./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI --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 436e6e57c04bd43264564f478c3aa92ec3799e6c36d71ae9bac6692f2873338f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:06:33,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:06:33,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:06:33,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:06:33,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:06:33,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:06:33,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:06:33,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:06:33,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:06:33,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:06:33,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:06:33,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:06:33,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:06:33,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:06:33,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:06:33,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:06:33,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:06:33,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:06:33,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:06:33,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:06:33,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:06:33,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:06:33,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:06:33,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:06:33,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:06:33,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:06:33,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:06:33,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:06:33,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:06:33,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:06:33,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:06:33,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:06:33,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:06:33,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:06:33,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:06:33,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:06:33,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:06:33,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:06:33,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:06:33,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:06:33,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:06:33,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:06:33,525 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:06:33,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:06:33,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:06:33,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:06:33,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:06:33,528 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:06:33,528 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:06:33,528 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:06:33,528 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:06:33,529 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:06:33,529 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:06:33,529 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:06:33,529 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:06:33,530 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:06:33,530 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:06:33,530 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:06:33,531 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:06:33,531 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:06:33,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:06:33,532 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:06:33,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:06:33,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:06:33,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:06:33,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:06:33,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:06:33,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:06:33,534 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:06:33,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:06:33,534 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:06:33,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:06:33,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:06:33,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:06:33,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:33,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:06:33,536 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:06:33,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:06:33,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:06:33,537 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:06:33,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:06:33,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:06:33,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:06:33,538 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_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 436e6e57c04bd43264564f478c3aa92ec3799e6c36d71ae9bac6692f2873338f [2022-11-03 04:06:33,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:06:33,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:06:33,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:06:33,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:06:33,874 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:06:33,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c [2022-11-03 04:06:33,970 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI/data/7b075585b/7b3cc5451ec443d4b1e9a32fe145d0df/FLAG12e664fbb [2022-11-03 04:06:34,762 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:06:34,763 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c [2022-11-03 04:06:34,799 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI/data/7b075585b/7b3cc5451ec443d4b1e9a32fe145d0df/FLAG12e664fbb [2022-11-03 04:06:35,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI/data/7b075585b/7b3cc5451ec443d4b1e9a32fe145d0df [2022-11-03 04:06:35,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:06:35,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:06:35,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:35,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:06:35,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:06:35,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:35" (1/1) ... [2022-11-03 04:06:35,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8d9507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:35, skipping insertion in model container [2022-11-03 04:06:35,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:35" (1/1) ... [2022-11-03 04:06:35,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:06:35,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:06:35,746 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c[1868,1881] [2022-11-03 04:06:36,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:36,532 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:06:36,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c[1868,1881] [2022-11-03 04:06:36,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:36,868 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:06:36,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:36 WrapperNode [2022-11-03 04:06:36,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:36,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:36,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:06:36,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:06:36,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:36" (1/1) ... [2022-11-03 04:06:36,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:36" (1/1) ... [2022-11-03 04:06:37,227 INFO L138 Inliner]: procedures = 99, calls = 2906, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8512 [2022-11-03 04:06:37,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:37,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:06:37,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:06:37,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:06:37,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:36" (1/1) ... [2022-11-03 04:06:37,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:36" (1/1) ... [2022-11-03 04:06:37,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:36" (1/1) ... [2022-11-03 04:06:37,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:36" (1/1) ... [2022-11-03 04:06:37,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:36" (1/1) ... [2022-11-03 04:06:37,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:36" (1/1) ... [2022-11-03 04:06:37,615 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:36" (1/1) ... [2022-11-03 04:06:37,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:36" (1/1) ... [2022-11-03 04:06:37,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:06:37,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:06:37,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:06:37,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:06:37,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:36" (1/1) ... [2022-11-03 04:06:37,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:37,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:06:37,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:06:37,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73254645-852e-404b-b100-1ab23e101ebe/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:06:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-11-03 04:06:37,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-11-03 04:06:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-11-03 04:06:37,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-11-03 04:06:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:06:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-11-03 04:06:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-11-03 04:06:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-03 04:06:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-03 04:06:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-11-03 04:06:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-11-03 04:06:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-11-03 04:06:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-11-03 04:06:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-11-03 04:06:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-11-03 04:06:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-11-03 04:06:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-11-03 04:06:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-11-03 04:06:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-11-03 04:06:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-11-03 04:06:37,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-11-03 04:06:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:06:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-03 04:06:37,815 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-03 04:06:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-11-03 04:06:37,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-11-03 04:06:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-11-03 04:06:37,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-11-03 04:06:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-11-03 04:06:37,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-11-03 04:06:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-11-03 04:06:37,817 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-11-03 04:06:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-11-03 04:06:37,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-11-03 04:06:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-03 04:06:37,819 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-03 04:06:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:06:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-03 04:06:37,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-03 04:06:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-11-03 04:06:37,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-11-03 04:06:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-11-03 04:06:37,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-11-03 04:06:37,821 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-11-03 04:06:37,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-11-03 04:06:37,822 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-03 04:06:37,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-03 04:06:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-11-03 04:06:37,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-11-03 04:06:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-03 04:06:37,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-03 04:06:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-11-03 04:06:37,825 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-11-03 04:06:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-11-03 04:06:37,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-11-03 04:06:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-11-03 04:06:37,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-11-03 04:06:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-11-03 04:06:37,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-11-03 04:06:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-11-03 04:06:37,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-11-03 04:06:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-11-03 04:06:37,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-11-03 04:06:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-03 04:06:37,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-03 04:06:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-11-03 04:06:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-11-03 04:06:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-11-03 04:06:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-11-03 04:06:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-11-03 04:06:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-11-03 04:06:37,829 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-11-03 04:06:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-11-03 04:06:37,829 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-11-03 04:06:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-11-03 04:06:37,829 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-11-03 04:06:37,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-11-03 04:06:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-11-03 04:06:37,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-11-03 04:06:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-11-03 04:06:37,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-11-03 04:06:37,832 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-11-03 04:06:37,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-11-03 04:06:37,833 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-11-03 04:06:37,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-11-03 04:06:37,834 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-11-03 04:06:37,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-11-03 04:06:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-11-03 04:06:37,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-11-03 04:06:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:06:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-11-03 04:06:37,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-11-03 04:06:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:06:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:06:38,595 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:06:38,615 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:07:04,900 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:07:15,827 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:07:15,828 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-03 04:07:15,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:15 BoogieIcfgContainer [2022-11-03 04:07:15,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:07:15,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:07:15,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:07:15,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:07:15,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:06:35" (1/3) ... [2022-11-03 04:07:15,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359141ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:15, skipping insertion in model container [2022-11-03 04:07:15,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:36" (2/3) ... [2022-11-03 04:07:15,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359141ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:15, skipping insertion in model container [2022-11-03 04:07:15,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:15" (3/3) ... [2022-11-03 04:07:15,866 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.4.c [2022-11-03 04:07:15,891 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:07:15,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:07:16,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:07:16,021 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;@5c1609ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:07:16,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:07:16,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 967 states, 613 states have (on average 1.3833605220228384) internal successors, (848), 637 states have internal predecessors, (848), 308 states have call successors, (308), 44 states have call predecessors, (308), 44 states have return successors, (308), 298 states have call predecessors, (308), 308 states have call successors, (308) [2022-11-03 04:07:16,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 04:07:16,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:16,053 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] [2022-11-03 04:07:16,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:16,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:16,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1062196608, now seen corresponding path program 1 times [2022-11-03 04:07:16,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:16,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319984347] [2022-11-03 04:07:16,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:16,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms