./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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.2.M1-2.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 e0f65ddacc19e229149f7733305e27ede1d7c46ea04122324ae4c2ba294bcff0 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:02:11,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:02:11,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:02:11,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:02:11,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:02:11,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:02:11,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:02:11,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:02:11,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:02:11,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:02:11,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:02:11,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:02:11,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:02:11,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:02:11,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:02:11,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:02:11,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:02:11,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:02:11,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:02:11,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:02:11,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:02:11,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:02:11,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:02:11,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:02:11,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:02:11,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:02:11,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:02:11,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:02:11,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:02:11,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:02:11,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:02:11,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:02:11,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:02:11,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:02:11,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:02:11,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:02:11,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:02:11,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:02:11,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:02:11,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:02:11,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:02:11,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:02:11,610 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:02:11,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:02:11,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:02:11,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:02:11,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:02:11,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:02:11,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:02:11,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:02:11,613 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:02:11,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:02:11,614 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:02:11,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:02:11,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:02:11,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:02:11,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:02:11,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:02:11,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:02:11,615 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:02:11,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:02:11,615 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:02:11,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:02:11,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:02:11,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:02:11,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:02:11,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:02:11,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:02:11,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:02:11,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:02:11,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:02:11,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:02:11,617 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:02:11,618 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:02:11,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:02:11,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:02:11,618 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0f65ddacc19e229149f7733305e27ede1d7c46ea04122324ae4c2ba294bcff0 [2021-12-17 16:02:11,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:02:11,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:02:11,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:02:11,876 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:02:11,877 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:02:11,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M1-2.c [2021-12-17 16:02:11,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c637905f/d660cf56a07946508596626b2316d894/FLAG85b48a989 [2021-12-17 16:02:12,430 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:02:12,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_aso.2.M1-2.c [2021-12-17 16:02:12,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c637905f/d660cf56a07946508596626b2316d894/FLAG85b48a989 [2021-12-17 16:02:12,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c637905f/d660cf56a07946508596626b2316d894 [2021-12-17 16:02:12,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:02:12,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:02:12,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:02:12,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:02:12,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:02:12,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:02:12" (1/1) ... [2021-12-17 16:02:12,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6032c7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:02:12, skipping insertion in model container [2021-12-17 16:02:12,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:02:12" (1/1) ... [2021-12-17 16:02:12,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:02:12,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:02:12,986 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.2.M1-2.c[1974,1987] [2021-12-17 16:02:13,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:02:13,301 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:02:13,310 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.2.M1-2.c[1974,1987] [2021-12-17 16:02:13,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:02:13,509 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:02:13,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:02:13 WrapperNode [2021-12-17 16:02:13,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:02:13,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:02:13,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:02:13,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:02:13,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:02:13" (1/1) ... [2021-12-17 16:02:13,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:02:13" (1/1) ... [2021-12-17 16:02:13,765 INFO L137 Inliner]: procedures = 61, calls = 3158, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 6014 [2021-12-17 16:02:13,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:02:13,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:02:13,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:02:13,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:02:13,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:02:13" (1/1) ... [2021-12-17 16:02:13,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:02:13" (1/1) ... [2021-12-17 16:02:13,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:02:13" (1/1) ... [2021-12-17 16:02:13,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:02:13" (1/1) ... [2021-12-17 16:02:13,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:02:13" (1/1) ... [2021-12-17 16:02:13,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:02:13" (1/1) ... [2021-12-17 16:02:13,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:02:13" (1/1) ... [2021-12-17 16:02:14,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:02:14,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:02:14,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:02:14,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:02:14,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:02:13" (1/1) ... [2021-12-17 16:02:14,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:02:14,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:02:14,069 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) [2021-12-17 16:02:14,090 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 [2021-12-17 16:02:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:02:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2021-12-17 16:02:14,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2021-12-17 16:02:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-17 16:02:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-17 16:02:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-17 16:02:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-17 16:02:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 16:02:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-17 16:02:14,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-17 16:02:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-17 16:02:14,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-17 16:02:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-17 16:02:14,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-17 16:02:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 16:02:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-17 16:02:14,129 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-17 16:02:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-17 16:02:14,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-17 16:02:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2021-12-17 16:02:14,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2021-12-17 16:02:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-17 16:02:14,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-17 16:02:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-17 16:02:14,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-17 16:02:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-17 16:02:14,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2021-12-17 16:02:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 16:02:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 16:02:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-17 16:02:14,131 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-17 16:02:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-17 16:02:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-17 16:02:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2021-12-17 16:02:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2021-12-17 16:02:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-17 16:02:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-17 16:02:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 16:02:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 16:02:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:02:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:02:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:02:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-17 16:02:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-17 16:02:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-17 16:02:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-17 16:02:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-17 16:02:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-17 16:02:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2021-12-17 16:02:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2021-12-17 16:02:14,566 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:02:14,568 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:02:21,551 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:02:21,572 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:02:21,573 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 16:02:21,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:02:21 BoogieIcfgContainer [2021-12-17 16:02:21,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:02:21,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:02:21,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:02:21,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:02:21,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:02:12" (1/3) ... [2021-12-17 16:02:21,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61057b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:02:21, skipping insertion in model container [2021-12-17 16:02:21,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:02:13" (2/3) ... [2021-12-17 16:02:21,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61057b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:02:21, skipping insertion in model container [2021-12-17 16:02:21,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:02:21" (3/3) ... [2021-12-17 16:02:21,598 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_aso.2.M1-2.c [2021-12-17 16:02:21,604 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:02:21,604 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 16:02:21,662 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:02:21,668 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 [2021-12-17 16:02:21,668 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 16:02:21,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 2371 states, 1382 states have (on average 1.2011577424023154) internal successors, (1660), 1386 states have internal predecessors, (1660), 966 states have call successors, (966), 21 states have call predecessors, (966), 21 states have return successors, (966), 964 states have call predecessors, (966), 966 states have call successors, (966) [2021-12-17 16:02:21,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1337 [2021-12-17 16:02:21,764 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:02:21,766 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] [2021-12-17 16:02:21,767 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:02:21,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:02:21,771 INFO L85 PathProgramCache]: Analyzing trace with hash -982308712, now seen corresponding path program 1 times [2021-12-17 16:02:21,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:02:21,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205111908] [2021-12-17 16:02:21,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:02:21,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms