./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_ctm.3-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c11dfbc24d8e2936a0720b93d6e580e096b076c7149ef4cbc8369f1ef818941 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:12:39,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:12:39,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:12:39,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:12:39,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:12:39,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:12:39,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:12:39,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:12:39,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:12:39,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:12:39,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:12:39,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:12:39,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:12:39,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:12:39,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:12:39,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:12:39,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:12:39,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:12:39,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:12:39,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:12:39,912 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:12:39,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:12:39,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:12:39,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:12:39,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:12:39,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:12:39,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:12:39,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:12:39,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:12:39,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:12:39,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:12:39,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:12:39,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:12:39,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:12:39,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:12:39,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:12:39,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:12:39,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:12:39,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:12:39,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:12:39,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:12:39,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:12:39,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:12:39,988 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:12:39,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:12:39,989 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:12:39,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:12:39,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:12:39,990 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:12:39,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:12:39,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:12:39,990 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:12:39,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:12:39,991 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:12:39,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:12:39,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:12:39,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:12:39,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:12:39,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:12:39,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:12:39,992 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:12:39,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:12:39,992 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:12:39,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:12:39,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:12:39,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:12:39,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:12:39,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:12:39,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:12:39,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:12:39,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:12:39,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:12:39,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:12:39,994 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:12:39,994 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:12:39,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:12:39,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c11dfbc24d8e2936a0720b93d6e580e096b076c7149ef4cbc8369f1ef818941 [2022-07-22 18:12:40,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:12:40,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:12:40,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:12:40,439 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:12:40,448 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:12:40,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c [2022-07-22 18:12:40,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18be32d8c/e9bbce00cc554c93a00a146455bef3fa/FLAG181dfe4d2 [2022-07-22 18:12:41,373 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:12:41,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c [2022-07-22 18:12:41,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18be32d8c/e9bbce00cc554c93a00a146455bef3fa/FLAG181dfe4d2 [2022-07-22 18:12:41,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18be32d8c/e9bbce00cc554c93a00a146455bef3fa [2022-07-22 18:12:41,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:12:41,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:12:41,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:12:41,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:12:41,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:12:41,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:12:41" (1/1) ... [2022-07-22 18:12:41,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a66a257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:12:41, skipping insertion in model container [2022-07-22 18:12:41,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:12:41" (1/1) ... [2022-07-22 18:12:41,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:12:41,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:12:41,845 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_ctm.3-1.c[1870,1883] [2022-07-22 18:12:42,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:12:42,716 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:12:42,730 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_ctm.3-1.c[1870,1883] [2022-07-22 18:12:43,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:12:43,135 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:12:43,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:12:43 WrapperNode [2022-07-22 18:12:43,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:12:43,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:12:43,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:12:43,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:12:43,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:12:43" (1/1) ... [2022-07-22 18:12:43,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:12:43" (1/1) ... [2022-07-22 18:12:43,399 INFO L137 Inliner]: procedures = 99, calls = 2816, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8376 [2022-07-22 18:12:43,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:12:43,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:12:43,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:12:43,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:12:43,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:12:43" (1/1) ... [2022-07-22 18:12:43,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:12:43" (1/1) ... [2022-07-22 18:12:43,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:12:43" (1/1) ... [2022-07-22 18:12:43,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:12:43" (1/1) ... [2022-07-22 18:12:43,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:12:43" (1/1) ... [2022-07-22 18:12:43,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:12:43" (1/1) ... [2022-07-22 18:12:43,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:12:43" (1/1) ... [2022-07-22 18:12:43,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:12:43,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:12:43,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:12:43,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:12:43,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:12:43" (1/1) ... [2022-07-22 18:12:43,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:12:43,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:12:43,741 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) [2022-07-22 18:12:43,794 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 [2022-07-22 18:12:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-07-22 18:12:43,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-07-22 18:12:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-07-22 18:12:43,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-07-22 18:12:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 18:12:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-07-22 18:12:43,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-07-22 18:12:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-07-22 18:12:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-07-22 18:12:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-07-22 18:12:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-07-22 18:12:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-07-22 18:12:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-07-22 18:12:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-07-22 18:12:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-07-22 18:12:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-07-22 18:12:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-07-22 18:12:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-07-22 18:12:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-07-22 18:12:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-07-22 18:12:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-07-22 18:12:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 18:12:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-22 18:12:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-22 18:12:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-07-22 18:12:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-07-22 18:12:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-07-22 18:12:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-07-22 18:12:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-07-22 18:12:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-07-22 18:12:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-07-22 18:12:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-07-22 18:12:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-07-22 18:12:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-07-22 18:12:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-07-22 18:12:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-07-22 18:12:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:12:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-07-22 18:12:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-07-22 18:12:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-07-22 18:12:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-07-22 18:12:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-07-22 18:12:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-07-22 18:12:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-07-22 18:12:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-07-22 18:12:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-07-22 18:12:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-07-22 18:12:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-07-22 18:12:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-07-22 18:12:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-07-22 18:12:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-07-22 18:12:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-07-22 18:12:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-07-22 18:12:43,824 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-07-22 18:12:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-07-22 18:12:43,824 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-07-22 18:12:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-07-22 18:12:43,824 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-07-22 18:12:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-07-22 18:12:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-07-22 18:12:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-07-22 18:12:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-07-22 18:12:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-07-22 18:12:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-07-22 18:12:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-07-22 18:12:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-07-22 18:12:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-07-22 18:12:43,826 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-07-22 18:12:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-07-22 18:12:43,826 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-07-22 18:12:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-07-22 18:12:43,826 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-07-22 18:12:43,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-07-22 18:12:43,826 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-07-22 18:12:43,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-07-22 18:12:43,827 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-07-22 18:12:43,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-07-22 18:12:43,827 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-07-22 18:12:43,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-07-22 18:12:43,827 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-07-22 18:12:43,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-07-22 18:12:43,827 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-07-22 18:12:43,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-07-22 18:12:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-07-22 18:12:43,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-07-22 18:12:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-07-22 18:12:43,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-07-22 18:12:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-07-22 18:12:43,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-07-22 18:12:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:12:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-07-22 18:12:43,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-07-22 18:12:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:12:43,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:12:44,259 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:12:44,328 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:13:00,871 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:13:00,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:13:00,913 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-22 18:13:00,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:13:00 BoogieIcfgContainer [2022-07-22 18:13:00,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:13:00,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:13:00,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:13:00,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:13:00,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:12:41" (1/3) ... [2022-07-22 18:13:00,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ebc2e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:13:00, skipping insertion in model container [2022-07-22 18:13:00,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:12:43" (2/3) ... [2022-07-22 18:13:00,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ebc2e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:13:00, skipping insertion in model container [2022-07-22 18:13:00,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:13:00" (3/3) ... [2022-07-22 18:13:00,941 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_ctm.3-1.c [2022-07-22 18:13:00,952 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:13:00,952 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:13:01,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:13:01,122 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@4646f01e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4ed0e740 [2022-07-22 18:13:01,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:13:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2113 states have (on average 1.4803596781826787) internal successors, (3128), 2137 states have internal predecessors, (3128), 306 states have call successors, (306), 44 states have call predecessors, (306), 44 states have return successors, (306), 296 states have call predecessors, (306), 306 states have call successors, (306) [2022-07-22 18:13:01,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-22 18:13:01,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:13:01,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:13:01,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:13:01,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:13:01,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1381223433, now seen corresponding path program 1 times [2022-07-22 18:13:01,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:13:01,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808512486] [2022-07-22 18:13:01,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:13:01,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms