./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.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_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/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_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/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_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/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 c3428ae6a0cff233befb72334b90ad9e2070ed1c51acfcfa2fe6d4fef2ceb1ff --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:59:03,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:59:03,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:59:04,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:59:04,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:59:04,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:59:04,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:59:04,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:59:04,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:59:04,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:59:04,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:59:04,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:59:04,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:59:04,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:59:04,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:59:04,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:59:04,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:59:04,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:59:04,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:59:04,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:59:04,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:59:04,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:59:04,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:59:04,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:59:04,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:59:04,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:59:04,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:59:04,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:59:04,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:59:04,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:59:04,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:59:04,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:59:04,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:59:04,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:59:04,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:59:04,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:59:04,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:59:04,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:59:04,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:59:04,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:59:04,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:59:04,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:59:04,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:59:04,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:59:04,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:59:04,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:59:04,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:59:04,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:59:04,131 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:59:04,132 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:59:04,132 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:59:04,132 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:59:04,132 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:59:04,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:59:04,133 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:59:04,133 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:59:04,133 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:59:04,134 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:59:04,134 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:59:04,134 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:59:04,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:59:04,135 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:59:04,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:59:04,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:59:04,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:59:04,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:59:04,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:59:04,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:59:04,137 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:59:04,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:59:04,137 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:59:04,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:59:04,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:59:04,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:59:04,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:59:04,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:59:04,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:59:04,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:59:04,140 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:59:04,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:59:04,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:59:04,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:59:04,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:59:04,141 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_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3428ae6a0cff233befb72334b90ad9e2070ed1c51acfcfa2fe6d4fef2ceb1ff [2021-11-25 19:59:04,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:59:04,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:59:04,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:59:04,448 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:59:04,449 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:59:04,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c [2021-11-25 19:59:04,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/bin/utaipan-eEHZpOm5b7/data/f354ce129/dc3f60fcbb724342993f8ffcc4eb7918/FLAGbacd9e528 [2021-11-25 19:59:05,130 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:59:05,131 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c [2021-11-25 19:59:05,153 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/bin/utaipan-eEHZpOm5b7/data/f354ce129/dc3f60fcbb724342993f8ffcc4eb7918/FLAGbacd9e528 [2021-11-25 19:59:05,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/bin/utaipan-eEHZpOm5b7/data/f354ce129/dc3f60fcbb724342993f8ffcc4eb7918 [2021-11-25 19:59:05,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:59:05,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:59:05,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:59:05,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:59:05,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:59:05,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:59:05" (1/1) ... [2021-11-25 19:59:05,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a01453c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:05, skipping insertion in model container [2021-11-25 19:59:05,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:59:05" (1/1) ... [2021-11-25 19:59:05,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:59:05,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:59:05,781 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_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c[1682,1695] [2021-11-25 19:59:06,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:59:06,206 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:59:06,223 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_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c[1682,1695] [2021-11-25 19:59:06,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:59:06,474 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:59:06,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:06 WrapperNode [2021-11-25 19:59:06,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:59:06,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:59:06,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:59:06,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:59:06,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:06" (1/1) ... [2021-11-25 19:59:06,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:06" (1/1) ... [2021-11-25 19:59:06,759 INFO L137 Inliner]: procedures = 56, calls = 2072, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4032 [2021-11-25 19:59:06,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:59:06,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:59:06,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:59:06,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:59:06,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:06" (1/1) ... [2021-11-25 19:59:06,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:06" (1/1) ... [2021-11-25 19:59:06,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:06" (1/1) ... [2021-11-25 19:59:06,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:06" (1/1) ... [2021-11-25 19:59:06,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:06" (1/1) ... [2021-11-25 19:59:06,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:06" (1/1) ... [2021-11-25 19:59:06,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:06" (1/1) ... [2021-11-25 19:59:06,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:59:06,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:59:06,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:59:06,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:59:06,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:06" (1/1) ... [2021-11-25 19:59:06,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:59:06,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:06,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:59:07,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c5f3c2c-35b6-4fdf-9134-7d1266012ebb/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:59:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:59:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-11-25 19:59:07,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-11-25 19:59:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-11-25 19:59:07,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-11-25 19:59:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:59:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-11-25 19:59:07,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-11-25 19:59:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-11-25 19:59:07,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-11-25 19:59:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-11-25 19:59:07,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-11-25 19:59:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:59:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-11-25 19:59:07,048 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-11-25 19:59:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-11-25 19:59:07,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-11-25 19:59:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-25 19:59:07,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-11-25 19:59:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-25 19:59:07,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-11-25 19:59:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:59:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-11-25 19:59:07,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-11-25 19:59:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-11-25 19:59:07,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-11-25 19:59:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:59:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-25 19:59:07,050 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-25 19:59:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-11-25 19:59:07,051 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-11-25 19:59:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:59:07,051 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:59:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:59:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:59:07,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:59:07,052 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-11-25 19:59:07,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-11-25 19:59:07,052 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-11-25 19:59:07,052 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-11-25 19:59:07,053 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-11-25 19:59:07,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-11-25 19:59:07,629 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:59:07,632 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:59:15,328 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:59:15,492 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:59:15,493 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:59:15,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:59:15 BoogieIcfgContainer [2021-11-25 19:59:15,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:59:15,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:59:15,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:59:15,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:59:15,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:59:05" (1/3) ... [2021-11-25 19:59:15,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3581b24a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:59:15, skipping insertion in model container [2021-11-25 19:59:15,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:06" (2/3) ... [2021-11-25 19:59:15,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3581b24a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:59:15, skipping insertion in model container [2021-11-25 19:59:15,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:59:15" (3/3) ... [2021-11-25 19:59:15,509 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M4-1.c [2021-11-25 19:59:15,515 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:59:15,515 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:59:15,592 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:59:15,599 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 19:59:15,600 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:59:15,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 1618 states, 959 states have (on average 1.2283628779979145) internal successors, (1178), 964 states have internal predecessors, (1178), 640 states have call successors, (640), 17 states have call predecessors, (640), 17 states have return successors, (640), 638 states have call predecessors, (640), 640 states have call successors, (640) [2021-11-25 19:59:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2021-11-25 19:59:15,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:15,724 INFO L514 BasicCegarLoop]: trace histogram [209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:15,725 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:59:15,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:15,731 INFO L85 PathProgramCache]: Analyzing trace with hash 516111169, now seen corresponding path program 1 times [2021-11-25 19:59:15,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:15,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012177519] [2021-11-25 19:59:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:15,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms