./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur --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 a1eb342ebadad5f5d28e5fd9eb503795cab40e31c0a35c7b5f4b6a3c65ed5e13 --- 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-38b53e6 [2022-11-26 00:11:04,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:11:04,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:11:04,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:11:04,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:11:04,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:11:04,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:11:04,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:11:04,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:11:04,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:11:04,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:11:04,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:11:04,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:11:04,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:11:04,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:11:04,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:11:04,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:11:04,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:11:04,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:11:04,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:11:04,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:11:04,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:11:04,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:11:04,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:11:04,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:11:04,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:11:04,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:11:04,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:11:04,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:11:04,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:11:04,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:11:04,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:11:04,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:11:04,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:11:04,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:11:04,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:11:04,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:11:04,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:11:04,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:11:04,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:11:04,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:11:04,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:11:04,273 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:11:04,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:11:04,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:11:04,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:11:04,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:11:04,284 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:11:04,284 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:11:04,284 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:11:04,284 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:11:04,285 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:11:04,286 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:11:04,286 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:11:04,286 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:11:04,287 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:11:04,287 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:11:04,287 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:11:04,287 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:11:04,288 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:11:04,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:11:04,289 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:11:04,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:11:04,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:11:04,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:11:04,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:11:04,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:11:04,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:11:04,290 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:11:04,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:11:04,291 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:11:04,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:11:04,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:11:04,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:11:04,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:11:04,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:11:04,292 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:11:04,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:11:04,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:11:04,293 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:11:04,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:11:04,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:11:04,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:11:04,294 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_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1eb342ebadad5f5d28e5fd9eb503795cab40e31c0a35c7b5f4b6a3c65ed5e13 [2022-11-26 00:11:04,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:11:04,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:11:04,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:11:04,626 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:11:04,627 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:11:04,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c [2022-11-26 00:11:07,880 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:11:08,227 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:11:08,240 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c [2022-11-26 00:11:08,275 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur/data/07b62ef80/1e5b90c9732b4729add8c30c7cbd6066/FLAG77f5d3233 [2022-11-26 00:11:08,297 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur/data/07b62ef80/1e5b90c9732b4729add8c30c7cbd6066 [2022-11-26 00:11:08,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:11:08,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:11:08,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:11:08,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:11:08,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:11:08,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:11:08" (1/1) ... [2022-11-26 00:11:08,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f4a4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:08, skipping insertion in model container [2022-11-26 00:11:08,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:11:08" (1/1) ... [2022-11-26 00:11:08,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:11:08,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:11:08,642 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_4870fea5-2855-4c29-9ec1-09e301d6dc61/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c[1682,1695] [2022-11-26 00:11:08,762 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-26 00:11:08,763 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-26 00:11:08,774 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-11-26 00:11:08,790 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:11:08,791 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:11:08,792 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-11-26 00:11:08,793 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:11:08,794 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:11:08,824 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-11-26 00:11:08,825 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-11-26 00:11:09,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:11:09,083 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:11:09,097 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_4870fea5-2855-4c29-9ec1-09e301d6dc61/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c[1682,1695] [2022-11-26 00:11:09,136 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-26 00:11:09,145 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-26 00:11:09,146 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-11-26 00:11:09,149 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:11:09,151 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:11:09,152 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-11-26 00:11:09,154 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:11:09,155 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:11:09,158 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-11-26 00:11:09,161 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-11-26 00:11:09,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:11:09,407 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:11:09,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:09 WrapperNode [2022-11-26 00:11:09,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:11:09,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:11:09,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:11:09,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:11:09,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:09" (1/1) ... [2022-11-26 00:11:09,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:09" (1/1) ... [2022-11-26 00:11:09,662 INFO L138 Inliner]: procedures = 56, calls = 2059, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4010 [2022-11-26 00:11:09,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:11:09,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:11:09,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:11:09,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:11:09,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:09" (1/1) ... [2022-11-26 00:11:09,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:09" (1/1) ... [2022-11-26 00:11:09,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:09" (1/1) ... [2022-11-26 00:11:09,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:09" (1/1) ... [2022-11-26 00:11:09,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:09" (1/1) ... [2022-11-26 00:11:09,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:09" (1/1) ... [2022-11-26 00:11:09,859 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:09" (1/1) ... [2022-11-26 00:11:09,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:09" (1/1) ... [2022-11-26 00:11:09,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:11:09,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:11:09,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:11:09,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:11:09,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:09" (1/1) ... [2022-11-26 00:11:09,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:11:09,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:11:09,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:11:09,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4870fea5-2855-4c29-9ec1-09e301d6dc61/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:11:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:11:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-26 00:11:09,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-26 00:11:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-11-26 00:11:09,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-11-26 00:11:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:11:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-26 00:11:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-26 00:11:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-26 00:11:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-26 00:11:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-11-26 00:11:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-11-26 00:11:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:11:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-26 00:11:09,999 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-26 00:11:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-11-26 00:11:09,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-11-26 00:11:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-26 00:11:09,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-26 00:11:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-26 00:11:09,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-26 00:11:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:11:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-11-26 00:11:10,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-11-26 00:11:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:11:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-26 00:11:10,001 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-26 00:11:10,002 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-11-26 00:11:10,002 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-11-26 00:11:10,002 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-26 00:11:10,002 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-26 00:11:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:11:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:11:10,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:11:10,007 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-11-26 00:11:10,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-11-26 00:11:10,008 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-26 00:11:10,008 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-26 00:11:10,008 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-11-26 00:11:10,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-11-26 00:11:10,531 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:11:10,533 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:11:18,032 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:11:18,447 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:11:18,447 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:11:18,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:11:18 BoogieIcfgContainer [2022-11-26 00:11:18,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:11:18,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:11:18,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:11:18,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:11:18,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:11:08" (1/3) ... [2022-11-26 00:11:18,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a35b2e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:11:18, skipping insertion in model container [2022-11-26 00:11:18,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:09" (2/3) ... [2022-11-26 00:11:18,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a35b2e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:11:18, skipping insertion in model container [2022-11-26 00:11:18,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:11:18" (3/3) ... [2022-11-26 00:11:18,467 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M1-2.c [2022-11-26 00:11:18,489 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:11:18,489 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:11:18,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:11:18,619 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;@60661909, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:11:18,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:11:18,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 1612 states, 956 states have (on average 1.2290794979079498) internal successors, (1175), 961 states have internal predecessors, (1175), 638 states have call successors, (638), 16 states have call predecessors, (638), 16 states have return successors, (638), 636 states have call predecessors, (638), 638 states have call successors, (638) [2022-11-26 00:11:18,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2022-11-26 00:11:18,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:18,703 INFO L195 NwaCegarLoop]: 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] [2022-11-26 00:11:18,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:11:18,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:18,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1881620003, now seen corresponding path program 1 times [2022-11-26 00:11:18,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:18,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456748462] [2022-11-26 00:11:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:18,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms