50:33" (1/1) ... [2021-11-25 19:50:34,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:50:33" (1/1) ... [2021-11-25 19:50:34,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:50:33" (1/1) ... [2021-11-25 19:50:34,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:50:33" (1/1) ... [2021-11-25 19:50:34,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:50:34,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:50:34,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:50:34,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:50:34,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:50:33" (1/1) ... [2021-11-25 19:50:34,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:50:34,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:50:35,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:50:35,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74903948-de55-411a-9ad8-656fde59242c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:50:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:50:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-11-25 19:50:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-11-25 19:50:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-11-25 19:50:35,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-11-25 19:50:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-11-25 19:50:35,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-11-25 19:50:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:50:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-11-25 19:50:35,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-11-25 19:50:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-11-25 19:50:35,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-11-25 19:50:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-11-25 19:50:35,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-11-25 19:50:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-11-25 19:50:35,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-11-25 19:50:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:50:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-11-25 19:50:35,148 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-11-25 19:50:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-11-25 19:50:35,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-11-25 19:50:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-11-25 19:50:35,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-11-25 19:50:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-11-25 19:50:35,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-11-25 19:50:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-25 19:50:35,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-25 19:50:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-25 19:50:35,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-25 19:50:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-11-25 19:50:35,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-11-25 19:50:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:50:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:50:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-25 19:50:35,151 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-25 19:50:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-11-25 19:50:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-11-25 19:50:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-11-25 19:50:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-11-25 19:50:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-11-25 19:50:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-11-25 19:50:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:50:35,153 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:50:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:50:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:50:35,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:50:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-11-25 19:50:35,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-11-25 19:50:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-11-25 19:50:35,156 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-11-25 19:50:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-11-25 19:50:35,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-11-25 19:50:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-11-25 19:50:35,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-11-25 19:50:36,014 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:50:36,016 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:50:49,533 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:50:50,245 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:50:50,245 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:50:50,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:50:50 BoogieIcfgContainer [2021-11-25 19:50:50,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:50:50,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:50:50,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:50:50,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:50:50,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:50:32" (1/3) ... [2021-11-25 19:50:50,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5513fce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:50:50, skipping insertion in model container [2021-11-25 19:50:50,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:50:33" (2/3) ... [2021-11-25 19:50:50,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5513fce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:50:50, skipping insertion in model container [2021-11-25 19:50:50,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:50:50" (3/3) ... [2021-11-25 19:50:50,267 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_aso.4.M1.c [2021-11-25 19:50:50,273 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:50:50,273 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:50:50,348 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:50:50,359 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:50:50,359 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:50:50,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 3519 states, 1990 states have (on average 1.1658291457286432) internal successors, (2320), 1994 states have internal predecessors, (2320), 1504 states have call successors, (1504), 23 states have call predecessors, (1504), 23 states have return successors, (1504), 1502 states have call predecessors, (1504), 1504 states have call successors, (1504) [2021-11-25 19:50:50,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2021-11-25 19:50:50,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:50:50,542 INFO L514 BasicCegarLoop]: trace histogram [210, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:50:50,542 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:50:50,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:50:50,552 INFO L85 PathProgramCache]: Analyzing trace with hash 136505921, now seen corresponding path program 1 times [2021-11-25 19:50:50,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:50:50,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873515304] [2021-11-25 19:50:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:50:50,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms