./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.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_nxt.2.M4-2.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 564efe4dc14fe185d57e5aeec9a3ab580efe33ed3c6c6b76402e1a3f93fbdd78 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:03:58,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:03:58,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:03:58,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:03:58,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:03:58,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:03:58,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:03:58,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:03:58,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:03:58,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:03:58,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:03:58,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:03:58,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:03:58,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:03:58,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:03:58,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:03:58,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:03:58,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:03:58,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:03:58,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:03:58,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:03:58,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:03:58,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:03:58,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:03:58,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:03:58,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:03:58,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:03:58,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:03:58,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:03:58,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:03:58,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:03:58,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:03:58,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:03:58,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:03:58,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:03:58,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:03:58,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:03:58,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:03:58,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:03:58,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:03:58,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:03:58,632 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:03:58,658 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:03:58,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:03:58,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:03:58,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:03:58,659 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:03:58,660 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:03:58,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:03:58,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:03:58,660 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:03:58,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:03:58,661 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:03:58,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:03:58,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:03:58,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:03:58,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:03:58,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:03:58,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:03:58,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:03:58,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:03:58,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:03:58,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:03:58,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:03:58,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:03:58,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:03:58,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:03:58,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:03:58,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:03:58,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:03:58,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:03:58,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:03:58,664 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:03:58,664 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:03:58,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:03:58,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:03:58,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 564efe4dc14fe185d57e5aeec9a3ab580efe33ed3c6c6b76402e1a3f93fbdd78 [2021-12-17 16:03:58,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:03:58,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:03:58,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:03:58,905 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:03:58,906 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:03:58,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c [2021-12-17 16:03:58,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03ad778e9/ea2235837f414b949a93c42f3efe2eff/FLAG188f2244c [2021-12-17 16:03:59,481 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:03:59,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c [2021-12-17 16:03:59,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03ad778e9/ea2235837f414b949a93c42f3efe2eff/FLAG188f2244c [2021-12-17 16:03:59,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03ad778e9/ea2235837f414b949a93c42f3efe2eff [2021-12-17 16:03:59,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:03:59,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:03:59,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:03:59,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:03:59,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:03:59,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:03:59" (1/1) ... [2021-12-17 16:03:59,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1538016f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:03:59, skipping insertion in model container [2021-12-17 16:03:59,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:03:59" (1/1) ... [2021-12-17 16:03:59,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:04:00,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:04:00,178 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_nxt.2.M4-2.c[1765,1778] [2021-12-17 16:04:00,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:04:00,453 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:04:00,462 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_nxt.2.M4-2.c[1765,1778] [2021-12-17 16:04:00,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:04:00,624 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:04:00,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:04:00 WrapperNode [2021-12-17 16:04:00,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:04:00,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:04:00,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:04:00,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:04:00,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:04:00" (1/1) ... [2021-12-17 16:04:00,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:04:00" (1/1) ... [2021-12-17 16:04:00,806 INFO L137 Inliner]: procedures = 60, calls = 2543, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4814 [2021-12-17 16:04:00,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:04:00,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:04:00,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:04:00,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:04:00,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:04:00" (1/1) ... [2021-12-17 16:04:00,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:04:00" (1/1) ... [2021-12-17 16:04:00,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:04:00" (1/1) ... [2021-12-17 16:04:00,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:04:00" (1/1) ... [2021-12-17 16:04:00,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:04:00" (1/1) ... [2021-12-17 16:04:00,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:04:00" (1/1) ... [2021-12-17 16:04:00,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:04:00" (1/1) ... [2021-12-17 16:04:01,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:04:01,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:04:01,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:04:01,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:04:01,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:04:00" (1/1) ... [2021-12-17 16:04:01,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:04:01,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:04:01,053 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 16:04:01,056 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 16:04:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:04:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-17 16:04:01,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-17 16:04:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-17 16:04:01,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-17 16:04:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 16:04:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-17 16:04:01,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-17 16:04:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-17 16:04:01,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-17 16:04:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2021-12-17 16:04:01,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2021-12-17 16:04:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-17 16:04:01,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-17 16:04:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 16:04:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-17 16:04:01,094 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-17 16:04:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-17 16:04:01,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-17 16:04:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-17 16:04:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-17 16:04:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-17 16:04:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-17 16:04:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 16:04:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-17 16:04:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-17 16:04:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-17 16:04:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-17 16:04:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 16:04:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-17 16:04:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-17 16:04:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-17 16:04:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-17 16:04:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-17 16:04:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-17 16:04:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 16:04:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 16:04:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:04:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:04:01,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:04:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-17 16:04:01,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-17 16:04:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-17 16:04:01,098 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-17 16:04:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-17 16:04:01,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-17 16:04:01,529 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:04:01,532 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:04:07,836 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:04:07,852 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:04:07,852 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 16:04:07,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:04:07 BoogieIcfgContainer [2021-12-17 16:04:07,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:04:07,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:04:07,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:04:07,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:04:07,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:03:59" (1/3) ... [2021-12-17 16:04:07,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de1717a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:04:07, skipping insertion in model container [2021-12-17 16:04:07,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:04:00" (2/3) ... [2021-12-17 16:04:07,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de1717a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:04:07, skipping insertion in model container [2021-12-17 16:04:07,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:04:07" (3/3) ... [2021-12-17 16:04:07,860 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M4-2.c [2021-12-17 16:04:07,863 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:04:07,863 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 16:04:07,900 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:04:07,905 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 16:04:07,905 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 16:04:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 1944 states, 1149 states have (on average 1.2027850304612706) internal successors, (1382), 1154 states have internal predecessors, (1382), 774 states have call successors, (774), 19 states have call predecessors, (774), 19 states have return successors, (774), 772 states have call predecessors, (774), 774 states have call successors, (774) [2021-12-17 16:04:08,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2021-12-17 16:04:08,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:04:08,026 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] [2021-12-17 16:04:08,026 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:04:08,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:04:08,031 INFO L85 PathProgramCache]: Analyzing trace with hash 502494177, now seen corresponding path program 1 times [2021-12-17 16:04:08,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:04:08,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535896965] [2021-12-17 16:04:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:04:08,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms