./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS --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 c3ec7c03a28dc415c6db5fadbfd8dcd491b1a493cd1bf88ef12d02131cd13437 --- 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-8393723 [2022-11-19 08:21:38,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:21:38,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:21:38,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:21:38,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:21:38,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:21:38,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:21:38,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:21:38,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:21:38,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:21:38,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:21:38,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:21:38,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:21:38,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:21:38,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:21:38,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:21:38,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:21:38,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:21:38,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:21:38,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:21:38,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:21:38,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:21:38,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:21:38,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:21:38,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:21:38,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:21:38,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:21:38,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:21:38,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:21:38,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:21:38,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:21:38,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:21:38,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:21:38,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:21:38,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:21:38,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:21:38,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:21:38,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:21:38,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:21:38,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:21:38,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:21:38,568 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:21:38,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:21:38,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:21:38,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:21:38,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:21:38,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:21:38,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:21:38,596 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:21:38,596 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:21:38,597 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:21:38,597 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:21:38,597 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:21:38,598 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:21:38,598 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:21:38,598 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:21:38,598 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:21:38,599 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:21:38,599 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:21:38,599 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:21:38,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:21:38,601 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:21:38,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:21:38,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:21:38,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:21:38,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:21:38,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:21:38,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:21:38,602 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:21:38,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:21:38,603 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:21:38,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:21:38,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:21:38,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:21:38,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:21:38,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:21:38,605 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:21:38,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:21:38,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:21:38,606 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:21:38,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:21:38,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:21:38,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:21:38,607 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_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3ec7c03a28dc415c6db5fadbfd8dcd491b1a493cd1bf88ef12d02131cd13437 [2022-11-19 08:21:38,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:21:38,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:21:38,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:21:38,940 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:21:38,941 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:21:38,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c [2022-11-19 08:21:39,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS/data/9b027393d/05ecf750c35945b9902f898e2a697081/FLAG361d45949 [2022-11-19 08:21:39,951 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:21:39,951 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c [2022-11-19 08:21:39,971 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS/data/9b027393d/05ecf750c35945b9902f898e2a697081/FLAG361d45949 [2022-11-19 08:21:40,011 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS/data/9b027393d/05ecf750c35945b9902f898e2a697081 [2022-11-19 08:21:40,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:21:40,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:21:40,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:21:40,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:21:40,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:21:40,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:21:40" (1/1) ... [2022-11-19 08:21:40,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3692d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:40, skipping insertion in model container [2022-11-19 08:21:40,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:21:40" (1/1) ... [2022-11-19 08:21:40,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:21:40,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:21:40,514 WARN L234 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_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c[1868,1881] [2022-11-19 08:21:41,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:21:41,208 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:21:41,225 WARN L234 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_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c[1868,1881] [2022-11-19 08:21:41,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:21:41,520 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:21:41,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:41 WrapperNode [2022-11-19 08:21:41,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:21:41,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:21:41,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:21:41,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:21:41,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:41" (1/1) ... [2022-11-19 08:21:41,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:41" (1/1) ... [2022-11-19 08:21:41,975 INFO L138 Inliner]: procedures = 99, calls = 2727, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8247 [2022-11-19 08:21:41,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:21:41,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:21:41,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:21:41,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:21:41,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:41" (1/1) ... [2022-11-19 08:21:41,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:41" (1/1) ... [2022-11-19 08:21:42,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:41" (1/1) ... [2022-11-19 08:21:42,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:41" (1/1) ... [2022-11-19 08:21:42,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:41" (1/1) ... [2022-11-19 08:21:42,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:41" (1/1) ... [2022-11-19 08:21:42,414 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:41" (1/1) ... [2022-11-19 08:21:42,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:41" (1/1) ... [2022-11-19 08:21:42,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:21:42,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:21:42,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:21:42,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:21:42,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:41" (1/1) ... [2022-11-19 08:21:42,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:21:42,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:42,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:21:42,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d27d4231-cfe8-4ac8-b250-6d998bf1a3b3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:21:42,641 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-11-19 08:21:42,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-11-19 08:21:42,642 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-11-19 08:21:42,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-11-19 08:21:42,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:21:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-11-19 08:21:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-11-19 08:21:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-19 08:21:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-19 08:21:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-11-19 08:21:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-11-19 08:21:42,644 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-11-19 08:21:42,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-11-19 08:21:42,644 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-11-19 08:21:42,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-11-19 08:21:42,644 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-11-19 08:21:42,645 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-11-19 08:21:42,645 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-11-19 08:21:42,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-11-19 08:21:42,645 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-11-19 08:21:42,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-11-19 08:21:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:21:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-19 08:21:42,646 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-19 08:21:42,646 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-11-19 08:21:42,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-11-19 08:21:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-11-19 08:21:42,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-11-19 08:21:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-11-19 08:21:42,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-11-19 08:21:42,647 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-11-19 08:21:42,648 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-11-19 08:21:42,648 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-11-19 08:21:42,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-11-19 08:21:42,648 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-19 08:21:42,648 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-19 08:21:42,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:21:42,649 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-19 08:21:42,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-19 08:21:42,649 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-11-19 08:21:42,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-11-19 08:21:42,650 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-11-19 08:21:42,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-11-19 08:21:42,650 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-11-19 08:21:42,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-11-19 08:21:42,650 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-19 08:21:42,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-19 08:21:42,651 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-11-19 08:21:42,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-11-19 08:21:42,651 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-19 08:21:42,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-19 08:21:42,652 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-11-19 08:21:42,652 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-11-19 08:21:42,652 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-11-19 08:21:42,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-11-19 08:21:42,652 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-11-19 08:21:42,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-11-19 08:21:42,653 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-11-19 08:21:42,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-11-19 08:21:42,654 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-11-19 08:21:42,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-11-19 08:21:42,654 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-11-19 08:21:42,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-11-19 08:21:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-19 08:21:42,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-19 08:21:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-11-19 08:21:42,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-11-19 08:21:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-11-19 08:21:42,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-11-19 08:21:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-11-19 08:21:42,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-11-19 08:21:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-11-19 08:21:42,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-11-19 08:21:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-11-19 08:21:42,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-11-19 08:21:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-11-19 08:21:42,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-11-19 08:21:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-11-19 08:21:42,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-11-19 08:21:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-11-19 08:21:42,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-11-19 08:21:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-11-19 08:21:42,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-11-19 08:21:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-11-19 08:21:42,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-11-19 08:21:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-11-19 08:21:42,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-11-19 08:21:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-11-19 08:21:42,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-11-19 08:21:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:21:42,660 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-11-19 08:21:42,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-11-19 08:21:42,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:21:42,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:21:43,353 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:21:43,357 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:22:00,462 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:22:09,571 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:22:09,572 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 08:22:09,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:22:09 BoogieIcfgContainer [2022-11-19 08:22:09,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:22:09,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:22:09,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:22:09,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:22:09,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:21:40" (1/3) ... [2022-11-19 08:22:09,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ac8f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:22:09, skipping insertion in model container [2022-11-19 08:22:09,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:41" (2/3) ... [2022-11-19 08:22:09,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ac8f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:22:09, skipping insertion in model container [2022-11-19 08:22:09,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:22:09" (3/3) ... [2022-11-19 08:22:09,598 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.1.c [2022-11-19 08:22:09,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:22:09,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:22:09,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:22:09,745 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;@1be0581a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:22:09,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:22:09,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 962 states, 611 states have (on average 1.386252045826514) internal successors, (847), 635 states have internal predecessors, (847), 305 states have call successors, (305), 44 states have call predecessors, (305), 44 states have return successors, (305), 295 states have call predecessors, (305), 305 states have call successors, (305) [2022-11-19 08:22:09,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 08:22:09,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:22:09,774 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] [2022-11-19 08:22:09,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:22:09,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:22:09,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1110822853, now seen corresponding path program 1 times [2022-11-19 08:22:09,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:22:09,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104317480] [2022-11-19 08:22:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:22:09,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms