./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0 --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 a6fb157ae499b257dadbdfdc38e5d4454494023bad31f4939a5eb0b429ddb260 --- 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-e04fb08 [2022-11-16 16:17:56,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:17:56,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:17:56,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:17:56,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:17:56,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:17:56,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:17:56,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:17:56,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:17:56,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:17:56,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:17:56,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:17:56,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:17:56,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:17:56,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:17:56,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:17:56,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:17:56,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:17:56,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:17:56,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:17:56,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:17:56,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:17:56,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:17:56,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:17:56,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:17:56,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:17:56,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:17:56,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:17:56,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:17:56,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:17:56,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:17:56,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:17:56,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:17:56,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:17:56,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:17:56,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:17:56,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:17:56,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:17:56,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:17:56,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:17:56,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:17:56,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 16:17:56,626 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:17:56,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:17:56,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:17:56,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:17:56,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:17:56,628 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:17:56,628 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:17:56,628 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:17:56,629 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:17:56,629 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:17:56,630 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:17:56,630 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:17:56,630 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:17:56,630 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:17:56,631 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:17:56,631 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:17:56,631 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:17:56,631 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:17:56,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:17:56,632 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:17:56,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:17:56,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:17:56,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:17:56,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:17:56,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:17:56,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:17:56,635 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:17:56,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:17:56,635 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:17:56,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:17:56,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:17:56,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:17:56,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:17:56,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:17:56,637 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:17:56,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:17:56,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:17:56,637 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:17:56,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:17:56,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:17:56,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:17:56,638 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_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6fb157ae499b257dadbdfdc38e5d4454494023bad31f4939a5eb0b429ddb260 [2022-11-16 16:17:56,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:17:56,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:17:56,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:17:56,947 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:17:56,948 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:17:56,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c [2022-11-16 16:17:57,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0/data/a0b56789e/72d4a8b852c34d8db54f59d3174a8d9d/FLAG2c6d3ec35 [2022-11-16 16:17:57,717 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:17:57,718 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c [2022-11-16 16:17:57,747 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0/data/a0b56789e/72d4a8b852c34d8db54f59d3174a8d9d/FLAG2c6d3ec35 [2022-11-16 16:17:57,848 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0/data/a0b56789e/72d4a8b852c34d8db54f59d3174a8d9d [2022-11-16 16:17:57,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:17:57,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:17:57,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:17:57,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:17:57,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:17:57,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b204922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:57, skipping insertion in model container [2022-11-16 16:17:57,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:17:57" (1/1) ... [2022-11-16 16:17:57,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:17:57,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:17:58,208 WARN L229 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_a5f1c25c-79de-4b09-8e38-345db2fb1c60/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c[1871,1884] [2022-11-16 16:17:58,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:17:58,825 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:17:58,842 WARN L229 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_a5f1c25c-79de-4b09-8e38-345db2fb1c60/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c[1871,1884] [2022-11-16 16:17:59,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:17:59,178 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:17:59,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:59 WrapperNode [2022-11-16 16:17:59,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:17:59,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:17:59,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:17:59,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:17:59,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:59" (1/1) ... [2022-11-16 16:17:59,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:59" (1/1) ... [2022-11-16 16:17:59,512 INFO L138 Inliner]: procedures = 99, calls = 2816, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8376 [2022-11-16 16:17:59,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:17:59,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:17:59,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:17:59,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:17:59,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:59" (1/1) ... [2022-11-16 16:17:59,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:59" (1/1) ... [2022-11-16 16:17:59,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:59" (1/1) ... [2022-11-16 16:17:59,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:59" (1/1) ... [2022-11-16 16:17:59,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:59" (1/1) ... [2022-11-16 16:17:59,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:59" (1/1) ... [2022-11-16 16:17:59,835 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:59" (1/1) ... [2022-11-16 16:17:59,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:59" (1/1) ... [2022-11-16 16:17:59,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:17:59,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:17:59,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:17:59,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:17:59,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:59" (1/1) ... [2022-11-16 16:17:59,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:17:59,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:17:59,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:17:59,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5f1c25c-79de-4b09-8e38-345db2fb1c60/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:17:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-11-16 16:17:59,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-11-16 16:17:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-11-16 16:17:59,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-11-16 16:17:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 16:17:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-11-16 16:17:59,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-11-16 16:17:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-16 16:17:59,991 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-16 16:17:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-11-16 16:17:59,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-11-16 16:17:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-11-16 16:17:59,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-11-16 16:17:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-11-16 16:17:59,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-11-16 16:17:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-11-16 16:17:59,992 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-11-16 16:17:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-11-16 16:17:59,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-11-16 16:17:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-11-16 16:17:59,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-11-16 16:17:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 16:17:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-16 16:17:59,993 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-16 16:17:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-11-16 16:17:59,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-11-16 16:17:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-11-16 16:17:59,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-11-16 16:17:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-11-16 16:17:59,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-11-16 16:17:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-11-16 16:17:59,995 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-11-16 16:17:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-11-16 16:17:59,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-11-16 16:17:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-16 16:17:59,996 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-16 16:17:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:17:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-16 16:17:59,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-16 16:17:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-11-16 16:17:59,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-11-16 16:17:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-11-16 16:17:59,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-11-16 16:17:59,998 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-11-16 16:17:59,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-11-16 16:17:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-16 16:18:00,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-16 16:18:00,000 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-11-16 16:18:00,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-11-16 16:18:00,001 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-16 16:18:00,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-16 16:18:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-11-16 16:18:00,002 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-11-16 16:18:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-11-16 16:18:00,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-11-16 16:18:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-11-16 16:18:00,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-11-16 16:18:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-11-16 16:18:00,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-11-16 16:18:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-11-16 16:18:00,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-11-16 16:18:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-11-16 16:18:00,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-11-16 16:18:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-16 16:18:00,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-16 16:18:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-11-16 16:18:00,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-11-16 16:18:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-11-16 16:18:00,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-11-16 16:18:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-11-16 16:18:00,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-11-16 16:18:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-11-16 16:18:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-11-16 16:18:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-11-16 16:18:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-11-16 16:18:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-11-16 16:18:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-11-16 16:18:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-11-16 16:18:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-11-16 16:18:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-11-16 16:18:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-11-16 16:18:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-11-16 16:18:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-11-16 16:18:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-11-16 16:18:00,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-11-16 16:18:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-11-16 16:18:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-11-16 16:18:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-11-16 16:18:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-11-16 16:18:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:18:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-11-16 16:18:00,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-11-16 16:18:00,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:18:00,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:18:00,720 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:18:00,723 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:18:20,402 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:18:29,593 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:18:29,593 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 16:18:29,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:18:29 BoogieIcfgContainer [2022-11-16 16:18:29,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:18:29,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:18:29,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:18:29,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:18:29,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:17:57" (1/3) ... [2022-11-16 16:18:29,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102204d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:18:29, skipping insertion in model container [2022-11-16 16:18:29,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:59" (2/3) ... [2022-11-16 16:18:29,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102204d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:18:29, skipping insertion in model container [2022-11-16 16:18:29,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:18:29" (3/3) ... [2022-11-16 16:18:29,619 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.3-2.c [2022-11-16 16:18:29,640 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:18:29,640 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:18:29,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:18:29,746 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;@8622313, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:18:29,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:18:29,753 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) [2022-11-16 16:18:29,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 16:18:29,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:18:29,763 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] [2022-11-16 16:18:29,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:18:29,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:18:29,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1840980182, now seen corresponding path program 1 times [2022-11-16 16:18:29,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:18:29,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561927294] [2022-11-16 16:18:29,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:18:29,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms