./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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.3.M4.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 5816b6ee4c54982d6c4f363e51f69070026ee50b2ef95cedbe859f62dcbecd24 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 18:38:00,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 18:38:00,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 18:38:00,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 18:38:00,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 18:38:00,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 18:38:00,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 18:38:00,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 18:38:00,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 18:38:00,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 18:38:00,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 18:38:00,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 18:38:00,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 18:38:00,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 18:38:00,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 18:38:00,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 18:38:00,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 18:38:00,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 18:38:00,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 18:38:00,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 18:38:00,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 18:38:00,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 18:38:00,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 18:38:00,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 18:38:00,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 18:38:01,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 18:38:01,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 18:38:01,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 18:38:01,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 18:38:01,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 18:38:01,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 18:38:01,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 18:38:01,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 18:38:01,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 18:38:01,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 18:38:01,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 18:38:01,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 18:38:01,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 18:38:01,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 18:38:01,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 18:38:01,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 18:38:01,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 18:38:01,034 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 18:38:01,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 18:38:01,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 18:38:01,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 18:38:01,038 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 18:38:01,038 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 18:38:01,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 18:38:01,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 18:38:01,039 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 18:38:01,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 18:38:01,040 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 18:38:01,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 18:38:01,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 18:38:01,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 18:38:01,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 18:38:01,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 18:38:01,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 18:38:01,041 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 18:38:01,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 18:38:01,041 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 18:38:01,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 18:38:01,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 18:38:01,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 18:38:01,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 18:38:01,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 18:38:01,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 18:38:01,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 18:38:01,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 18:38:01,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 18:38:01,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 18:38:01,043 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 18:38:01,043 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 18:38:01,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 18:38:01,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5816b6ee4c54982d6c4f363e51f69070026ee50b2ef95cedbe859f62dcbecd24 [2022-02-20 18:38:01,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 18:38:01,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 18:38:01,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 18:38:01,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 18:38:01,263 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 18:38:01,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c [2022-02-20 18:38:01,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de66a0085/3f8ff731ea3e4e79aa1a1da5b6a07ab8/FLAG30304a264 [2022-02-20 18:38:01,774 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 18:38:01,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c [2022-02-20 18:38:01,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de66a0085/3f8ff731ea3e4e79aa1a1da5b6a07ab8/FLAG30304a264 [2022-02-20 18:38:01,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de66a0085/3f8ff731ea3e4e79aa1a1da5b6a07ab8 [2022-02-20 18:38:01,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 18:38:01,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 18:38:01,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 18:38:01,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 18:38:01,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 18:38:01,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 06:38:01" (1/1) ... [2022-02-20 18:38:01,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459b9801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:38:01, skipping insertion in model container [2022-02-20 18:38:01,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 06:38:01" (1/1) ... [2022-02-20 18:38:01,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 18:38:01,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 18:38:02,139 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.3.M4.c[1762,1775] [2022-02-20 18:38:02,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 18:38:02,528 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 18:38:02,537 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.3.M4.c[1762,1775] [2022-02-20 18:38:02,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 18:38:02,741 INFO L208 MainTranslator]: Completed translation [2022-02-20 18:38:02,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:38:02 WrapperNode [2022-02-20 18:38:02,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 18:38:02,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 18:38:02,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 18:38:02,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 18:38:02,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:38:02" (1/1) ... [2022-02-20 18:38:02,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:38:02" (1/1) ... [2022-02-20 18:38:03,005 INFO L137 Inliner]: procedures = 60, calls = 2543, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4814 [2022-02-20 18:38:03,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 18:38:03,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 18:38:03,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 18:38:03,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 18:38:03,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:38:02" (1/1) ... [2022-02-20 18:38:03,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:38:02" (1/1) ... [2022-02-20 18:38:03,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:38:02" (1/1) ... [2022-02-20 18:38:03,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:38:02" (1/1) ... [2022-02-20 18:38:03,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:38:02" (1/1) ... [2022-02-20 18:38:03,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:38:02" (1/1) ... [2022-02-20 18:38:03,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:38:02" (1/1) ... [2022-02-20 18:38:03,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 18:38:03,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 18:38:03,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 18:38:03,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 18:38:03,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:38:02" (1/1) ... [2022-02-20 18:38:03,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 18:38:03,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 18:38:03,237 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) [2022-02-20 18:38:03,304 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 [2022-02-20 18:38:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 18:38:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-02-20 18:38:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-02-20 18:38:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-02-20 18:38:03,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-02-20 18:38:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 18:38:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-02-20 18:38:03,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-02-20 18:38:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-02-20 18:38:03,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-02-20 18:38:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-02-20 18:38:03,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-02-20 18:38:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-02-20 18:38:03,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-02-20 18:38:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-20 18:38:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-02-20 18:38:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-02-20 18:38:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-02-20 18:38:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-02-20 18:38:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-02-20 18:38:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-02-20 18:38:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-02-20 18:38:03,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-02-20 18:38:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 18:38:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-02-20 18:38:03,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-02-20 18:38:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-02-20 18:38:03,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-02-20 18:38:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-20 18:38:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-02-20 18:38:03,349 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-02-20 18:38:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-02-20 18:38:03,349 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-02-20 18:38:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-02-20 18:38:03,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-02-20 18:38:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-20 18:38:03,350 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-20 18:38:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 18:38:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 18:38:03,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 18:38:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-02-20 18:38:03,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-02-20 18:38:03,351 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-02-20 18:38:03,351 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-02-20 18:38:03,351 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-02-20 18:38:03,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-02-20 18:38:03,741 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 18:38:03,742 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 18:38:10,366 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 18:38:10,380 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 18:38:10,381 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 18:38:10,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:38:10 BoogieIcfgContainer [2022-02-20 18:38:10,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 18:38:10,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 18:38:10,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 18:38:10,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 18:38:10,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 06:38:01" (1/3) ... [2022-02-20 18:38:10,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7a75bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 06:38:10, skipping insertion in model container [2022-02-20 18:38:10,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 06:38:02" (2/3) ... [2022-02-20 18:38:10,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7a75bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 06:38:10, skipping insertion in model container [2022-02-20 18:38:10,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 06:38:10" (3/3) ... [2022-02-20 18:38:10,388 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.3.M4.c [2022-02-20 18:38:10,391 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 18:38:10,392 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 18:38:10,424 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 18:38:10,428 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 [2022-02-20 18:38:10,428 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 18:38:10,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 1944 states, 1149 states have (on average 1.2027850304612706) internal successors, (1382), 1153 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) [2022-02-20 18:38:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2022-02-20 18:38:10,589 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 18:38:10,590 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] [2022-02-20 18:38:10,591 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 18:38:10,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 18:38:10,595 INFO L85 PathProgramCache]: Analyzing trace with hash 502494177, now seen corresponding path program 1 times [2022-02-20 18:38:10,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 18:38:10,602 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532709664] [2022-02-20 18:38:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 18:38:10,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms