./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa --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-hotfix-svcomp22-839c364 [2021-12-06 19:16:50,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:16:50,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:16:50,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:16:50,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:16:50,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:16:50,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:16:50,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:16:50,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:16:50,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:16:50,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:16:50,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:16:50,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:16:50,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:16:50,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:16:50,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:16:50,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:16:50,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:16:50,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:16:50,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:16:50,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:16:50,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:16:50,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:16:50,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:16:50,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:16:50,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:16:50,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:16:50,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:16:50,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:16:50,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:16:50,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:16:50,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:16:50,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:16:50,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:16:50,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:16:50,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:16:50,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:16:50,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:16:50,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:16:50,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:16:50,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:16:50,974 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:16:50,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:16:50,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:16:50,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:16:50,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:16:50,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:16:50,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:16:50,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:16:50,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:16:50,992 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:16:50,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:16:50,992 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:16:50,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:16:50,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:16:50,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:16:50,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:16:50,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:16:50,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:16:50,993 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:16:50,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:16:50,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:16:50,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:16:50,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:16:50,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:16:50,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:16:50,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:16:50,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:16:50,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:16:50,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:16:50,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:16:50,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:16:50,995 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:16:50,995 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:16:50,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:16:50,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:16:50,995 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5816b6ee4c54982d6c4f363e51f69070026ee50b2ef95cedbe859f62dcbecd24 [2021-12-06 19:16:51,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:16:51,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:16:51,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:16:51,209 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:16:51,210 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:16:51,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c [2021-12-06 19:16:51,251 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa/data/3c7b60892/7822f9ec01ae4adf9d96ef29f5af59a5/FLAG11800a97e [2021-12-06 19:16:51,709 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:16:51,710 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c [2021-12-06 19:16:51,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa/data/3c7b60892/7822f9ec01ae4adf9d96ef29f5af59a5/FLAG11800a97e [2021-12-06 19:16:51,738 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa/data/3c7b60892/7822f9ec01ae4adf9d96ef29f5af59a5 [2021-12-06 19:16:51,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:16:51,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:16:51,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:16:51,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:16:51,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:16:51,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:16:51" (1/1) ... [2021-12-06 19:16:51,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598a573d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:16:51, skipping insertion in model container [2021-12-06 19:16:51,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:16:51" (1/1) ... [2021-12-06 19:16:51,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:16:51,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:16:51,965 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c[1762,1775] [2021-12-06 19:16:52,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:16:52,263 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:16:52,273 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M4.c[1762,1775] [2021-12-06 19:16:52,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:16:52,455 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:16:52,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:16:52 WrapperNode [2021-12-06 19:16:52,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:16:52,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:16:52,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:16:52,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:16:52,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:16:52" (1/1) ... [2021-12-06 19:16:52,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:16:52" (1/1) ... [2021-12-06 19:16:52,627 INFO L137 Inliner]: procedures = 60, calls = 2543, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4814 [2021-12-06 19:16:52,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:16:52,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:16:52,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:16:52,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:16:52,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:16:52" (1/1) ... [2021-12-06 19:16:52,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:16:52" (1/1) ... [2021-12-06 19:16:52,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:16:52" (1/1) ... [2021-12-06 19:16:52,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:16:52" (1/1) ... [2021-12-06 19:16:52,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:16:52" (1/1) ... [2021-12-06 19:16:52,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:16:52" (1/1) ... [2021-12-06 19:16:52,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:16:52" (1/1) ... [2021-12-06 19:16:52,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:16:52,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:16:52,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:16:52,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:16:52,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:16:52" (1/1) ... [2021-12-06 19:16:52,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:16:52,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:16:52,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:16:52,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1697a358-aebe-401e-a301-092f4ae018e1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:16:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:16:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-06 19:16:52,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-06 19:16:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-06 19:16:52,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-06 19:16:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:16:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-06 19:16:52,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-06 19:16:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-06 19:16:52,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-06 19:16:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2021-12-06 19:16:52,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2021-12-06 19:16:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-06 19:16:52,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-06 19:16:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:16:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-06 19:16:52,831 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-06 19:16:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-06 19:16:52,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-06 19:16:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-06 19:16:52,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-06 19:16:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-06 19:16:52,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-06 19:16:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:16:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2021-12-06 19:16:52,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2021-12-06 19:16:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-06 19:16:52,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-06 19:16:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:16:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-06 19:16:52,832 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-06 19:16:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-06 19:16:52,832 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-06 19:16:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-06 19:16:52,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-06 19:16:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 19:16:52,832 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 19:16:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:16:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:16:52,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:16:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-06 19:16:52,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-06 19:16:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-06 19:16:52,833 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-06 19:16:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-06 19:16:52,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-06 19:16:53,135 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:16:53,137 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:17:00,090 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:17:00,122 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:17:00,122 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 19:17:00,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:17:00 BoogieIcfgContainer [2021-12-06 19:17:00,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:17:00,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:17:00,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:17:00,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:17:00,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:16:51" (1/3) ... [2021-12-06 19:17:00,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4ee382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:17:00, skipping insertion in model container [2021-12-06 19:17:00,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:16:52" (2/3) ... [2021-12-06 19:17:00,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4ee382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:17:00, skipping insertion in model container [2021-12-06 19:17:00,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:17:00" (3/3) ... [2021-12-06 19:17:00,132 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.3.M4.c [2021-12-06 19:17:00,137 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:17:00,138 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:17:00,198 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:17:00,204 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:17:00,205 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:17:00,268 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) [2021-12-06 19:17:00,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2021-12-06 19:17:00,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:17:00,320 INFO L514 BasicCegarLoop]: trace histogram [209, 209, 209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:17:00,321 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:17:00,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:17:00,325 INFO L85 PathProgramCache]: Analyzing trace with hash 502494177, now seen corresponding path program 1 times [2021-12-06 19:17:00,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:17:00,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741782902] [2021-12-06 19:17:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:17:00,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms