./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.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_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/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_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/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_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/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 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:45:42,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:45:42,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:45:42,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:45:42,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:45:42,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:45:42,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:45:42,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:45:42,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:45:42,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:45:42,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:45:42,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:45:42,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:45:42,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:45:42,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:45:42,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:45:42,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:45:42,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:45:42,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:45:42,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:45:42,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:45:42,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:45:42,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:45:42,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:45:42,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:45:42,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:45:42,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:45:42,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:45:42,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:45:42,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:45:42,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:45:42,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:45:42,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:45:42,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:45:42,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:45:42,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:45:42,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:45:42,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:45:42,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:45:42,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:45:42,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:45:42,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:45:42,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:45:42,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:45:42,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:45:42,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:45:42,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:45:42,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:45:42,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:45:42,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:45:42,889 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:45:42,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:45:42,889 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:45:42,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:45:42,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:45:42,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:45:42,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:45:42,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:45:42,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:45:42,890 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:45:42,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:45:42,890 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:45:42,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:45:42,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:45:42,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:45:42,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:45:42,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:45:42,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:45:42,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:45:42,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:45:42,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:45:42,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:45:42,892 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:45:42,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:45:42,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:45:42,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:45:42,892 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_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 [2021-12-06 17:45:43,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:45:43,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:45:43,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:45:43,081 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:45:43,082 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:45:43,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2021-12-06 17:45:43,122 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/bin/uautomizer-DrprNOufMa/data/5794b7535/f4f446e1200c46c98ee41cea7dbae43f/FLAG5d9682040 [2021-12-06 17:45:43,749 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:45:43,749 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2021-12-06 17:45:43,775 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/bin/uautomizer-DrprNOufMa/data/5794b7535/f4f446e1200c46c98ee41cea7dbae43f/FLAG5d9682040 [2021-12-06 17:45:43,900 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/bin/uautomizer-DrprNOufMa/data/5794b7535/f4f446e1200c46c98ee41cea7dbae43f [2021-12-06 17:45:43,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:45:43,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:45:43,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:45:43,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:45:43,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:45:43,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:45:43" (1/1) ... [2021-12-06 17:45:43,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@91d5ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:43, skipping insertion in model container [2021-12-06 17:45:43,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:45:43" (1/1) ... [2021-12-06 17:45:43,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:45:44,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:45:44,267 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_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c[1673,1686] [2021-12-06 17:45:44,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:45:44,912 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:45:44,921 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_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c[1673,1686] [2021-12-06 17:45:45,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:45:45,524 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:45:45,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:45 WrapperNode [2021-12-06 17:45:45,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:45:45,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:45:45,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:45:45,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:45:45,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:45" (1/1) ... [2021-12-06 17:45:45,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:45" (1/1) ... [2021-12-06 17:45:46,322 INFO L137 Inliner]: procedures = 57, calls = 17866, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39403 [2021-12-06 17:45:46,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:45:46,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:45:46,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:45:46,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:45:46,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:45" (1/1) ... [2021-12-06 17:45:46,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:45" (1/1) ... [2021-12-06 17:45:46,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:45" (1/1) ... [2021-12-06 17:45:46,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:45" (1/1) ... [2021-12-06 17:45:46,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:45" (1/1) ... [2021-12-06 17:45:46,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:45" (1/1) ... [2021-12-06 17:45:47,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:45" (1/1) ... [2021-12-06 17:45:47,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:45:47,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:45:47,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:45:47,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:45:47,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:45" (1/1) ... [2021-12-06 17:45:47,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:45:47,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:45:47,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:45:47,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57faa33-ce17-41d6-a9a7-d74cdb85dea9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:45:47,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:45:47,256 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-06 17:45:47,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-06 17:45:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-06 17:45:47,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-06 17:45:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:45:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-06 17:45:47,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-06 17:45:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-06 17:45:47,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-06 17:45:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-06 17:45:47,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-06 17:45:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 17:45:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-06 17:45:47,257 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-06 17:45:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-06 17:45:47,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-06 17:45:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-06 17:45:47,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-06 17:45:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-06 17:45:47,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-06 17:45:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:45:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-06 17:45:47,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-06 17:45:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 17:45:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-06 17:45:47,258 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-06 17:45:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 17:45:47,258 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 17:45:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:45:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:45:47,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:45:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-06 17:45:47,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-06 17:45:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-06 17:45:47,259 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-06 17:45:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-06 17:45:47,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-06 17:45:48,266 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:45:48,268 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:46:37,924 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:46:37,971 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:46:37,971 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:46:37,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:46:37 BoogieIcfgContainer [2021-12-06 17:46:37,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:46:37,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:46:37,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:46:37,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:46:37,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:45:43" (1/3) ... [2021-12-06 17:46:37,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa3cbde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:46:37, skipping insertion in model container [2021-12-06 17:46:37,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:45:45" (2/3) ... [2021-12-06 17:46:37,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa3cbde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:46:37, skipping insertion in model container [2021-12-06 17:46:37,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:46:37" (3/3) ... [2021-12-06 17:46:37,987 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-1.c [2021-12-06 17:46:37,991 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:46:37,991 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:46:38,053 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:46:38,058 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 17:46:38,058 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:46:38,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 12013 states, 7878 states have (on average 1.3196242701193197) internal successors, (10396), 7991 states have internal predecessors, (10396), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) [2021-12-06 17:46:38,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2021-12-06 17:46:38,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:46:38,548 INFO L514 BasicCegarLoop]: trace histogram [337, 337, 337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1] [2021-12-06 17:46:38,548 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:46:38,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:46:38,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1611338198, now seen corresponding path program 1 times [2021-12-06 17:46:38,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:46:38,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767505732] [2021-12-06 17:46:38,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:46:38,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms