./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 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_faa9527b-78b3-4106-af09-293765c90ba7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa9527b-78b3-4106-af09-293765c90ba7/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_faa9527b-78b3-4106-af09-293765c90ba7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa9527b-78b3-4106-af09-293765c90ba7/bin/utaipan-gh47qXpMRh/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_faa9527b-78b3-4106-af09-293765c90ba7/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_faa9527b-78b3-4106-af09-293765c90ba7/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 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-2329fc7 [2022-12-14 09:59:53,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:59:53,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:59:53,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:59:53,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:59:53,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:59:53,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:59:53,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:59:53,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:59:53,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:59:53,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:59:53,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:59:53,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:59:53,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:59:53,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:59:53,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:59:53,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:59:53,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:59:53,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:59:53,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:59:53,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:59:53,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:59:53,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:59:53,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:59:53,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:59:53,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:59:53,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:59:53,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:59:53,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:59:53,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:59:53,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:59:53,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:59:53,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:59:53,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:59:53,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:59:53,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:59:53,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:59:53,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:59:53,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:59:53,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:59:53,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:59:53,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa9527b-78b3-4106-af09-293765c90ba7/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:59:53,832 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:59:53,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:59:53,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:59:53,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:59:53,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:59:53,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:59:53,834 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:59:53,834 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:59:53,834 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:59:53,834 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:59:53,834 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:59:53,834 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:59:53,834 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:59:53,835 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:59:53,835 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:59:53,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:59:53,835 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:59:53,835 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:59:53,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:59:53,836 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:59:53,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:59:53,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:59:53,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:59:53,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:59:53,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:59:53,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:59:53,837 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:59:53,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:59:53,837 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:59:53,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:59:53,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:59:53,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:59:53,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:59:53,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:59:53,838 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:59:53,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:59:53,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:59:53,838 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:59:53,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:59:53,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:59:53,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:59:53,839 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_faa9527b-78b3-4106-af09-293765c90ba7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa9527b-78b3-4106-af09-293765c90ba7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1eb342ebadad5f5d28e5fd9eb503795cab40e31c0a35c7b5f4b6a3c65ed5e13 [2022-12-14 09:59:54,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:59:54,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:59:54,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:59:54,034 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:59:54,034 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:59:54,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa9527b-78b3-4106-af09-293765c90ba7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c [2022-12-14 09:59:56,611 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:59:56,834 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:59:56,834 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa9527b-78b3-4106-af09-293765c90ba7/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c [2022-12-14 09:59:56,845 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa9527b-78b3-4106-af09-293765c90ba7/bin/utaipan-gh47qXpMRh/data/7b65c6553/335c0c7e243945b7ab08b80e49048d11/FLAGfa3e4f6d9 [2022-12-14 09:59:56,855 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa9527b-78b3-4106-af09-293765c90ba7/bin/utaipan-gh47qXpMRh/data/7b65c6553/335c0c7e243945b7ab08b80e49048d11 [2022-12-14 09:59:56,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:59:56,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:59:56,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:59:56,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:59:56,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:59:56,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:59:56" (1/1) ... [2022-12-14 09:59:56,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57147341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:56, skipping insertion in model container [2022-12-14 09:59:56,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:59:56" (1/1) ... [2022-12-14 09:59:56,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:59:56,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:59:57,051 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_faa9527b-78b3-4106-af09-293765c90ba7/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c[1682,1695] [2022-12-14 09:59:57,108 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 09:59:57,109 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 09:59:57,111 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 09:59:57,116 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 09:59:57,116 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 09:59:57,117 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 09:59:57,117 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 09:59:57,118 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 09:59:57,131 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 09:59:57,131 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 09:59:57,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:59:57,328 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:59:57,341 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_faa9527b-78b3-4106-af09-293765c90ba7/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-2.c[1682,1695] [2022-12-14 09:59:57,358 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 09:59:57,358 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 09:59:57,359 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 09:59:57,361 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 09:59:57,362 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 09:59:57,362 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 09:59:57,362 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 09:59:57,363 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 09:59:57,367 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 09:59:57,367 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 09:59:57,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:59:57,510 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:59:57,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:57 WrapperNode [2022-12-14 09:59:57,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:59:57,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:59:57,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:59:57,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:59:57,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:57" (1/1) ... [2022-12-14 09:59:57,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:57" (1/1) ... [2022-12-14 09:59:57,654 INFO L138 Inliner]: procedures = 56, calls = 2059, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4010 [2022-12-14 09:59:57,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:59:57,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:59:57,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:59:57,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:59:57,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:57" (1/1) ... [2022-12-14 09:59:57,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:57" (1/1) ... [2022-12-14 09:59:57,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:57" (1/1) ... [2022-12-14 09:59:57,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:57" (1/1) ... [2022-12-14 09:59:57,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:57" (1/1) ... [2022-12-14 09:59:57,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:57" (1/1) ... [2022-12-14 09:59:57,764 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:57" (1/1) ... [2022-12-14 09:59:57,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:57" (1/1) ... [2022-12-14 09:59:57,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:59:57,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:59:57,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:59:57,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:59:57,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:57" (1/1) ... [2022-12-14 09:59:57,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:59:57,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa9527b-78b3-4106-af09-293765c90ba7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:59:57,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa9527b-78b3-4106-af09-293765c90ba7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:59:57,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa9527b-78b3-4106-af09-293765c90ba7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:59:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:59:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 09:59:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 09:59:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-14 09:59:57,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-14 09:59:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:59:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 09:59:57,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 09:59:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 09:59:57,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 09:59:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-14 09:59:57,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-14 09:59:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 09:59:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 09:59:57,870 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 09:59:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-14 09:59:57,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-14 09:59:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 09:59:57,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 09:59:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 09:59:57,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 09:59:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:59:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 09:59:57,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 09:59:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 09:59:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-14 09:59:57,871 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-14 09:59:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-14 09:59:57,871 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-14 09:59:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 09:59:57,871 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 09:59:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:59:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:59:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:59:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-14 09:59:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-14 09:59:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 09:59:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 09:59:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-14 09:59:57,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-14 09:59:58,164 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:59:58,166 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:00:04,687 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:00:04,889 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:00:04,890 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 10:00:04,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:00:04 BoogieIcfgContainer [2022-12-14 10:00:04,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:00:04,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:00:04,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:00:04,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:00:04,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:59:56" (1/3) ... [2022-12-14 10:00:04,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b32d417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:00:04, skipping insertion in model container [2022-12-14 10:00:04,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:57" (2/3) ... [2022-12-14 10:00:04,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b32d417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:00:04, skipping insertion in model container [2022-12-14 10:00:04,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:00:04" (3/3) ... [2022-12-14 10:00:04,900 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M1-2.c [2022-12-14 10:00:04,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:00:04,914 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:00:04,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:00:04,976 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;@3851e88d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:00:04,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:00:04,983 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) [2022-12-14 10:00:05,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2022-12-14 10:00:05,021 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:05,022 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] [2022-12-14 10:00:05,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:00:05,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:05,026 INFO L85 PathProgramCache]: Analyzing trace with hash -53222788, now seen corresponding path program 1 times [2022-12-14 10:00:05,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:05,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707686725] [2022-12-14 10:00:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:05,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms