./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 687a1636a89f1fab4c90438b5af97b62d434d4fc2275ba6796fa2a6782584d1d --- 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-2329fc7 [2022-12-14 12:32:30,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:32:30,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:32:30,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:32:30,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:32:30,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:32:30,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:32:30,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:32:30,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:32:30,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:32:30,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:32:30,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:32:30,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:32:30,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:32:30,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:32:30,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:32:30,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:32:30,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:32:30,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:32:30,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:32:30,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:32:30,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:32:30,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:32:30,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:32:30,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:32:30,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:32:30,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:32:30,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:32:30,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:32:30,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:32:30,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:32:30,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:32:30,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:32:30,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:32:30,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:32:30,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:32:30,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:32:30,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:32:30,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:32:30,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:32:30,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:32:30,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:32:30,935 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:32:30,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:32:30,936 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:32:30,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:32:30,937 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:32:30,937 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:32:30,937 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:32:30,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:32:30,937 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:32:30,938 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:32:30,941 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:32:30,942 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:32:30,942 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:32:30,942 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:32:30,942 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:32:30,942 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:32:30,943 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:32:30,943 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:32:30,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:32:30,944 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:32:30,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:32:30,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:32:30,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:32:30,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:32:30,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:32:30,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:32:30,945 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:32:30,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:32:30,945 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:32:30,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:32:30,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:32:30,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:32:30,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:32:30,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:32:30,946 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:32:30,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:32:30,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:32:30,946 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:32:30,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:32:30,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:32:30,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:32:30,947 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_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 687a1636a89f1fab4c90438b5af97b62d434d4fc2275ba6796fa2a6782584d1d [2022-12-14 12:32:31,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:32:31,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:32:31,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:32:31,157 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:32:31,157 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:32:31,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.1.c [2022-12-14 12:32:33,749 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:32:34,093 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:32:34,093 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.1.c [2022-12-14 12:32:34,111 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh/data/5fa607dc3/1158013261fd4783824a13ff0e68a481/FLAG4e77b8d14 [2022-12-14 12:32:34,305 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh/data/5fa607dc3/1158013261fd4783824a13ff0e68a481 [2022-12-14 12:32:34,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:32:34,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:32:34,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:32:34,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:32:34,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:32:34,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:32:34" (1/1) ... [2022-12-14 12:32:34,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be58cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:34, skipping insertion in model container [2022-12-14 12:32:34,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:32:34" (1/1) ... [2022-12-14 12:32:34,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:32:34,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:32:34,611 WARN L237 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_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.1.c[2213,2226] [2022-12-14 12:32:35,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:32:35,109 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:32:35,119 WARN L237 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_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.1.c[2213,2226] [2022-12-14 12:32:35,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:32:35,470 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:32:35,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:35 WrapperNode [2022-12-14 12:32:35,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:32:35,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:32:35,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:32:35,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:32:35,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:35" (1/1) ... [2022-12-14 12:32:35,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:35" (1/1) ... [2022-12-14 12:32:35,913 INFO L138 Inliner]: procedures = 101, calls = 6646, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 21149 [2022-12-14 12:32:35,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:32:35,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:32:35,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:32:35,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:32:35,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:35" (1/1) ... [2022-12-14 12:32:35,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:35" (1/1) ... [2022-12-14 12:32:36,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:35" (1/1) ... [2022-12-14 12:32:36,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:35" (1/1) ... [2022-12-14 12:32:36,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:35" (1/1) ... [2022-12-14 12:32:36,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:35" (1/1) ... [2022-12-14 12:32:36,403 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:35" (1/1) ... [2022-12-14 12:32:36,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:35" (1/1) ... [2022-12-14 12:32:36,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:32:36,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:32:36,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:32:36,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:32:36,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:35" (1/1) ... [2022-12-14 12:32:36,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:32:36,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:36,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:32:36,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b47199-e2eb-4e6f-bbae-7c5b274cd6f5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:32:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-12-14 12:32:36,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-12-14 12:32:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-12-14 12:32:36,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-12-14 12:32:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 12:32:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-12-14 12:32:36,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-12-14 12:32:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 12:32:36,570 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 12:32:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-12-14 12:32:36,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-12-14 12:32:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-12-14 12:32:36,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-12-14 12:32:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-12-14 12:32:36,571 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-12-14 12:32:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-12-14 12:32:36,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-12-14 12:32:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-12-14 12:32:36,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-12-14 12:32:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 12:32:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-14 12:32:36,571 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-14 12:32:36,572 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-12-14 12:32:36,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-12-14 12:32:36,572 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-12-14 12:32:36,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-12-14 12:32:36,572 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-12-14 12:32:36,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-12-14 12:32:36,572 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-12-14 12:32:36,573 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-12-14 12:32:36,573 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-12-14 12:32:36,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-12-14 12:32:36,573 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 12:32:36,573 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 12:32:36,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:32:36,573 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 12:32:36,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 12:32:36,574 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-12-14 12:32:36,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-12-14 12:32:36,574 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-12-14 12:32:36,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-12-14 12:32:36,574 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-12-14 12:32:36,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-12-14 12:32:36,574 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 12:32:36,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 12:32:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-12-14 12:32:36,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-12-14 12:32:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 12:32:36,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 12:32:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-12-14 12:32:36,575 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-12-14 12:32:36,576 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-12-14 12:32:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-12-14 12:32:36,576 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-12-14 12:32:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-12-14 12:32:36,576 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-12-14 12:32:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-12-14 12:32:36,576 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-12-14 12:32:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-12-14 12:32:36,577 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-12-14 12:32:36,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-12-14 12:32:36,577 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-12-14 12:32:36,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-12-14 12:32:36,577 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-12-14 12:32:36,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-12-14 12:32:36,577 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-12-14 12:32:36,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-12-14 12:32:36,578 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-12-14 12:32:36,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-12-14 12:32:36,578 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-12-14 12:32:36,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-12-14 12:32:36,578 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-12-14 12:32:36,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-12-14 12:32:36,578 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-12-14 12:32:36,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-12-14 12:32:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-12-14 12:32:36,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-12-14 12:32:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-12-14 12:32:36,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-12-14 12:32:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-12-14 12:32:36,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-12-14 12:32:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-12-14 12:32:36,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-12-14 12:32:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-12-14 12:32:36,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-12-14 12:32:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-12-14 12:32:36,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-12-14 12:32:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:32:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-12-14 12:32:36,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-12-14 12:32:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:32:36,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:32:37,321 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:32:37,322 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:33:26,186 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:39:46,616 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:39:46,616 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 12:39:46,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:39:46 BoogieIcfgContainer [2022-12-14 12:39:46,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:39:46,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:39:46,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:39:46,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:39:46,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:32:34" (1/3) ... [2022-12-14 12:39:46,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be20ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:39:46, skipping insertion in model container [2022-12-14 12:39:46,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:35" (2/3) ... [2022-12-14 12:39:46,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be20ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:39:46, skipping insertion in model container [2022-12-14 12:39:46,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:39:46" (3/3) ... [2022-12-14 12:39:46,625 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_ctm.1.c [2022-12-14 12:39:46,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:39:46,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:39:46,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:39:46,694 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=FINITE_AUTOMATA, 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;@70783854, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:39:46,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:39:46,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 1093 states, 705 states have (on average 1.374468085106383) internal successors, (969), 729 states have internal predecessors, (969), 343 states have call successors, (343), 43 states have call predecessors, (343), 43 states have return successors, (343), 333 states have call predecessors, (343), 343 states have call successors, (343) [2022-12-14 12:39:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 12:39:46,723 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:39:46,724 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] [2022-12-14 12:39:46,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:39:46,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:39:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1779391210, now seen corresponding path program 1 times [2022-12-14 12:39:46,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:39:46,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015054327] [2022-12-14 12:39:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:39:46,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms