./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2db6eb55010ab7d3a1a946055e6deb2837efdfd8388654051519bf5d1a66e523 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 11:56:25,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:56:25,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:56:25,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:56:25,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:56:25,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:56:25,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:56:25,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:56:25,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:56:25,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:56:25,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:56:25,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:56:25,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:56:25,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:56:25,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:56:25,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:56:25,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:56:25,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:56:25,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:56:25,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:56:25,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:56:25,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:56:25,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:56:25,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:56:25,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:56:25,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:56:25,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:56:25,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:56:25,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:56:25,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:56:25,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:56:25,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:56:25,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:56:25,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:56:25,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:56:25,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:56:25,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:56:25,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:56:25,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:56:25,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:56:25,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:56:25,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:56:25,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:56:25,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:56:25,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:56:25,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:56:25,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:56:25,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:56:25,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:56:25,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:56:25,510 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:56:25,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:56:25,511 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:56:25,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:56:25,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:56:25,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:56:25,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:56:25,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:56:25,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:56:25,512 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:56:25,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:56:25,513 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:56:25,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:56:25,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:56:25,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:56:25,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:56:25,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:56:25,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:56:25,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:56:25,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:56:25,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:56:25,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:56:25,515 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:56:25,515 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:56:25,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:56:25,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:56:25,516 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2db6eb55010ab7d3a1a946055e6deb2837efdfd8388654051519bf5d1a66e523 [2021-12-22 11:56:25,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:56:25,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:56:25,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:56:25,732 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:56:25,732 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:56:25,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-1.c [2021-12-22 11:56:25,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de4090cae/91c23f2a5e4b4291aac14395e0f207d3/FLAG4ca9ef747 [2021-12-22 11:56:26,236 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:56:26,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-1.c [2021-12-22 11:56:26,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de4090cae/91c23f2a5e4b4291aac14395e0f207d3/FLAG4ca9ef747 [2021-12-22 11:56:26,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de4090cae/91c23f2a5e4b4291aac14395e0f207d3 [2021-12-22 11:56:26,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:56:26,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:56:26,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:56:26,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:56:26,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:56:26,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:56:26" (1/1) ... [2021-12-22 11:56:26,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f91c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:26, skipping insertion in model container [2021-12-22 11:56:26,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:56:26" (1/1) ... [2021-12-22 11:56:26,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:56:26,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:56:26,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-1.c[1800,1813] [2021-12-22 11:56:27,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:56:27,058 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:56:27,067 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.1.M1-1.c[1800,1813] [2021-12-22 11:56:27,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:56:27,272 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:56:27,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:27 WrapperNode [2021-12-22 11:56:27,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:56:27,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:56:27,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:56:27,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:56:27,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:27" (1/1) ... [2021-12-22 11:56:27,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:27" (1/1) ... [2021-12-22 11:56:27,531 INFO L137 Inliner]: procedures = 60, calls = 3129, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5933 [2021-12-22 11:56:27,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:56:27,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:56:27,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:56:27,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:56:27,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:27" (1/1) ... [2021-12-22 11:56:27,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:27" (1/1) ... [2021-12-22 11:56:27,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:27" (1/1) ... [2021-12-22 11:56:27,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:27" (1/1) ... [2021-12-22 11:56:27,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:27" (1/1) ... [2021-12-22 11:56:27,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:27" (1/1) ... [2021-12-22 11:56:27,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:27" (1/1) ... [2021-12-22 11:56:27,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:56:27,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:56:27,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:56:27,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:56:27,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:27" (1/1) ... [2021-12-22 11:56:27,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:56:27,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:56:27,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 11:56:27,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 11:56:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:56:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-12-22 11:56:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-12-22 11:56:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-22 11:56:27,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-22 11:56:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-22 11:56:27,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-22 11:56:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 11:56:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-22 11:56:27,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-22 11:56:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-22 11:56:27,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-22 11:56:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-22 11:56:27,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-22 11:56:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 11:56:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-22 11:56:27,860 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-22 11:56:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-22 11:56:27,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-22 11:56:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-12-22 11:56:27,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-12-22 11:56:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-22 11:56:27,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-22 11:56:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-22 11:56:27,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-22 11:56:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-22 11:56:27,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-22 11:56:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 11:56:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 11:56:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-22 11:56:27,862 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-22 11:56:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-22 11:56:27,862 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-22 11:56:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-12-22 11:56:27,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-12-22 11:56:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-22 11:56:27,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-22 11:56:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 11:56:27,863 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 11:56:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:56:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:56:27,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:56:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-22 11:56:27,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-22 11:56:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-22 11:56:27,864 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-22 11:56:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-22 11:56:27,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-22 11:56:27,865 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-12-22 11:56:27,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-12-22 11:56:28,336 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:56:28,338 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:56:35,626 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:56:35,643 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:56:35,644 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 11:56:35,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:56:35 BoogieIcfgContainer [2021-12-22 11:56:35,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:56:35,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:56:35,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:56:35,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:56:35,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:56:26" (1/3) ... [2021-12-22 11:56:35,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527e0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:56:35, skipping insertion in model container [2021-12-22 11:56:35,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:56:27" (2/3) ... [2021-12-22 11:56:35,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527e0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:56:35, skipping insertion in model container [2021-12-22 11:56:35,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:56:35" (3/3) ... [2021-12-22 11:56:35,656 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_aso.1.M1-1.c [2021-12-22 11:56:35,660 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:56:35,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:56:35,711 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:56:35,716 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 11:56:35,717 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:56:35,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 2335 states, 1374 states have (on average 1.1986899563318778) internal successors, (1647), 1378 states have internal predecessors, (1647), 938 states have call successors, (938), 21 states have call predecessors, (938), 21 states have return successors, (938), 936 states have call predecessors, (938), 938 states have call successors, (938) [2021-12-22 11:56:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1337 [2021-12-22 11:56:35,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:56:35,831 INFO L514 BasicCegarLoop]: trace histogram [209, 209, 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, 1, 1, 1, 1, 1, 1] [2021-12-22 11:56:35,832 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:56:35,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:56:35,838 INFO L85 PathProgramCache]: Analyzing trace with hash -534578223, now seen corresponding path program 1 times [2021-12-22 11:56:35,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:56:35,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580722350] [2021-12-22 11:56:35,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:56:35,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms