./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh --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 bddefdf3e33cf0835aee089299a408d34c996e1a935e7cc87de0cdc6493bca2a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:17:15,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:17:15,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:17:15,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:17:15,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:17:15,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:17:15,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:17:15,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:17:15,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:17:15,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:17:15,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:17:15,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:17:15,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:17:15,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:17:15,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:17:15,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:17:15,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:17:15,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:17:15,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:17:15,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:17:15,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:17:15,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:17:15,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:17:15,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:17:15,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:17:15,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:17:15,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:17:15,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:17:15,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:17:15,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:17:15,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:17:15,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:17:15,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:17:15,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:17:15,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:17:15,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:17:15,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:17:15,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:17:15,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:17:15,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:17:15,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:17:15,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:17:15,170 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:17:15,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:17:15,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:17:15,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:17:15,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:17:15,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:17:15,171 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:17:15,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:17:15,172 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:17:15,172 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:17:15,172 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:17:15,172 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:17:15,172 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:17:15,172 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:17:15,172 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:17:15,173 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:17:15,173 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:17:15,173 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:17:15,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:17:15,174 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:17:15,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:17:15,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:17:15,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:17:15,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:17:15,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:17:15,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:17:15,175 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:17:15,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:17:15,175 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:17:15,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:17:15,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:17:15,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:17:15,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:17:15,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:17:15,176 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:17:15,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:17:15,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:17:15,177 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:17:15,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:17:15,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:17:15,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:17:15,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bddefdf3e33cf0835aee089299a408d34c996e1a935e7cc87de0cdc6493bca2a [2022-12-14 08:17:15,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:17:15,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:17:15,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:17:15,398 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:17:15,398 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:17:15,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-2.c [2022-12-14 08:17:17,949 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:17:18,202 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:17:18,203 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-2.c [2022-12-14 08:17:18,214 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh/data/d2c3a46be/474e559320814cb8a2670b4b71101cf6/FLAGebb63f8c2 [2022-12-14 08:17:18,547 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh/data/d2c3a46be/474e559320814cb8a2670b4b71101cf6 [2022-12-14 08:17:18,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:17:18,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:17:18,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:17:18,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:17:18,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:17:18,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:17:18" (1/1) ... [2022-12-14 08:17:18,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b6f3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:17:18, skipping insertion in model container [2022-12-14 08:17:18,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:17:18" (1/1) ... [2022-12-14 08:17:18,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:17:18,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:17:18,753 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-2.c[1509,1522] [2022-12-14 08:17:18,793 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 08:17:18,794 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 08:17:18,795 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 08:17:18,799 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:17:18,799 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:17:18,800 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 08:17:18,800 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:17:18,800 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:17:18,810 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 08:17:18,811 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 08:17:18,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:17:18,963 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:17:18,973 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M1-2.c[1509,1522] [2022-12-14 08:17:18,986 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 08:17:18,986 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 08:17:18,987 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 08:17:18,989 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:17:18,989 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:17:18,989 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 08:17:18,989 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:17:18,990 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:17:18,994 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 08:17:18,994 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 08:17:19,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:17:19,126 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:17:19,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:17:19 WrapperNode [2022-12-14 08:17:19,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:17:19,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:17:19,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:17:19,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:17:19,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:17:19" (1/1) ... [2022-12-14 08:17:19,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:17:19" (1/1) ... [2022-12-14 08:17:19,276 INFO L138 Inliner]: procedures = 55, calls = 2033, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 3946 [2022-12-14 08:17:19,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:17:19,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:17:19,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:17:19,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:17:19,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:17:19" (1/1) ... [2022-12-14 08:17:19,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:17:19" (1/1) ... [2022-12-14 08:17:19,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:17:19" (1/1) ... [2022-12-14 08:17:19,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:17:19" (1/1) ... [2022-12-14 08:17:19,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:17:19" (1/1) ... [2022-12-14 08:17:19,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:17:19" (1/1) ... [2022-12-14 08:17:19,367 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:17:19" (1/1) ... [2022-12-14 08:17:19,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:17:19" (1/1) ... [2022-12-14 08:17:19,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:17:19,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:17:19,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:17:19,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:17:19,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:17:19" (1/1) ... [2022-12-14 08:17:19,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:17:19,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:17:19,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:17:19,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_137dc8a6-15a1-4b3a-8c76-b4534eaaa694/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:17:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:17:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 08:17:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 08:17:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-14 08:17:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-14 08:17:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:17:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 08:17:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 08:17:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 08:17:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 08:17:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-14 08:17:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-14 08:17:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 08:17:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 08:17:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 08:17:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-14 08:17:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-14 08:17:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 08:17:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 08:17:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 08:17:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 08:17:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:17:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 08:17:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 08:17:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 08:17:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-14 08:17:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-14 08:17:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 08:17:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 08:17:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:17:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:17:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:17:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-14 08:17:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-14 08:17:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 08:17:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 08:17:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-14 08:17:19,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-14 08:17:19,761 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:17:19,763 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:17:26,006 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:17:26,194 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:17:26,195 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:17:26,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:17:26 BoogieIcfgContainer [2022-12-14 08:17:26,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:17:26,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:17:26,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:17:26,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:17:26,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:17:18" (1/3) ... [2022-12-14 08:17:26,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef7153a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:17:26, skipping insertion in model container [2022-12-14 08:17:26,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:17:19" (2/3) ... [2022-12-14 08:17:26,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef7153a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:17:26, skipping insertion in model container [2022-12-14 08:17:26,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:17:26" (3/3) ... [2022-12-14 08:17:26,206 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M1-2.c [2022-12-14 08:17:26,221 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:17:26,221 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:17:26,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:17:26,292 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ff3558a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:17:26,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:17:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 1559 states, 931 states have (on average 1.2352309344790549) internal successors, (1150), 936 states have internal predecessors, (1150), 611 states have call successors, (611), 15 states have call predecessors, (611), 15 states have return successors, (611), 609 states have call predecessors, (611), 611 states have call successors, (611) [2022-12-14 08:17:26,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1563 [2022-12-14 08:17:26,384 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:17:26,385 INFO L195 NwaCegarLoop]: trace histogram [241, 27, 27, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:17:26,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:17:26,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:17:26,390 INFO L85 PathProgramCache]: Analyzing trace with hash 304939717, now seen corresponding path program 1 times [2022-12-14 08:17:26,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:17:26,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463467252] [2022-12-14 08:17:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:17:26,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms