./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-1.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_ad9b977f-a5da-4628-9eb5-e576d901aa4e/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9b977f-a5da-4628-9eb5-e576d901aa4e/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_ad9b977f-a5da-4628-9eb5-e576d901aa4e/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9b977f-a5da-4628-9eb5-e576d901aa4e/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9b977f-a5da-4628-9eb5-e576d901aa4e/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_ad9b977f-a5da-4628-9eb5-e576d901aa4e/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 6591ce47dfe4224cb6f7a03e7ab6e8c9fb535aeaf619e89bc0784a15f3516b25 --- 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 00:45:05,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:45:05,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:45:06,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:45:06,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:45:06,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:45:06,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:45:06,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:45:06,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:45:06,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:45:06,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:45:06,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:45:06,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:45:06,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:45:06,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:45:06,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:45:06,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:45:06,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:45:06,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:45:06,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:45:06,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:45:06,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:45:06,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:45:06,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:45:06,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:45:06,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:45:06,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:45:06,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:45:06,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:45:06,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:45:06,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:45:06,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:45:06,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:45:06,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:45:06,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:45:06,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:45:06,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:45:06,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:45:06,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:45:06,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:45:06,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:45:06,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9b977f-a5da-4628-9eb5-e576d901aa4e/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:45:06,138 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:45:06,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:45:06,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:45:06,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:45:06,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:45:06,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:45:06,141 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:45:06,142 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:45:06,142 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:45:06,142 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:45:06,143 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:45:06,143 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:45:06,144 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:45:06,144 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:45:06,144 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:45:06,145 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:45:06,145 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:45:06,145 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:45:06,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:45:06,146 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:45:06,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:45:06,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:45:06,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:45:06,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:45:06,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:45:06,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:45:06,148 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:45:06,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:45:06,148 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:45:06,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:45:06,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:45:06,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:45:06,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:45:06,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:45:06,150 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:45:06,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:45:06,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:45:06,151 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:45:06,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:45:06,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:45:06,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:45:06,152 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_ad9b977f-a5da-4628-9eb5-e576d901aa4e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9b977f-a5da-4628-9eb5-e576d901aa4e/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6591ce47dfe4224cb6f7a03e7ab6e8c9fb535aeaf619e89bc0784a15f3516b25 [2022-11-26 00:45:06,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:45:06,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:45:06,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:45:06,503 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:45:06,503 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:45:06,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9b977f-a5da-4628-9eb5-e576d901aa4e/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-1.c [2022-11-26 00:45:09,611 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:45:10,017 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:45:10,017 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9b977f-a5da-4628-9eb5-e576d901aa4e/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-1.c [2022-11-26 00:45:10,038 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9b977f-a5da-4628-9eb5-e576d901aa4e/bin/utaipan-ByfvJB40ur/data/df1b8b7ca/28690cd3979441c798b4b0dadda1069d/FLAG1ae3e02c1 [2022-11-26 00:45:10,061 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9b977f-a5da-4628-9eb5-e576d901aa4e/bin/utaipan-ByfvJB40ur/data/df1b8b7ca/28690cd3979441c798b4b0dadda1069d [2022-11-26 00:45:10,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:45:10,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:45:10,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:45:10,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:45:10,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:45:10,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:45:10" (1/1) ... [2022-11-26 00:45:10,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371150f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:10, skipping insertion in model container [2022-11-26 00:45:10,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:45:10" (1/1) ... [2022-11-26 00:45:10,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:45:10,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:45:10,414 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_ad9b977f-a5da-4628-9eb5-e576d901aa4e/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-1.c[1800,1813] [2022-11-26 00:45:10,497 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-26 00:45:10,498 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-26 00:45:10,500 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-11-26 00:45:10,505 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:45:10,505 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:45:10,506 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:45:10,507 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:45:10,519 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-11-26 00:45:10,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:45:10,959 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:45:10,984 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_ad9b977f-a5da-4628-9eb5-e576d901aa4e/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M4-1.c[1800,1813] [2022-11-26 00:45:11,009 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-26 00:45:11,009 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-26 00:45:11,010 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-11-26 00:45:11,012 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:45:11,012 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:45:11,012 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:45:11,013 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-26 00:45:11,017 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-11-26 00:45:11,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:45:11,264 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:45:11,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:11 WrapperNode [2022-11-26 00:45:11,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:45:11,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:45:11,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:45:11,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:45:11,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:11" (1/1) ... [2022-11-26 00:45:11,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:11" (1/1) ... [2022-11-26 00:45:11,560 INFO L138 Inliner]: procedures = 60, calls = 3154, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5973 [2022-11-26 00:45:11,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:45:11,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:45:11,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:45:11,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:45:11,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:11" (1/1) ... [2022-11-26 00:45:11,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:11" (1/1) ... [2022-11-26 00:45:11,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:11" (1/1) ... [2022-11-26 00:45:11,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:11" (1/1) ... [2022-11-26 00:45:11,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:11" (1/1) ... [2022-11-26 00:45:11,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:11" (1/1) ... [2022-11-26 00:45:11,773 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:11" (1/1) ... [2022-11-26 00:45:11,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:11" (1/1) ... [2022-11-26 00:45:11,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:45:11,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:45:11,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:45:11,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:45:11,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:11" (1/1) ... [2022-11-26 00:45:11,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:45:11,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9b977f-a5da-4628-9eb5-e576d901aa4e/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:45:11,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9b977f-a5da-4628-9eb5-e576d901aa4e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:45:11,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9b977f-a5da-4628-9eb5-e576d901aa4e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:45:11,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:45:11,904 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2022-11-26 00:45:11,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2022-11-26 00:45:11,904 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-26 00:45:11,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-26 00:45:11,905 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-11-26 00:45:11,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-11-26 00:45:11,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:45:11,906 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-26 00:45:11,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-26 00:45:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-26 00:45:11,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-26 00:45:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-11-26 00:45:11,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-11-26 00:45:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:45:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-26 00:45:11,908 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-26 00:45:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-11-26 00:45:11,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-11-26 00:45:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2022-11-26 00:45:11,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2022-11-26 00:45:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-26 00:45:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-26 00:45:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-26 00:45:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-26 00:45:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-11-26 00:45:11,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-11-26 00:45:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:45:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-11-26 00:45:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-11-26 00:45:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:45:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-26 00:45:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-26 00:45:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-11-26 00:45:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-11-26 00:45:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2022-11-26 00:45:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2022-11-26 00:45:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-11-26 00:45:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-11-26 00:45:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-26 00:45:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-26 00:45:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:45:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:45:11,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:45:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-11-26 00:45:11,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-11-26 00:45:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-26 00:45:11,913 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-26 00:45:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-11-26 00:45:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-11-26 00:45:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2022-11-26 00:45:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2022-11-26 00:45:12,587 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:45:12,589 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:45:22,867 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:45:23,170 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:45:23,171 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:45:23,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:45:23 BoogieIcfgContainer [2022-11-26 00:45:23,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:45:23,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:45:23,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:45:23,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:45:23,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:45:10" (1/3) ... [2022-11-26 00:45:23,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a43b095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:45:23, skipping insertion in model container [2022-11-26 00:45:23,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:11" (2/3) ... [2022-11-26 00:45:23,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a43b095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:45:23, skipping insertion in model container [2022-11-26 00:45:23,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:45:23" (3/3) ... [2022-11-26 00:45:23,220 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_aso.1.M4-1.c [2022-11-26 00:45:23,241 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:45:23,241 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:45:23,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:45:23,361 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;@75e054da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:45:23,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:45:23,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 2297 states, 1333 states have (on average 1.1987996999249813) internal successors, (1598), 1337 states have internal predecessors, (1598), 940 states have call successors, (940), 22 states have call predecessors, (940), 22 states have return successors, (940), 938 states have call predecessors, (940), 940 states have call successors, (940) [2022-11-26 00:45:23,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2022-11-26 00:45:23,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:45:23,446 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, 1, 1, 1, 1, 1, 1, 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 00:45:23,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:45:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:45:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash -960952708, now seen corresponding path program 1 times [2022-11-26 00:45:23,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:45:23,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045446081] [2022-11-26 00:45:23,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:45:23,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms