./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem102_label31.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem102_label31.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl --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 00351e2802391cab7ccd63b8bf49c9e2c113b415d249820b552ab1bf0cc47310 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:59:43,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:59:43,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:59:43,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:59:43,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:59:43,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:59:43,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:59:43,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:59:43,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:59:43,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:59:43,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:59:43,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:59:43,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:59:43,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:59:43,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:59:43,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:59:43,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:59:43,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:59:43,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:59:43,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:59:43,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:59:43,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:59:43,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:59:43,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:59:43,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:59:43,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:59:43,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:59:43,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:59:43,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:59:43,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:59:43,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:59:43,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:59:43,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:59:43,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:59:43,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:59:43,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:59:43,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:59:43,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:59:43,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:59:43,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:59:43,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:59:43,513 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:59:43,564 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:59:43,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:59:43,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:59:43,566 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:59:43,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:59:43,574 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:59:43,574 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:59:43,575 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:59:43,575 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:59:43,575 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:59:43,576 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:59:43,577 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:59:43,577 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:59:43,577 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:59:43,577 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:59:43,578 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:59:43,578 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:59:43,578 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:59:43,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:59:43,580 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:59:43,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:59:43,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:59:43,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:59:43,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:59:43,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:59:43,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:59:43,583 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:59:43,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:59:43,584 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:59:43,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:59:43,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:59:43,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:59:43,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:59:43,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:59:43,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:59:43,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:59:43,586 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:59:43,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:59:43,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:59:43,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:59:43,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:59:43,588 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00351e2802391cab7ccd63b8bf49c9e2c113b415d249820b552ab1bf0cc47310 [2021-11-23 16:59:43,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:59:43,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:59:43,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:59:43,955 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:59:43,956 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:59:43,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-programs/Problem102_label31.c [2021-11-23 16:59:44,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/data/576e75147/a2817d400ba64d9eb6d1ae6e15f114b0/FLAG1b826c2d3 [2021-11-23 16:59:48,582 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:59:48,583 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/sv-benchmarks/c/eca-programs/Problem102_label31.c [2021-11-23 16:59:48,886 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/data/576e75147/a2817d400ba64d9eb6d1ae6e15f114b0/FLAG1b826c2d3 [2021-11-23 16:59:49,176 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/data/576e75147/a2817d400ba64d9eb6d1ae6e15f114b0 [2021-11-23 16:59:49,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:59:49,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:59:49,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:59:49,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:59:49,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:59:49,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:59:49" (1/1) ... [2021-11-23 16:59:49,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:59:49, skipping insertion in model container [2021-11-23 16:59:49,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:59:49" (1/1) ... [2021-11-23 16:59:49,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:59:50,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:00:19,935 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_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/sv-benchmarks/c/eca-programs/Problem102_label31.c[5716945,5716958] [2021-11-23 17:00:20,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:00:20,081 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:00:35,049 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_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/sv-benchmarks/c/eca-programs/Problem102_label31.c[5716945,5716958] [2021-11-23 17:00:35,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:00:40,064 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:00:40,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:40 WrapperNode [2021-11-23 17:00:40,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:00:40,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:00:40,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:00:40,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:00:40,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:40" (1/1) ... [2021-11-23 17:00:41,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:40" (1/1) ... [2021-11-23 17:00:47,218 INFO L137 Inliner]: procedures = 95, calls = 89, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 184295 [2021-11-23 17:00:47,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:00:47,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:00:47,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:00:47,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:00:47,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:40" (1/1) ... [2021-11-23 17:00:47,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:40" (1/1) ... [2021-11-23 17:00:48,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:40" (1/1) ... [2021-11-23 17:00:48,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:40" (1/1) ... [2021-11-23 17:00:50,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:40" (1/1) ... [2021-11-23 17:00:50,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:40" (1/1) ... [2021-11-23 17:00:51,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:40" (1/1) ... [2021-11-23 17:00:51,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:00:51,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:00:51,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:00:51,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:00:51,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:40" (1/1) ... [2021-11-23 17:00:51,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:00:51,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:00:52,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:00:52,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:00:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:00:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:00:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:00:52,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:00:53,184 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:00:53,200 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:02:02,227 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:02:02,472 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:02:02,479 INFO L158 Benchmark]: Toolchain (without parser) took 133296.71ms. Allocated memory was 872.4MB in the beginning and 12.5GB in the end (delta: 11.6GB). Free memory was 592.8MB in the beginning and 8.6GB in the end (delta: -8.0GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. [2021-11-23 17:02:02,479 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory is still 67.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:02:02,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 50884.30ms. Allocated memory was 872.4MB in the beginning and 6.1GB in the end (delta: 5.2GB). Free memory was 592.8MB in the beginning and 4.0GB in the end (delta: -3.5GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2021-11-23 17:02:02,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 7152.72ms. Allocated memory was 6.1GB in the beginning and 9.1GB in the end (delta: 3.0GB). Free memory was 4.0GB in the beginning and 6.5GB in the end (delta: -2.5GB). Peak memory consumption was 920.6MB. Max. memory is 16.1GB. [2021-11-23 17:02:02,483 INFO L158 Benchmark]: Boogie Preprocessor took 4732.18ms. Allocated memory is still 9.1GB. Free memory was 6.5GB in the beginning and 5.9GB in the end (delta: 627.1MB). Peak memory consumption was 634.4MB. Max. memory is 16.1GB. [2021-11-23 17:02:02,484 INFO L158 Benchmark]: RCFGBuilder took 70522.39ms. Allocated memory was 9.1GB in the beginning and 12.5GB in the end (delta: 3.4GB). Free memory was 5.9GB in the beginning and 8.6GB in the end (delta: -2.7GB). Peak memory consumption was 851.4MB. Max. memory is 16.1GB. [2021-11-23 17:02:02,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory is still 67.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 50884.30ms. Allocated memory was 872.4MB in the beginning and 6.1GB in the end (delta: 5.2GB). Free memory was 592.8MB in the beginning and 4.0GB in the end (delta: -3.5GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 7152.72ms. Allocated memory was 6.1GB in the beginning and 9.1GB in the end (delta: 3.0GB). Free memory was 4.0GB in the beginning and 6.5GB in the end (delta: -2.5GB). Peak memory consumption was 920.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 4732.18ms. Allocated memory is still 9.1GB. Free memory was 6.5GB in the beginning and 5.9GB in the end (delta: 627.1MB). Peak memory consumption was 634.4MB. Max. memory is 16.1GB. * RCFGBuilder took 70522.39ms. Allocated memory was 9.1GB in the beginning and 12.5GB in the end (delta: 3.4GB). Free memory was 5.9GB in the beginning and 8.6GB in the end (delta: -2.7GB). Peak memory consumption was 851.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:02:02,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem102_label31.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl --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 00351e2802391cab7ccd63b8bf49c9e2c113b415d249820b552ab1bf0cc47310 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:02:05,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:02:05,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:02:05,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:02:05,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:02:05,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:02:05,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:02:05,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:02:05,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:02:05,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:02:05,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:02:05,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:02:05,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:02:05,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:02:05,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:02:05,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:02:05,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:02:05,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:02:05,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:02:05,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:02:05,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:02:05,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:02:05,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:02:05,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:02:05,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:02:05,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:02:05,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:02:05,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:02:05,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:02:05,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:02:05,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:02:05,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:02:05,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:02:05,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:02:05,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:02:05,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:02:05,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:02:05,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:02:05,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:02:05,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:02:05,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:02:05,380 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:02:05,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:02:05,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:02:05,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:02:05,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:02:05,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:02:05,426 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:02:05,427 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:02:05,427 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:02:05,427 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:02:05,427 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:02:05,428 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:02:05,429 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:02:05,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:02:05,431 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:02:05,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:02:05,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:02:05,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:02:05,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:02:05,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:02:05,432 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:02:05,432 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:02:05,432 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:02:05,433 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:02:05,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:02:05,433 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:02:05,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:02:05,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:02:05,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:02:05,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:02:05,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:02:05,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:02:05,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:02:05,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:02:05,436 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:02:05,436 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:02:05,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:02:05,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:02:05,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:02:05,437 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00351e2802391cab7ccd63b8bf49c9e2c113b415d249820b552ab1bf0cc47310 [2021-11-23 17:02:05,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:02:05,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:02:05,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:02:05,861 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:02:05,861 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:02:05,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-programs/Problem102_label31.c [2021-11-23 17:02:05,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/data/307051b8d/bdfb058f21014f9cb223abc9eaa968eb/FLAG6abd39b07 [2021-11-23 17:02:10,478 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:02:10,479 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/sv-benchmarks/c/eca-programs/Problem102_label31.c [2021-11-23 17:02:10,806 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/data/307051b8d/bdfb058f21014f9cb223abc9eaa968eb/FLAG6abd39b07 [2021-11-23 17:02:10,925 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/data/307051b8d/bdfb058f21014f9cb223abc9eaa968eb [2021-11-23 17:02:10,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:02:10,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:02:10,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:02:10,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:02:10,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:02:10,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:02:10" (1/1) ... [2021-11-23 17:02:10,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456d58db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:10, skipping insertion in model container [2021-11-23 17:02:10,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:02:10" (1/1) ... [2021-11-23 17:02:10,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:02:12,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:02:39,815 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_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/sv-benchmarks/c/eca-programs/Problem102_label31.c[5716945,5716958] [2021-11-23 17:02:39,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:02:39,956 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:02:53,647 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_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/sv-benchmarks/c/eca-programs/Problem102_label31.c[5716945,5716958] [2021-11-23 17:02:53,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:02:58,461 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:02:58,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58 WrapperNode [2021-11-23 17:02:58,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:02:58,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:02:58,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:02:58,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:02:58,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:02:59,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:03:04,927 INFO L137 Inliner]: procedures = 95, calls = 89, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 184212 [2021-11-23 17:03:04,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:03:04,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:03:04,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:03:04,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:03:04,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:03:04,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:03:05,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:03:05,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:03:08,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:03:09,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:03:09,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:03:10,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:03:10,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:03:10,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:03:10,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:03:10,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (1/1) ... [2021-11-23 17:03:10,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:03:10,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:03:10,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:03:10,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:03:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:03:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:03:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:03:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:03:10,713 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:03:10,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:04:56,179 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:04:56,301 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:04:56,302 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 17:04:56,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:04:56 BoogieIcfgContainer [2021-11-23 17:04:56,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:04:56,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:04:56,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:04:56,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:04:56,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:02:10" (1/3) ... [2021-11-23 17:04:56,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a881b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:04:56, skipping insertion in model container [2021-11-23 17:04:56,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:02:58" (2/3) ... [2021-11-23 17:04:56,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a881b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:04:56, skipping insertion in model container [2021-11-23 17:04:56,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:04:56" (3/3) ... [2021-11-23 17:04:56,342 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem102_label31.c [2021-11-23 17:04:56,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:04:56,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:04:56,464 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:04:56,473 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 17:04:56,473 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:04:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 23215 states, 23213 states have (on average 1.8828673588075646) internal successors, (43707), 23214 states have internal predecessors, (43707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:04:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17920 [2021-11-23 17:04:59,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:04:59,423 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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17:04:59,431 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:04:59,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:04:59,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1179101702, now seen corresponding path program 1 times [2021-11-23 17:04:59,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:04:59,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582825146] [2021-11-23 17:04:59,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:04:59,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:04:59,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:04:59,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:04:59,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:05:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:05:08,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 18136 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:05:08,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:13,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:06:13,102 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:06:13,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582825146] [2021-11-23 17:06:13,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582825146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:06:13,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:06:13,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:06:13,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269964987] [2021-11-23 17:06:13,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:06:13,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:06:13,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:06:13,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:06:13,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:06:13,239 INFO L87 Difference]: Start difference. First operand has 23215 states, 23213 states have (on average 1.8828673588075646) internal successors, (43707), 23214 states have internal predecessors, (43707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5973.0) internal successors, (17919), 2 states have internal predecessors, (17919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:08:25,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:08:25,830 INFO L93 Difference]: Finished difference Result 65479 states and 124629 transitions. [2021-11-23 17:08:25,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:08:25,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5973.0) internal successors, (17919), 2 states have internal predecessors, (17919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17919 [2021-11-23 17:08:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:08:26,172 INFO L225 Difference]: With dead ends: 65479 [2021-11-23 17:08:26,173 INFO L226 Difference]: Without dead ends: 42200 [2021-11-23 17:08:26,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17918 GetRequests, 17917 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:08:26,227 INFO L933 BasicCegarLoop]: 21583 mSDtfsCounter, 2612 mSDsluCounter, 3094 mSDsCounter, 0 mSdLazyCounter, 55837 mSolverCounterSat, 21116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2612 SdHoareTripleChecker+Valid, 24677 SdHoareTripleChecker+Invalid, 76953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 21116 IncrementalHoareTripleChecker+Valid, 55837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 130.2s IncrementalHoareTripleChecker+Time [2021-11-23 17:08:26,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2612 Valid, 24677 Invalid, 76953 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [21116 Valid, 55837 Invalid, 0 Unknown, 0 Unchecked, 130.2s Time] [2021-11-23 17:08:26,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42200 states. [2021-11-23 17:08:27,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42200 to 41985. [2021-11-23 17:08:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41985 states, 41984 states have (on average 1.5931545350609757) internal successors, (66887), 41984 states have internal predecessors, (66887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:08:27,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41985 states to 41985 states and 66887 transitions. [2021-11-23 17:08:27,491 INFO L78 Accepts]: Start accepts. Automaton has 41985 states and 66887 transitions. Word has length 17919 [2021-11-23 17:08:27,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:08:27,531 INFO L470 AbstractCegarLoop]: Abstraction has 41985 states and 66887 transitions. [2021-11-23 17:08:27,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5973.0) internal successors, (17919), 2 states have internal predecessors, (17919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:08:27,537 INFO L276 IsEmpty]: Start isEmpty. Operand 41985 states and 66887 transitions. [2021-11-23 17:08:30,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17935 [2021-11-23 17:08:30,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:08:30,453 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-11-23 17:08:30,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 17:08:30,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:08:30,671 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:08:30,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:08:30,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2088121854, now seen corresponding path program 1 times [2021-11-23 17:08:30,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:08:30,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920277013] [2021-11-23 17:08:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:08:30,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:08:30,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:08:30,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:08:30,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a9e9ad3-505b-4d98-bd3b-3d350a29908c/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:08:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:08:38,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 18177 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 17:08:38,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:09:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:09:01,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:09:01,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:09:01,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920277013] [2021-11-23 17:09:01,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920277013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:09:01,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:09:01,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:09:01,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869186794] [2021-11-23 17:09:01,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:09:01,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:09:01,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:09:01,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:09:01,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:09:01,271 INFO L87 Difference]: Start difference. First operand 41985 states and 66887 transitions. Second operand has 3 states, 3 states have (on average 5978.0) internal successors, (17934), 2 states have internal predecessors, (17934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)