./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 35987657 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-?-3598765 [2022-07-21 05:35:24,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:35:24,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:35:24,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:35:24,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:35:24,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:35:24,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:35:24,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:35:24,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:35:24,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:35:24,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:35:24,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:35:24,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:35:24,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:35:24,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:35:24,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:35:24,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:35:24,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:35:24,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:35:24,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:35:24,104 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:35:24,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:35:24,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:35:24,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:35:24,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:35:24,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:35:24,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:35:24,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:35:24,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:35:24,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:35:24,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:35:24,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:35:24,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:35:24,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:35:24,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:35:24,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:35:24,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:35:24,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:35:24,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:35:24,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:35:24,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:35:24,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:35:24,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:35:24,159 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:35:24,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:35:24,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:35:24,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:35:24,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:35:24,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:35:24,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:35:24,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:35:24,165 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:35:24,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:35:24,166 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:35:24,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:35:24,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:35:24,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:35:24,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:35:24,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:35:24,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:35:24,167 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:35:24,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:35:24,168 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:35:24,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:35:24,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:35:24,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:35:24,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:35:24,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:35:24,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:35:24,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:35:24,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:35:24,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:35:24,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:35:24,170 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:35:24,170 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:35:24,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:35:24,171 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 564efe4dc14fe185d57e5aeec9a3ab580efe33ed3c6c6b76402e1a3f93fbdd78 [2022-07-21 05:35:24,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:35:24,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:35:24,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:35:24,547 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:35:24,547 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:35:24,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c [2022-07-21 05:35:24,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e1014dc7/0820c1b0b8ce4b4baa3b75e47506ed33/FLAGfe2bf5397 [2022-07-21 05:35:25,157 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:35:25,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c [2022-07-21 05:35:25,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e1014dc7/0820c1b0b8ce4b4baa3b75e47506ed33/FLAGfe2bf5397 [2022-07-21 05:35:25,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e1014dc7/0820c1b0b8ce4b4baa3b75e47506ed33 [2022-07-21 05:35:25,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:35:25,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:35:25,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:35:25,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:35:25,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:35:25,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:35:25" (1/1) ... [2022-07-21 05:35:25,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab114be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:25, skipping insertion in model container [2022-07-21 05:35:25,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:35:25" (1/1) ... [2022-07-21 05:35:25,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:35:25,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:35:25,746 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] [2022-07-21 05:35:26,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:35:26,166 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:35:26,178 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] [2022-07-21 05:35:26,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:35:26,427 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:35:26,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:26 WrapperNode [2022-07-21 05:35:26,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:35:26,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:35:26,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:35:26,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:35:26,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:26" (1/1) ... [2022-07-21 05:35:26,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:26" (1/1) ... [2022-07-21 05:35:26,728 INFO L137 Inliner]: procedures = 60, calls = 2543, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4814 [2022-07-21 05:35:26,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:35:26,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:35:26,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:35:26,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:35:26,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:26" (1/1) ... [2022-07-21 05:35:26,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:26" (1/1) ... [2022-07-21 05:35:26,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:26" (1/1) ... [2022-07-21 05:35:26,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:26" (1/1) ... [2022-07-21 05:35:26,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:26" (1/1) ... [2022-07-21 05:35:26,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:26" (1/1) ... [2022-07-21 05:35:26,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:26" (1/1) ... [2022-07-21 05:35:27,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:35:27,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:35:27,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:35:27,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:35:27,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:26" (1/1) ... [2022-07-21 05:35:27,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:35:27,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:35:27,045 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) [2022-07-21 05:35:27,067 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 [2022-07-21 05:35:27,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:35:27,090 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-21 05:35:27,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-21 05:35:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-07-21 05:35:27,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-07-21 05:35:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 05:35:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-21 05:35:27,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-21 05:35:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-21 05:35:27,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-21 05:35:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-07-21 05:35:27,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-07-21 05:35:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-07-21 05:35:27,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-07-21 05:35:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 05:35:27,093 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-21 05:35:27,093 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-21 05:35:27,093 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-07-21 05:35:27,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-07-21 05:35:27,093 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-21 05:35:27,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-07-21 05:35:27,093 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-21 05:35:27,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-07-21 05:35:27,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 05:35:27,094 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-07-21 05:35:27,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-07-21 05:35:27,094 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-21 05:35:27,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-07-21 05:35:27,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 05:35:27,095 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-21 05:35:27,095 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-21 05:35:27,095 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-07-21 05:35:27,095 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-07-21 05:35:27,096 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-07-21 05:35:27,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-07-21 05:35:27,097 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 05:35:27,097 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 05:35:27,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:35:27,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:35:27,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:35:27,097 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-07-21 05:35:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-07-21 05:35:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-21 05:35:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-21 05:35:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-07-21 05:35:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-07-21 05:35:27,612 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:35:27,614 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:35:35,332 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:35:35,356 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:35:35,357 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 05:35:35,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:35:35 BoogieIcfgContainer [2022-07-21 05:35:35,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:35:35,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:35:35,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:35:35,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:35:35,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:35:25" (1/3) ... [2022-07-21 05:35:35,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbeff4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:35:35, skipping insertion in model container [2022-07-21 05:35:35,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:35:26" (2/3) ... [2022-07-21 05:35:35,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbeff4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:35:35, skipping insertion in model container [2022-07-21 05:35:35,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:35:35" (3/3) ... [2022-07-21 05:35:35,374 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M4-2.c [2022-07-21 05:35:35,388 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:35:35,389 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:35:35,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:35:35,500 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@596100f6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2e3241f2 [2022-07-21 05:35:35,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:35:35,510 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) [2022-07-21 05:35:35,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2022-07-21 05:35:35,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:35:35,589 INFO L195 NwaCegarLoop]: 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] [2022-07-21 05:35:35,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:35:35,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:35:35,596 INFO L85 PathProgramCache]: Analyzing trace with hash 502494177, now seen corresponding path program 1 times [2022-07-21 05:35:35,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:35:35,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515141612] [2022-07-21 05:35:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:35:35,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms