./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc --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 0cc4860b4f5a0d0365cbcd156b11008fe087fa6dc867cdd4b4d117ba6b8a4a03 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:03:52,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:03:52,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:03:52,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:03:52,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:03:52,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:03:52,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:03:52,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:03:52,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:03:52,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:03:52,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:03:52,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:03:52,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:03:52,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:03:52,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:03:52,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:03:52,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:03:52,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:03:52,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:03:52,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:03:52,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:03:52,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:03:52,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:03:52,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:03:52,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:03:52,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:03:52,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:03:52,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:03:52,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:03:52,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:03:52,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:03:52,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:03:52,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:03:52,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:03:52,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:03:52,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:03:52,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:03:52,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:03:52,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:03:52,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:03:52,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:03:52,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:03:52,920 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:03:52,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:03:52,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:03:52,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:03:52,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:03:52,923 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:03:52,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:03:52,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:03:52,925 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:03:52,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:03:52,926 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:03:52,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:03:52,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:03:52,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:03:52,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:03:52,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:03:52,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:03:52,928 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:03:52,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:03:52,929 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:03:52,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:03:52,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:03:52,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:03:52,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:03:52,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:52,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:03:52,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:03:52,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:03:52,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:03:52,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:03:52,932 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:03:52,932 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:03:52,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:03:52,933 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_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cc4860b4f5a0d0365cbcd156b11008fe087fa6dc867cdd4b4d117ba6b8a4a03 [2022-11-02 21:03:53,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:03:53,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:03:53,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:03:53,285 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:03:53,286 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:03:53,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-1.c [2022-11-02 21:03:53,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc/data/a5a62d39c/896d76c0c9964dc89950f3d623eb06cb/FLAG2a8ccb0c2 [2022-11-02 21:03:54,346 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:03:54,348 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-1.c [2022-11-02 21:03:54,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc/data/a5a62d39c/896d76c0c9964dc89950f3d623eb06cb/FLAG2a8ccb0c2 [2022-11-02 21:03:54,827 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc/data/a5a62d39c/896d76c0c9964dc89950f3d623eb06cb [2022-11-02 21:03:54,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:03:54,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:03:54,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:54,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:03:54,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:03:54,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:54" (1/1) ... [2022-11-02 21:03:54,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@496ef6e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:54, skipping insertion in model container [2022-11-02 21:03:54,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:54" (1/1) ... [2022-11-02 21:03:54,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:03:55,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:55,384 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_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-1.c[2216,2229] [2022-11-02 21:03:56,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:56,570 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:03:56,587 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_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.2-1.c[2216,2229] [2022-11-02 21:03:57,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:57,286 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:03:57,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:57 WrapperNode [2022-11-02 21:03:57,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:57,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:57,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:03:57,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:03:57,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:57" (1/1) ... [2022-11-02 21:03:57,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:57" (1/1) ... [2022-11-02 21:03:58,409 INFO L138 Inliner]: procedures = 101, calls = 6643, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 21156 [2022-11-02 21:03:58,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:58,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:03:58,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:03:58,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:03:58,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:57" (1/1) ... [2022-11-02 21:03:58,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:57" (1/1) ... [2022-11-02 21:03:58,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:57" (1/1) ... [2022-11-02 21:03:58,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:57" (1/1) ... [2022-11-02 21:03:59,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:57" (1/1) ... [2022-11-02 21:03:59,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:57" (1/1) ... [2022-11-02 21:03:59,371 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:57" (1/1) ... [2022-11-02 21:03:59,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:57" (1/1) ... [2022-11-02 21:03:59,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:03:59,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:03:59,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:03:59,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:03:59,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:57" (1/1) ... [2022-11-02 21:03:59,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:59,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:59,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:03:59,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94f219f5-a2f7-4d5c-b93f-d4033f36dc8d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:03:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-11-02 21:03:59,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-11-02 21:03:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-11-02 21:03:59,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-11-02 21:03:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:03:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-11-02 21:03:59,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-11-02 21:03:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-02 21:03:59,882 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-02 21:03:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-11-02 21:03:59,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-11-02 21:03:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-11-02 21:03:59,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-11-02 21:03:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-11-02 21:03:59,886 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-11-02 21:03:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-11-02 21:03:59,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-11-02 21:03:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-11-02 21:03:59,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-11-02 21:03:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:03:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-02 21:03:59,888 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-02 21:03:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-11-02 21:03:59,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-11-02 21:03:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-11-02 21:03:59,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-11-02 21:03:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-11-02 21:03:59,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-11-02 21:03:59,895 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-11-02 21:03:59,895 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-11-02 21:03:59,895 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-11-02 21:03:59,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-11-02 21:03:59,896 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-02 21:03:59,896 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-02 21:03:59,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:03:59,897 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-02 21:03:59,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-02 21:03:59,897 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-11-02 21:03:59,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-11-02 21:03:59,898 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-11-02 21:03:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-11-02 21:03:59,898 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-11-02 21:03:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-11-02 21:03:59,899 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-02 21:03:59,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-02 21:03:59,899 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-11-02 21:03:59,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-11-02 21:03:59,899 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-02 21:03:59,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-02 21:03:59,900 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-11-02 21:03:59,900 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-11-02 21:03:59,900 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-11-02 21:03:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-11-02 21:03:59,901 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-11-02 21:03:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-11-02 21:03:59,901 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-11-02 21:03:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-11-02 21:03:59,902 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-11-02 21:03:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-11-02 21:03:59,902 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-11-02 21:03:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-11-02 21:03:59,903 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-02 21:03:59,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-02 21:03:59,903 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-11-02 21:03:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-11-02 21:03:59,904 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-11-02 21:03:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-11-02 21:03:59,904 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-11-02 21:03:59,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-11-02 21:03:59,905 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-11-02 21:03:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-11-02 21:03:59,905 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-11-02 21:03:59,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-11-02 21:03:59,906 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-11-02 21:03:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-11-02 21:03:59,906 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-11-02 21:03:59,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-11-02 21:03:59,907 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-11-02 21:03:59,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-11-02 21:03:59,907 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-11-02 21:03:59,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-11-02 21:03:59,908 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-11-02 21:03:59,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-11-02 21:03:59,908 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-11-02 21:03:59,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-11-02 21:03:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_nxtcolorsensor_mode [2022-11-02 21:03:59,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_nxtcolorsensor_mode [2022-11-02 21:03:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:03:59,909 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-11-02 21:03:59,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-11-02 21:03:59,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:03:59,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:04:01,195 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:04:01,198 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:07:18,291 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:07:18,362 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:07:18,362 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 21:07:18,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:18 BoogieIcfgContainer [2022-11-02 21:07:18,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:07:18,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:07:18,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:07:18,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:07:18,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:03:54" (1/3) ... [2022-11-02 21:07:18,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0b41cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:18, skipping insertion in model container [2022-11-02 21:07:18,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:57" (2/3) ... [2022-11-02 21:07:18,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0b41cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:18, skipping insertion in model container [2022-11-02 21:07:18,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:18" (3/3) ... [2022-11-02 21:07:18,386 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_ctm.2-1.c [2022-11-02 21:07:18,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:07:18,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:07:18,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:07:18,574 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4a76e1f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:07:18,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:07:18,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 4809 states, 4424 states have (on average 1.5476943942133816) internal successors, (6847), 4448 states have internal predecessors, (6847), 340 states have call successors, (340), 43 states have call predecessors, (340), 43 states have return successors, (340), 330 states have call predecessors, (340), 340 states have call successors, (340) [2022-11-02 21:07:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1934 [2022-11-02 21:07:18,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:18,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:18,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:18,834 INFO L85 PathProgramCache]: Analyzing trace with hash -297338650, now seen corresponding path program 1 times [2022-11-02 21:07:18,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:18,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184585912] [2022-11-02 21:07:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:18,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms