./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.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_5136a997-3de9-4420-9a55-147c7e084780/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5136a997-3de9-4420-9a55-147c7e084780/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_5136a997-3de9-4420-9a55-147c7e084780/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5136a997-3de9-4420-9a55-147c7e084780/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5136a997-3de9-4420-9a55-147c7e084780/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_5136a997-3de9-4420-9a55-147c7e084780/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 0c11dfbc24d8e2936a0720b93d6e580e096b076c7149ef4cbc8369f1ef818941 --- 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 06:50:51,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:50:51,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:50:51,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:50:51,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:50:51,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:50:51,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:50:51,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:50:51,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:50:51,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:50:51,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:50:51,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:50:51,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:50:51,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:50:51,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:50:51,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:50:51,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:50:51,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:50:51,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:50:51,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:50:51,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:50:51,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:50:51,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:50:51,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:50:51,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:50:51,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:50:51,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:50:51,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:50:51,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:50:51,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:50:51,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:50:51,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:50:51,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:50:51,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:50:51,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:50:51,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:50:51,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:50:51,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:50:51,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:50:51,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:50:51,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:50:51,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5136a997-3de9-4420-9a55-147c7e084780/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 06:50:51,761 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:50:51,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:50:51,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:50:51,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:50:51,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:50:51,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:50:51,763 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:50:51,764 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:50:51,764 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:50:51,764 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:50:51,764 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:50:51,764 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:50:51,764 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:50:51,764 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:50:51,765 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:50:51,765 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:50:51,765 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:50:51,765 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:50:51,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:50:51,766 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:50:51,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:50:51,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:50:51,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:50:51,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:50:51,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:50:51,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:50:51,767 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:50:51,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:50:51,767 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:50:51,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:50:51,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:50:51,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:50:51,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:50:51,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:50:51,768 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:50:51,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:50:51,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:50:51,768 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:50:51,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:50:51,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:50:51,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:50:51,769 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_5136a997-3de9-4420-9a55-147c7e084780/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5136a997-3de9-4420-9a55-147c7e084780/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c11dfbc24d8e2936a0720b93d6e580e096b076c7149ef4cbc8369f1ef818941 [2022-12-14 06:50:51,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:50:51,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:50:51,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:50:51,977 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:50:51,977 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:50:51,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5136a997-3de9-4420-9a55-147c7e084780/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c [2022-12-14 06:50:54,489 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:50:54,797 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:50:54,797 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5136a997-3de9-4420-9a55-147c7e084780/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c [2022-12-14 06:50:54,814 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5136a997-3de9-4420-9a55-147c7e084780/bin/utaipan-gh47qXpMRh/data/db4ff180a/076a0285ec5e4bc29cae52dde30205dd/FLAG4a5bdbcf3 [2022-12-14 06:50:55,077 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5136a997-3de9-4420-9a55-147c7e084780/bin/utaipan-gh47qXpMRh/data/db4ff180a/076a0285ec5e4bc29cae52dde30205dd [2022-12-14 06:50:55,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:50:55,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:50:55,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:50:55,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:50:55,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:50:55,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:50:55" (1/1) ... [2022-12-14 06:50:55,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db94f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:55, skipping insertion in model container [2022-12-14 06:50:55,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:50:55" (1/1) ... [2022-12-14 06:50:55,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:50:55,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:50:55,316 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_5136a997-3de9-4420-9a55-147c7e084780/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c[1870,1883] [2022-12-14 06:50:55,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:50:55,669 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:50:55,682 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_5136a997-3de9-4420-9a55-147c7e084780/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c[1870,1883] [2022-12-14 06:50:55,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:50:55,883 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:50:55,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:55 WrapperNode [2022-12-14 06:50:55,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:50:55,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:50:55,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:50:55,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:50:55,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:55" (1/1) ... [2022-12-14 06:50:55,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:55" (1/1) ... [2022-12-14 06:50:56,127 INFO L138 Inliner]: procedures = 99, calls = 2816, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8376 [2022-12-14 06:50:56,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:50:56,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:50:56,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:50:56,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:50:56,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:55" (1/1) ... [2022-12-14 06:50:56,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:55" (1/1) ... [2022-12-14 06:50:56,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:55" (1/1) ... [2022-12-14 06:50:56,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:55" (1/1) ... [2022-12-14 06:50:56,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:55" (1/1) ... [2022-12-14 06:50:56,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:55" (1/1) ... [2022-12-14 06:50:56,309 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:55" (1/1) ... [2022-12-14 06:50:56,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:55" (1/1) ... [2022-12-14 06:50:56,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:50:56,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:50:56,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:50:56,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:50:56,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:55" (1/1) ... [2022-12-14 06:50:56,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:50:56,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5136a997-3de9-4420-9a55-147c7e084780/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:50:56,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5136a997-3de9-4420-9a55-147c7e084780/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:50:56,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5136a997-3de9-4420-9a55-147c7e084780/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:50:56,386 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-12-14 06:50:56,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-12-14 06:50:56,386 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-12-14 06:50:56,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-12-14 06:50:56,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 06:50:56,386 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-12-14 06:50:56,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-12-14 06:50:56,386 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 06:50:56,386 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 06:50:56,386 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-12-14 06:50:56,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-12-14 06:50:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-12-14 06:50:56,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-12-14 06:50:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-12-14 06:50:56,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-12-14 06:50:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-12-14 06:50:56,387 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-12-14 06:50:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-12-14 06:50:56,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-12-14 06:50:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-12-14 06:50:56,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-12-14 06:50:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 06:50:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-14 06:50:56,387 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-14 06:50:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-12-14 06:50:56,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-12-14 06:50:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-12-14 06:50:56,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-12-14 06:50:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-12-14 06:50:56,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-12-14 06:50:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-12-14 06:50:56,388 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-12-14 06:50:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-12-14 06:50:56,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-12-14 06:50:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 06:50:56,388 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 06:50:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:50:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 06:50:56,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 06:50:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-12-14 06:50:56,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-12-14 06:50:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-12-14 06:50:56,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-12-14 06:50:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-12-14 06:50:56,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-12-14 06:50:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 06:50:56,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 06:50:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-12-14 06:50:56,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-12-14 06:50:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 06:50:56,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 06:50:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-12-14 06:50:56,389 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-12-14 06:50:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-12-14 06:50:56,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-12-14 06:50:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-12-14 06:50:56,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-12-14 06:50:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-12-14 06:50:56,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-12-14 06:50:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-12-14 06:50:56,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-12-14 06:50:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-12-14 06:50:56,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-12-14 06:50:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-12-14 06:50:56,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-12-14 06:50:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-12-14 06:50:56,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-12-14 06:50:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-12-14 06:50:56,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-12-14 06:50:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-12-14 06:50:56,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-12-14 06:50:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-12-14 06:50:56,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-12-14 06:50:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-12-14 06:50:56,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-12-14 06:50:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-12-14 06:50:56,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-12-14 06:50:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-12-14 06:50:56,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-12-14 06:50:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-12-14 06:50:56,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-12-14 06:50:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-12-14 06:50:56,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-12-14 06:50:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-12-14 06:50:56,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-12-14 06:50:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-12-14 06:50:56,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-12-14 06:50:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-12-14 06:50:56,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-12-14 06:50:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:50:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-12-14 06:50:56,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-12-14 06:50:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:50:56,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:50:56,756 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:50:56,759 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:51:13,696 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:51:19,081 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:51:19,081 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 06:51:19,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:51:19 BoogieIcfgContainer [2022-12-14 06:51:19,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:51:19,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:51:19,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:51:19,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:51:19,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:50:55" (1/3) ... [2022-12-14 06:51:19,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e56d55f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:51:19, skipping insertion in model container [2022-12-14 06:51:19,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:55" (2/3) ... [2022-12-14 06:51:19,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e56d55f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:51:19, skipping insertion in model container [2022-12-14 06:51:19,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:51:19" (3/3) ... [2022-12-14 06:51:19,092 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.3-1.c [2022-12-14 06:51:19,108 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:51:19,108 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 06:51:19,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:51:19,182 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;@39a165ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:51:19,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 06:51:19,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 611 states have (on average 1.3846153846153846) internal successors, (846), 635 states have internal predecessors, (846), 306 states have call successors, (306), 44 states have call predecessors, (306), 44 states have return successors, (306), 296 states have call predecessors, (306), 306 states have call successors, (306) [2022-12-14 06:51:19,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 06:51:19,199 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:19,199 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] [2022-12-14 06:51:19,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:51:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1288793304, now seen corresponding path program 1 times [2022-12-14 06:51:19,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:19,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352313179] [2022-12-14 06:51:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:19,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms