./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.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_d86457ff-d6c4-4dfe-aa61-76125037e877/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86457ff-d6c4-4dfe-aa61-76125037e877/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_d86457ff-d6c4-4dfe-aa61-76125037e877/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86457ff-d6c4-4dfe-aa61-76125037e877/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86457ff-d6c4-4dfe-aa61-76125037e877/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_d86457ff-d6c4-4dfe-aa61-76125037e877/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 1074202fec0087dade7e2e551bbdbc8477fa7ac87a060024146de6dec8d276ec --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:50:21,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:50:21,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:50:21,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:50:21,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:50:21,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:50:21,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:50:21,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:50:21,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:50:21,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:50:21,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:50:21,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:50:21,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:50:21,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:50:21,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:50:21,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:50:21,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:50:21,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:50:21,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:50:21,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:50:21,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:50:21,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:50:21,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:50:21,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:50:21,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:50:21,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:50:21,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:50:21,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:50:21,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:50:21,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:50:21,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:50:21,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:50:21,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:50:21,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:50:21,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:50:21,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:50:21,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:50:21,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:50:21,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:50:21,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:50:21,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:50:21,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86457ff-d6c4-4dfe-aa61-76125037e877/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:50:21,584 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:50:21,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:50:21,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:50:21,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:50:21,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:50:21,590 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:50:21,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:50:21,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:50:21,590 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:50:21,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:50:21,591 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:50:21,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:50:21,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:50:21,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:50:21,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:50:21,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:50:21,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:50:21,592 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:50:21,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:50:21,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:50:21,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:50:21,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:50:21,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:50:21,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:50:21,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:50:21,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:50:21,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:50:21,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:50:21,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:50:21,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:50:21,594 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:50:21,594 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:50:21,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:50:21,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:50:21,594 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_d86457ff-d6c4-4dfe-aa61-76125037e877/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86457ff-d6c4-4dfe-aa61-76125037e877/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1074202fec0087dade7e2e551bbdbc8477fa7ac87a060024146de6dec8d276ec [2021-12-07 00:50:21,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:50:21,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:50:21,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:50:21,790 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:50:21,791 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:50:21,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86457ff-d6c4-4dfe-aa61-76125037e877/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2021-12-07 00:50:21,841 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86457ff-d6c4-4dfe-aa61-76125037e877/bin/uautomizer-DrprNOufMa/data/34fa62e10/e6d2ae8093b74b83a715a92293dad5e2/FLAG19dcde427 [2021-12-07 00:50:22,433 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:50:22,433 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86457ff-d6c4-4dfe-aa61-76125037e877/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2021-12-07 00:50:22,460 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86457ff-d6c4-4dfe-aa61-76125037e877/bin/uautomizer-DrprNOufMa/data/34fa62e10/e6d2ae8093b74b83a715a92293dad5e2/FLAG19dcde427 [2021-12-07 00:50:22,875 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86457ff-d6c4-4dfe-aa61-76125037e877/bin/uautomizer-DrprNOufMa/data/34fa62e10/e6d2ae8093b74b83a715a92293dad5e2 [2021-12-07 00:50:22,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:50:22,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:50:22,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:50:22,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:50:22,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:50:22,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:50:22" (1/1) ... [2021-12-07 00:50:22,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539177a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:50:22, skipping insertion in model container [2021-12-07 00:50:22,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:50:22" (1/1) ... [2021-12-07 00:50:22,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:50:22,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:50:23,184 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_d86457ff-d6c4-4dfe-aa61-76125037e877/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c[2278,2291] [2021-12-07 00:50:23,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:50:23,851 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:50:23,861 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_d86457ff-d6c4-4dfe-aa61-76125037e877/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c[2278,2291] [2021-12-07 00:50:24,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:50:24,383 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:50:24,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:50:24 WrapperNode [2021-12-07 00:50:24,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:50:24,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:50:24,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:50:24,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:50:24,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:50:24" (1/1) ... [2021-12-07 00:50:24,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:50:24" (1/1) ... [2021-12-07 00:50:25,282 INFO L137 Inliner]: procedures = 62, calls = 18852, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 40945 [2021-12-07 00:50:25,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:50:25,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:50:25,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:50:25,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:50:25,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:50:24" (1/1) ... [2021-12-07 00:50:25,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:50:24" (1/1) ... [2021-12-07 00:50:25,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:50:24" (1/1) ... [2021-12-07 00:50:25,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:50:24" (1/1) ... [2021-12-07 00:50:25,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:50:24" (1/1) ... [2021-12-07 00:50:26,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:50:24" (1/1) ... [2021-12-07 00:50:26,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:50:24" (1/1) ... [2021-12-07 00:50:26,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:50:26,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:50:26,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:50:26,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:50:26,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:50:24" (1/1) ... [2021-12-07 00:50:26,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:50:26,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86457ff-d6c4-4dfe-aa61-76125037e877/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:50:26,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86457ff-d6c4-4dfe-aa61-76125037e877/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:50:26,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86457ff-d6c4-4dfe-aa61-76125037e877/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:50:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:50:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-12-07 00:50:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-12-07 00:50:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2021-12-07 00:50:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2021-12-07 00:50:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:50:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-12-07 00:50:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-12-07 00:50:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-12-07 00:50:26,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-12-07 00:50:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2021-12-07 00:50:26,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2021-12-07 00:50:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2021-12-07 00:50:26,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2021-12-07 00:50:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:50:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-12-07 00:50:26,374 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-12-07 00:50:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2021-12-07 00:50:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2021-12-07 00:50:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-07 00:50:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2021-12-07 00:50:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-07 00:50:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2021-12-07 00:50:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:50:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-07 00:50:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2021-12-07 00:50:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:50:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-07 00:50:26,376 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-07 00:50:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2021-12-07 00:50:26,376 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2021-12-07 00:50:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2021-12-07 00:50:26,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2021-12-07 00:50:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-07 00:50:26,376 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-07 00:50:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:50:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:50:26,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:50:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2021-12-07 00:50:26,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2021-12-07 00:50:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-12-07 00:50:26,377 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-12-07 00:50:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2021-12-07 00:50:26,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2021-12-07 00:50:27,512 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:50:27,513 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:51:03,614 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:51:03,656 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:51:03,656 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 00:51:03,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:51:03 BoogieIcfgContainer [2021-12-07 00:51:03,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:51:03,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:51:03,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:51:03,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:51:03,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:50:22" (1/3) ... [2021-12-07 00:51:03,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536cdf64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:51:03, skipping insertion in model container [2021-12-07 00:51:03,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:50:24" (2/3) ... [2021-12-07 00:51:03,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536cdf64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:51:03, skipping insertion in model container [2021-12-07 00:51:03,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:51:03" (3/3) ... [2021-12-07 00:51:03,672 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M4-2.c [2021-12-07 00:51:03,676 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:51:03,676 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:51:03,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:51:03,742 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 [2021-12-07 00:51:03,742 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:51:03,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 12489 states, 8126 states have (on average 1.311469357617524) internal successors, (10657), 8239 states have internal predecessors, (10657), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4343), 4341 states have call predecessors, (4343), 4343 states have call successors, (4343) [2021-12-07 00:51:04,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5259 [2021-12-07 00:51:04,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:51:04,283 INFO L514 BasicCegarLoop]: trace histogram [444, 444, 444, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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00:51:04,283 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:51:04,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:51:04,290 INFO L85 PathProgramCache]: Analyzing trace with hash 411216939, now seen corresponding path program 1 times [2021-12-07 00:51:04,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:51:04,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639741950] [2021-12-07 00:51:04,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:51:04,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms