./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 6b4ec56b 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_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9 --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-6b4ec56 [2022-11-20 20:04:37,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:04:37,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:04:37,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:04:37,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:04:37,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:04:37,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:04:37,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:04:37,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:04:37,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:04:37,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:04:37,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:04:37,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:04:37,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:04:37,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:04:37,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:04:37,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:04:37,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:04:37,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:04:37,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:04:37,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:04:37,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:04:37,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:04:37,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:04:37,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:04:37,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:04:37,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:04:37,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:04:37,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:04:37,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:04:37,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:04:37,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:04:37,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:04:37,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:04:37,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:04:37,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:04:37,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:04:37,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:04:37,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:04:37,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:04:37,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:04:37,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:04:37,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:04:37,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:04:37,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:04:37,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:04:37,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:04:37,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:04:37,557 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:04:37,557 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:04:37,558 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:04:37,558 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:04:37,558 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:04:37,558 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:04:37,558 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:04:37,558 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:04:37,559 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:04:37,559 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:04:37,559 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:04:37,559 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:04:37,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:04:37,560 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:04:37,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:04:37,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:04:37,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:04:37,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:04:37,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:04:37,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:04:37,561 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:04:37,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:04:37,562 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:04:37,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:04:37,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:04:37,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:04:37,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:04:37,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:04:37,563 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:04:37,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:04:37,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:04:37,563 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:04:37,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:04:37,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:04:37,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:04:37,564 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_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3ec7c03a28dc415c6db5fadbfd8dcd491b1a493cd1bf88ef12d02131cd13437 [2022-11-20 20:04:37,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:04:37,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:04:37,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:04:37,869 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:04:37,870 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:04:37,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c [2022-11-20 20:04:41,032 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:04:41,446 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:04:41,446 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c [2022-11-20 20:04:41,478 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9/data/2cf5eca12/29b4f6f0bde54764879d320d5d9a65f8/FLAGbf59917a3 [2022-11-20 20:04:41,496 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9/data/2cf5eca12/29b4f6f0bde54764879d320d5d9a65f8 [2022-11-20 20:04:41,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:04:41,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:04:41,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:04:41,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:04:41,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:04:41,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:04:41" (1/1) ... [2022-11-20 20:04:41,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c476256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:41, skipping insertion in model container [2022-11-20 20:04:41,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:04:41" (1/1) ... [2022-11-20 20:04:41,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:04:41,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:04:41,817 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c[1868,1881] [2022-11-20 20:04:42,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:04:42,524 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:04:42,552 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/sv-benchmarks/c/seq-mthreaded/rekh_ctm.1.c[1868,1881] [2022-11-20 20:04:43,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:04:43,093 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:04:43,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:43 WrapperNode [2022-11-20 20:04:43,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:04:43,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:04:43,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:04:43,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:04:43,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:43" (1/1) ... [2022-11-20 20:04:43,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:43" (1/1) ... [2022-11-20 20:04:43,462 INFO L138 Inliner]: procedures = 99, calls = 2727, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8247 [2022-11-20 20:04:43,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:04:43,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:04:43,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:04:43,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:04:43,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:43" (1/1) ... [2022-11-20 20:04:43,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:43" (1/1) ... [2022-11-20 20:04:43,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:43" (1/1) ... [2022-11-20 20:04:43,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:43" (1/1) ... [2022-11-20 20:04:43,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:43" (1/1) ... [2022-11-20 20:04:43,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:43" (1/1) ... [2022-11-20 20:04:43,692 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:43" (1/1) ... [2022-11-20 20:04:43,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:43" (1/1) ... [2022-11-20 20:04:43,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:04:43,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:04:43,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:04:43,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:04:43,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:43" (1/1) ... [2022-11-20 20:04:43,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:04:43,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:04:43,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:04:43,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a68c21e-6f7d-4d3a-9313-e41e8ef27b22/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:04:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-11-20 20:04:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-11-20 20:04:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-11-20 20:04:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-11-20 20:04:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:04:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-11-20 20:04:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-11-20 20:04:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-20 20:04:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-20 20:04:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-11-20 20:04:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-11-20 20:04:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-11-20 20:04:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-11-20 20:04:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-11-20 20:04:43,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-11-20 20:04:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-11-20 20:04:43,925 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-11-20 20:04:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-11-20 20:04:43,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-11-20 20:04:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-11-20 20:04:43,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-11-20 20:04:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:04:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-20 20:04:43,927 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-20 20:04:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-11-20 20:04:43,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-11-20 20:04:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-11-20 20:04:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-11-20 20:04:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-11-20 20:04:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-11-20 20:04:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-11-20 20:04:43,929 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-11-20 20:04:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-11-20 20:04:43,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-11-20 20:04:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-20 20:04:43,930 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-20 20:04:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:04:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-20 20:04:43,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-20 20:04:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-11-20 20:04:43,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-11-20 20:04:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-11-20 20:04:43,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-11-20 20:04:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-11-20 20:04:43,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-11-20 20:04:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-20 20:04:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-20 20:04:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-11-20 20:04:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-11-20 20:04:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-20 20:04:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-20 20:04:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-11-20 20:04:43,933 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-11-20 20:04:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-11-20 20:04:43,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-11-20 20:04:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-11-20 20:04:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-11-20 20:04:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-11-20 20:04:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-11-20 20:04:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-11-20 20:04:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-11-20 20:04:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-11-20 20:04:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-11-20 20:04:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-20 20:04:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-20 20:04:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-11-20 20:04:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-11-20 20:04:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-11-20 20:04:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-11-20 20:04:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-11-20 20:04:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-11-20 20:04:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-11-20 20:04:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-11-20 20:04:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-11-20 20:04:43,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-11-20 20:04:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-11-20 20:04:43,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-11-20 20:04:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-11-20 20:04:43,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-11-20 20:04:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-11-20 20:04:43,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-11-20 20:04:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-11-20 20:04:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-11-20 20:04:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-11-20 20:04:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-11-20 20:04:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-11-20 20:04:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-11-20 20:04:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-11-20 20:04:43,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-11-20 20:04:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:04:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-11-20 20:04:43,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-11-20 20:04:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:04:43,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:04:44,695 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:04:44,697 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:05:02,188 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:05:11,949 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:05:11,950 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 20:05:11,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:05:11 BoogieIcfgContainer [2022-11-20 20:05:11,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:05:11,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:05:11,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:05:11,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:05:11,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:04:41" (1/3) ... [2022-11-20 20:05:11,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57543c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:05:11, skipping insertion in model container [2022-11-20 20:05:11,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:04:43" (2/3) ... [2022-11-20 20:05:11,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57543c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:05:11, skipping insertion in model container [2022-11-20 20:05:11,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:05:11" (3/3) ... [2022-11-20 20:05:11,975 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.1.c [2022-11-20 20:05:11,998 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:05:11,999 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:05:12,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:05:12,108 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;@5391880a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:05:12,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:05:12,121 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) [2022-11-20 20:05:12,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 20:05:12,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:05:12,134 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] [2022-11-20 20:05:12,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:05:12,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:05:12,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1110822853, now seen corresponding path program 1 times [2022-11-20 20:05:12,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:05:12,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310138047] [2022-11-20 20:05:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:05:12,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms