./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V --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 fe3c2276a7cb4a5d1230bb06af9c590640e6d7fcc357e815e8e5e988ba323a74 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:43:01,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:43:01,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:43:01,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:43:01,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:43:01,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:43:01,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:43:01,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:43:01,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:43:01,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:43:01,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:43:01,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:43:01,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:43:01,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:43:01,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:43:01,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:43:02,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:43:02,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:43:02,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:43:02,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:43:02,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:43:02,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:43:02,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:43:02,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:43:02,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:43:02,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:43:02,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:43:02,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:43:02,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:43:02,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:43:02,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:43:02,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:43:02,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:43:02,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:43:02,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:43:02,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:43:02,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:43:02,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:43:02,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:43:02,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:43:02,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:43:02,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:43:02,078 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:43:02,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:43:02,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:43:02,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:43:02,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:43:02,082 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:43:02,082 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:43:02,083 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:43:02,083 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:43:02,084 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:43:02,084 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:43:02,085 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:43:02,085 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:43:02,086 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:43:02,086 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:43:02,087 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:43:02,088 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:43:02,088 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:43:02,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:43:02,090 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:43:02,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:43:02,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:43:02,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:43:02,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:43:02,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:43:02,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:43:02,100 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:43:02,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:43:02,101 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:43:02,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:43:02,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:43:02,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:43:02,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:43:02,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:43:02,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:43:02,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:43:02,106 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:43:02,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:43:02,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:43:02,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:43:02,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:43:02,112 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_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe3c2276a7cb4a5d1230bb06af9c590640e6d7fcc357e815e8e5e988ba323a74 [2021-11-23 03:43:02,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:43:02,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:43:02,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:43:02,473 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:43:02,474 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:43:02,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M1-2.c [2021-11-23 03:43:02,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V/data/0291fc6f2/3f3094adeb404a34ab2bad47d3ebbc35/FLAGede6821e7 [2021-11-23 03:43:03,417 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:43:03,423 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M1-2.c [2021-11-23 03:43:03,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V/data/0291fc6f2/3f3094adeb404a34ab2bad47d3ebbc35/FLAGede6821e7 [2021-11-23 03:43:03,532 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V/data/0291fc6f2/3f3094adeb404a34ab2bad47d3ebbc35 [2021-11-23 03:43:03,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:43:03,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:43:03,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:43:03,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:43:03,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:43:03,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:43:03" (1/1) ... [2021-11-23 03:43:03,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a5e20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:03, skipping insertion in model container [2021-11-23 03:43:03,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:43:03" (1/1) ... [2021-11-23 03:43:03,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:43:03,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:43:03,950 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_a5fe11b9-064e-4a74-85d6-731010cd6d81/sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M1-2.c[2320,2333] [2021-11-23 03:43:04,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:43:04,412 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:43:04,453 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_a5fe11b9-064e-4a74-85d6-731010cd6d81/sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M1-2.c[2320,2333] [2021-11-23 03:43:04,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:43:04,878 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:43:04,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:04 WrapperNode [2021-11-23 03:43:04,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:43:04,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:43:04,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:43:04,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:43:04,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:04" (1/1) ... [2021-11-23 03:43:05,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:04" (1/1) ... [2021-11-23 03:43:05,312 INFO L137 Inliner]: procedures = 63, calls = 2147, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4519 [2021-11-23 03:43:05,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:43:05,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:43:05,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:43:05,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:43:05,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:04" (1/1) ... [2021-11-23 03:43:05,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:04" (1/1) ... [2021-11-23 03:43:05,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:04" (1/1) ... [2021-11-23 03:43:05,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:04" (1/1) ... [2021-11-23 03:43:05,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:04" (1/1) ... [2021-11-23 03:43:05,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:04" (1/1) ... [2021-11-23 03:43:05,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:04" (1/1) ... [2021-11-23 03:43:05,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:43:05,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:43:05,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:43:05,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:43:05,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:04" (1/1) ... [2021-11-23 03:43:05,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:43:05,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:43:05,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:43:05,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe11b9-064e-4a74-85d6-731010cd6d81/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:43:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:43:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-11-23 03:43:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-11-23 03:43:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-11-23 03:43:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-11-23 03:43:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-11-23 03:43:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-11-23 03:43:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:43:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-11-23 03:43:05,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-11-23 03:43:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-11-23 03:43:05,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-11-23 03:43:05,740 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-11-23 03:43:05,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-11-23 03:43:05,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:43:05,740 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-11-23 03:43:05,741 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-11-23 03:43:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-11-23 03:43:05,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-11-23 03:43:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-11-23 03:43:05,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-11-23 03:43:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-23 03:43:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-23 03:43:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-23 03:43:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-23 03:43:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-11-23 03:43:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-11-23 03:43:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:43:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:43:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-23 03:43:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-23 03:43:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-11-23 03:43:05,744 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-11-23 03:43:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-11-23 03:43:05,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-11-23 03:43:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-11-23 03:43:05,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-11-23 03:43:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:43:05,745 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:43:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:43:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:43:05,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:43:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-11-23 03:43:05,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-11-23 03:43:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-11-23 03:43:05,748 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-11-23 03:43:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-11-23 03:43:05,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-11-23 03:43:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-11-23 03:43:05,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-11-23 03:43:06,420 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:43:06,423 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:43:14,587 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:43:15,075 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:43:15,076 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:43:15,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:43:15 BoogieIcfgContainer [2021-11-23 03:43:15,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:43:15,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:43:15,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:43:15,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:43:15,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:43:03" (1/3) ... [2021-11-23 03:43:15,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cad372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:43:15, skipping insertion in model container [2021-11-23 03:43:15,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:04" (2/3) ... [2021-11-23 03:43:15,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cad372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:43:15, skipping insertion in model container [2021-11-23 03:43:15,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:43:15" (3/3) ... [2021-11-23 03:43:15,100 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_aso.2.M1-2.c [2021-11-23 03:43:15,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:43:15,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:43:15,199 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:43:15,212 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 [2021-11-23 03:43:15,213 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:43:15,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 1365 states, 833 states have (on average 1.2665066026410565) internal successors, (1055), 864 states have internal predecessors, (1055), 509 states have call successors, (509), 21 states have call predecessors, (509), 21 states have return successors, (509), 507 states have call predecessors, (509), 509 states have call successors, (509) [2021-11-23 03:43:15,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2021-11-23 03:43:15,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:15,401 INFO L514 BasicCegarLoop]: trace histogram [137, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:43:15,402 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:43:15,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:15,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2121573926, now seen corresponding path program 1 times [2021-11-23 03:43:15,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:15,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304844120] [2021-11-23 03:43:15,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:15,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat