./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem101_label01.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_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/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_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem101_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/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_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/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 bc0c987e1a7ba46775705505d09cb94d967fadd6d9e6218a822aa4c4e061e2a4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:16:19,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:16:19,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:16:19,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:16:19,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:16:19,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:16:19,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:16:19,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:16:19,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:16:19,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:16:19,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:16:19,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:16:19,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:16:19,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:16:19,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:16:19,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:16:19,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:16:19,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:16:19,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:16:19,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:16:19,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:16:19,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:16:19,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:16:19,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:16:19,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:16:19,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:16:19,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:16:19,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:16:19,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:16:19,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:16:19,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:16:19,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:16:19,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:16:19,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:16:19,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:16:19,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:16:19,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:16:19,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:16:19,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:16:19,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:16:19,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:16:19,334 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:16:19,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:16:19,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:16:19,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:16:19,378 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:16:19,379 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:16:19,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:16:19,379 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:16:19,380 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:16:19,380 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:16:19,381 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:16:19,381 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:16:19,381 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:16:19,382 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:16:19,382 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:16:19,385 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:16:19,386 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:16:19,386 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:16:19,386 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:16:19,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:16:19,387 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:16:19,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:16:19,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:16:19,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:16:19,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:16:19,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:16:19,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:16:19,390 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:16:19,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:16:19,391 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:16:19,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:16:19,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:16:19,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:16:19,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:16:19,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:16:19,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:16:19,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:16:19,394 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:16:19,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:16:19,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:16:19,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:16:19,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:16:19,395 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_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc0c987e1a7ba46775705505d09cb94d967fadd6d9e6218a822aa4c4e061e2a4 [2021-11-23 17:16:19,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:16:19,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:16:19,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:16:19,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:16:19,699 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:16:19,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-programs/Problem101_label01.c [2021-11-23 17:16:19,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/data/e2ac3f127/e8aff8c03e72472dbea4094b68026cef/FLAG47dbead15 [2021-11-23 17:16:22,282 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:16:22,283 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/sv-benchmarks/c/eca-programs/Problem101_label01.c [2021-11-23 17:16:22,432 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/data/e2ac3f127/e8aff8c03e72472dbea4094b68026cef/FLAG47dbead15 [2021-11-23 17:16:22,763 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/data/e2ac3f127/e8aff8c03e72472dbea4094b68026cef [2021-11-23 17:16:22,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:16:22,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:16:22,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:16:22,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:16:22,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:16:22,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:16:22" (1/1) ... [2021-11-23 17:16:22,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c4d1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:22, skipping insertion in model container [2021-11-23 17:16:22,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:16:22" (1/1) ... [2021-11-23 17:16:22,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:16:23,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:16:35,214 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_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/sv-benchmarks/c/eca-programs/Problem101_label01.c[2766796,2766809] [2021-11-23 17:16:35,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:16:35,298 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:16:42,265 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_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/sv-benchmarks/c/eca-programs/Problem101_label01.c[2766796,2766809] [2021-11-23 17:16:42,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:16:43,475 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:16:43,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:43 WrapperNode [2021-11-23 17:16:43,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:16:43,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:16:43,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:16:43,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:16:43,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:43" (1/1) ... [2021-11-23 17:16:44,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:43" (1/1) ... [2021-11-23 17:16:47,056 INFO L137 Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83780 [2021-11-23 17:16:47,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:16:47,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:16:47,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:16:47,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:16:47,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:43" (1/1) ... [2021-11-23 17:16:47,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:43" (1/1) ... [2021-11-23 17:16:47,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:43" (1/1) ... [2021-11-23 17:16:47,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:43" (1/1) ... [2021-11-23 17:16:49,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:43" (1/1) ... [2021-11-23 17:16:49,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:43" (1/1) ... [2021-11-23 17:16:49,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:43" (1/1) ... [2021-11-23 17:16:50,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:16:50,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:16:50,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:16:50,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:16:50,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:43" (1/1) ... [2021-11-23 17:16:50,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:16:50,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:16:50,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:16:50,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:16:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:16:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:16:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:16:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:16:50,670 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:16:50,671 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:17:28,798 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:17:28,930 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 17:17:28,937 INFO L158 Benchmark]: Toolchain (without parser) took 66154.62ms. Allocated memory was 299.9MB in the beginning and 9.1GB in the end (delta: 8.8GB). Free memory was 158.7MB in the beginning and 7.5GB in the end (delta: -7.3GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2021-11-23 17:17:28,938 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 115.3MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:17:28,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 20695.34ms. Allocated memory was 299.9MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 158.7MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 767.6MB. Max. memory is 16.1GB. [2021-11-23 17:17:28,943 INFO L158 Benchmark]: Boogie Procedure Inliner took 3580.06ms. Allocated memory was 1.9GB in the beginning and 3.8GB in the end (delta: 1.9GB). Free memory was 1.2GB in the beginning and 2.8GB in the end (delta: -1.6GB). Peak memory consumption was 468.7MB. Max. memory is 16.1GB. [2021-11-23 17:17:28,944 INFO L158 Benchmark]: Boogie Preprocessor took 3366.67ms. Allocated memory was 3.8GB in the beginning and 6.8GB in the end (delta: 3.1GB). Free memory was 2.8GB in the beginning and 5.6GB in the end (delta: -2.8GB). Peak memory consumption was 367.0MB. Max. memory is 16.1GB. [2021-11-23 17:17:28,945 INFO L158 Benchmark]: RCFGBuilder took 38508.06ms. Allocated memory was 6.8GB in the beginning and 9.1GB in the end (delta: 2.3GB). Free memory was 5.6GB in the beginning and 7.5GB in the end (delta: -1.9GB). Peak memory consumption was 660.6MB. Max. memory is 16.1GB. [2021-11-23 17:17:28,956 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 115.3MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 20695.34ms. Allocated memory was 299.9MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 158.7MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 767.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 3580.06ms. Allocated memory was 1.9GB in the beginning and 3.8GB in the end (delta: 1.9GB). Free memory was 1.2GB in the beginning and 2.8GB in the end (delta: -1.6GB). Peak memory consumption was 468.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 3366.67ms. Allocated memory was 3.8GB in the beginning and 6.8GB in the end (delta: 3.1GB). Free memory was 2.8GB in the beginning and 5.6GB in the end (delta: -2.8GB). Peak memory consumption was 367.0MB. Max. memory is 16.1GB. * RCFGBuilder took 38508.06ms. Allocated memory was 6.8GB in the beginning and 9.1GB in the end (delta: 2.3GB). Free memory was 5.6GB in the beginning and 7.5GB in the end (delta: -1.9GB). Peak memory consumption was 660.6MB. 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 17:17:29,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/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_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/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_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem101_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/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_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/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 bc0c987e1a7ba46775705505d09cb94d967fadd6d9e6218a822aa4c4e061e2a4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:17:31,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:17:31,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:17:31,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:17:31,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:17:31,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:17:31,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:17:31,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:17:31,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:17:31,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:17:31,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:17:31,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:17:31,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:17:31,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:17:31,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:17:31,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:17:31,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:17:31,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:17:31,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:17:31,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:17:31,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:17:31,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:17:31,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:17:31,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:17:31,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:17:31,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:17:31,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:17:31,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:17:31,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:17:31,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:17:31,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:17:31,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:17:31,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:17:31,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:17:31,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:17:31,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:17:31,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:17:31,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:17:31,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:17:31,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:17:31,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:17:31,906 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:17:31,954 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:17:31,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:17:31,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:17:31,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:17:31,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:17:31,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:17:31,957 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:17:31,958 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:17:31,958 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:17:31,958 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:17:31,959 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:17:31,960 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:17:31,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:17:31,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:17:31,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:17:31,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:17:31,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:17:31,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:17:31,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:17:31,963 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:17:31,963 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:17:31,964 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:17:31,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:17:31,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:17:31,964 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:17:31,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:17:31,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:17:31,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:17:31,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:17:31,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:17:31,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:17:31,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:17:31,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:17:31,967 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:17:31,968 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:17:31,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:17:31,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:17:31,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:17:31,969 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_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc0c987e1a7ba46775705505d09cb94d967fadd6d9e6218a822aa4c4e061e2a4 [2021-11-23 17:17:32,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:17:32,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:17:32,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:17:32,414 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:17:32,419 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:17:32,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-programs/Problem101_label01.c [2021-11-23 17:17:32,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/data/7631309ba/2b9f89f17c71442cb192bf36d0979f36/FLAG522ef6916 [2021-11-23 17:17:35,793 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:17:35,794 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/sv-benchmarks/c/eca-programs/Problem101_label01.c [2021-11-23 17:17:35,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/data/7631309ba/2b9f89f17c71442cb192bf36d0979f36/FLAG522ef6916 [2021-11-23 17:17:36,442 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/data/7631309ba/2b9f89f17c71442cb192bf36d0979f36 [2021-11-23 17:17:36,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:17:36,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:17:36,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:17:36,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:17:36,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:17:36,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:17:36" (1/1) ... [2021-11-23 17:17:36,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b63fd10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:36, skipping insertion in model container [2021-11-23 17:17:36,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:17:36" (1/1) ... [2021-11-23 17:17:36,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:17:37,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:17:50,823 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_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/sv-benchmarks/c/eca-programs/Problem101_label01.c[2766796,2766809] [2021-11-23 17:17:50,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:17:50,914 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:17:59,904 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_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/sv-benchmarks/c/eca-programs/Problem101_label01.c[2766796,2766809] [2021-11-23 17:17:59,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:18:01,892 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:18:01,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:01 WrapperNode [2021-11-23 17:18:01,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:18:01,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:18:01,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:18:01,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:18:01,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:01" (1/1) ... [2021-11-23 17:18:02,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:01" (1/1) ... [2021-11-23 17:18:05,795 INFO L137 Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83733 [2021-11-23 17:18:05,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:18:05,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:18:05,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:18:05,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:18:05,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:01" (1/1) ... [2021-11-23 17:18:05,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:01" (1/1) ... [2021-11-23 17:18:06,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:01" (1/1) ... [2021-11-23 17:18:06,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:01" (1/1) ... [2021-11-23 17:18:08,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:01" (1/1) ... [2021-11-23 17:18:08,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:01" (1/1) ... [2021-11-23 17:18:08,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:01" (1/1) ... [2021-11-23 17:18:09,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:18:09,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:18:09,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:18:09,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:18:09,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:01" (1/1) ... [2021-11-23 17:18:09,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:18:09,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:18:09,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:18:09,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:18:09,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:18:09,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:18:09,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:18:09,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:18:09,997 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:18:09,999 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:19:15,455 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:19:15,555 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:19:15,555 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 17:19:15,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:19:15 BoogieIcfgContainer [2021-11-23 17:19:15,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:19:15,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:19:15,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:19:15,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:19:15,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:17:36" (1/3) ... [2021-11-23 17:19:15,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ed4fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:19:15, skipping insertion in model container [2021-11-23 17:19:15,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:18:01" (2/3) ... [2021-11-23 17:19:15,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ed4fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:19:15, skipping insertion in model container [2021-11-23 17:19:15,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:19:15" (3/3) ... [2021-11-23 17:19:15,579 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem101_label01.c [2021-11-23 17:19:15,586 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:19:15,586 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:19:15,683 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:19:15,691 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 17:19:15,691 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:19:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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 17:19:17,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10089 [2021-11-23 17:19:17,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:19:17,226 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:19:17,230 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:19:17,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:19:17,251 INFO L85 PathProgramCache]: Analyzing trace with hash -461362654, now seen corresponding path program 1 times [2021-11-23 17:19:17,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:19:17,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571464824] [2021-11-23 17:19:17,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:19:17,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:19:17,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:19:17,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:19:17,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:19:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:19:23,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 10233 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:19:23,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:20:33,411 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 17:20:33,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:20:33,413 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:20:33,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571464824] [2021-11-23 17:20:33,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571464824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:20:33,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:20:33,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:20:33,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800676021] [2021-11-23 17:20:33,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:20:33,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:20:33,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:20:33,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:20:33,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:20:33,526 INFO L87 Difference]: Start difference. First operand has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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 3362.6666666666665) internal successors, (10088), 2 states have internal predecessors, (10088), 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 17:21:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:21:50,490 INFO L93 Difference]: Finished difference Result 30716 states and 61145 transitions. [2021-11-23 17:21:50,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:21:50,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3362.6666666666665) internal successors, (10088), 2 states have internal predecessors, (10088), 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 10088 [2021-11-23 17:21:50,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:21:50,733 INFO L225 Difference]: With dead ends: 30716 [2021-11-23 17:21:50,734 INFO L226 Difference]: Without dead ends: 20384 [2021-11-23 17:21:50,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10087 GetRequests, 10086 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 17:21:50,766 INFO L933 BasicCegarLoop]: 5117 mSDtfsCounter, 1996 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 33578 mSolverCounterSat, 7054 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1996 SdHoareTripleChecker+Valid, 5170 SdHoareTripleChecker+Invalid, 40632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7054 IncrementalHoareTripleChecker+Valid, 33578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:21:50,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1996 Valid, 5170 Invalid, 40632 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7054 Valid, 33578 Invalid, 0 Unknown, 0 Unchecked, 75.5s Time] [2021-11-23 17:21:50,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20384 states. [2021-11-23 17:21:51,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384. [2021-11-23 17:21:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20384 states, 20383 states have (on average 1.7444929598194574) internal successors, (35558), 20383 states have internal predecessors, (35558), 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 17:21:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 35558 transitions. [2021-11-23 17:21:51,652 INFO L78 Accepts]: Start accepts. Automaton has 20384 states and 35558 transitions. Word has length 10088 [2021-11-23 17:21:51,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:21:51,679 INFO L470 AbstractCegarLoop]: Abstraction has 20384 states and 35558 transitions. [2021-11-23 17:21:51,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3362.6666666666665) internal successors, (10088), 2 states have internal predecessors, (10088), 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 17:21:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 20384 states and 35558 transitions. [2021-11-23 17:21:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10093 [2021-11-23 17:21:53,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:21:53,064 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:21:53,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:21:53,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:21:53,266 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:21:53,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:21:53,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1052379062, now seen corresponding path program 1 times [2021-11-23 17:21:53,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:21:53,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691492002] [2021-11-23 17:21:53,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:21:53,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:21:53,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:21:53,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:21:53,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:21:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:21:57,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 10264 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:21:57,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:22:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:22:08,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:22:08,616 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:22:08,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691492002] [2021-11-23 17:22:08,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691492002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:22:08,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:22:08,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:22:08,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620544601] [2021-11-23 17:22:08,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:22:08,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:22:08,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:22:08,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:22:08,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:22:08,648 INFO L87 Difference]: Start difference. First operand 20384 states and 35558 transitions. Second operand has 3 states, 3 states have (on average 3364.0) internal successors, (10092), 2 states have internal predecessors, (10092), 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 17:23:15,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:23:15,219 INFO L93 Difference]: Finished difference Result 61146 states and 106669 transitions. [2021-11-23 17:23:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:23:15,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3364.0) internal successors, (10092), 2 states have internal predecessors, (10092), 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 10092 [2021-11-23 17:23:15,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:23:15,331 INFO L225 Difference]: With dead ends: 61146 [2021-11-23 17:23:15,331 INFO L226 Difference]: Without dead ends: 40764 [2021-11-23 17:23:15,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10091 GetRequests, 10090 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 17:23:15,359 INFO L933 BasicCegarLoop]: 5085 mSDtfsCounter, 13140 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29481 mSolverCounterSat, 11039 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13140 SdHoareTripleChecker+Valid, 5134 SdHoareTripleChecker+Invalid, 40520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11039 IncrementalHoareTripleChecker+Valid, 29481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.4s IncrementalHoareTripleChecker+Time [2021-11-23 17:23:15,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13140 Valid, 5134 Invalid, 40520 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11039 Valid, 29481 Invalid, 0 Unknown, 0 Unchecked, 65.4s Time] [2021-11-23 17:23:15,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40764 states. [2021-11-23 17:23:16,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764. [2021-11-23 17:23:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40764 states, 40763 states have (on average 1.560115791281309) internal successors, (63595), 40763 states have internal predecessors, (63595), 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 17:23:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 63595 transitions. [2021-11-23 17:23:16,117 INFO L78 Accepts]: Start accepts. Automaton has 40764 states and 63595 transitions. Word has length 10092 [2021-11-23 17:23:16,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:23:16,121 INFO L470 AbstractCegarLoop]: Abstraction has 40764 states and 63595 transitions. [2021-11-23 17:23:16,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3364.0) internal successors, (10092), 2 states have internal predecessors, (10092), 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 17:23:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 40764 states and 63595 transitions. [2021-11-23 17:23:17,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10094 [2021-11-23 17:23:17,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:23:17,390 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:23:17,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 17:23:17,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:23:17,611 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:23:17,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:23:17,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2054819818, now seen corresponding path program 1 times [2021-11-23 17:23:17,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:23:17,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895600222] [2021-11-23 17:23:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:23:17,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:23:17,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:23:17,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:23:17,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 17:23:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:23:21,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 10263 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:23:21,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:23:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:23:33,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:23:33,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:23:33,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895600222] [2021-11-23 17:23:33,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895600222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:23:33,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:23:33,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:23:33,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477733065] [2021-11-23 17:23:33,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:23:33,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:23:33,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:23:33,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:23:33,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:23:33,803 INFO L87 Difference]: Start difference. First operand 40764 states and 63595 transitions. Second operand has 3 states, 3 states have (on average 3364.3333333333335) internal successors, (10093), 2 states have internal predecessors, (10093), 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 17:24:51,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:24:51,256 INFO L93 Difference]: Finished difference Result 122286 states and 190780 transitions. [2021-11-23 17:24:51,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:24:51,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3364.3333333333335) internal successors, (10093), 2 states have internal predecessors, (10093), 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 10093 [2021-11-23 17:24:51,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:24:51,464 INFO L225 Difference]: With dead ends: 122286 [2021-11-23 17:24:51,464 INFO L226 Difference]: Without dead ends: 81524 [2021-11-23 17:24:51,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10092 GetRequests, 10091 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 17:24:51,528 INFO L933 BasicCegarLoop]: 8751 mSDtfsCounter, 11052 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30122 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11052 SdHoareTripleChecker+Valid, 8800 SdHoareTripleChecker+Invalid, 41799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 30122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.9s IncrementalHoareTripleChecker+Time [2021-11-23 17:24:51,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11052 Valid, 8800 Invalid, 41799 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11677 Valid, 30122 Invalid, 0 Unknown, 0 Unchecked, 75.9s Time] [2021-11-23 17:24:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81524 states. [2021-11-23 17:24:52,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81524 to 81524. [2021-11-23 17:24:53,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81524 states, 81523 states have (on average 1.4289096328643451) internal successors, (116489), 81523 states have internal predecessors, (116489), 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 17:24:53,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81524 states to 81524 states and 116489 transitions. [2021-11-23 17:24:53,177 INFO L78 Accepts]: Start accepts. Automaton has 81524 states and 116489 transitions. Word has length 10093 [2021-11-23 17:24:53,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:24:53,180 INFO L470 AbstractCegarLoop]: Abstraction has 81524 states and 116489 transitions. [2021-11-23 17:24:53,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3364.3333333333335) internal successors, (10093), 2 states have internal predecessors, (10093), 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 17:24:53,183 INFO L276 IsEmpty]: Start isEmpty. Operand 81524 states and 116489 transitions. [2021-11-23 17:24:54,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10100 [2021-11-23 17:24:54,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:24:54,834 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:24:54,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 17:24:55,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:24:55,039 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:24:55,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:24:55,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1505179877, now seen corresponding path program 1 times [2021-11-23 17:24:55,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:24:55,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836562820] [2021-11-23 17:24:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:24:55,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:24:55,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:24:55,131 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:24:55,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 17:24:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:24:59,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 10270 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:24:59,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:25:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:25:12,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:25:12,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:25:12,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836562820] [2021-11-23 17:25:12,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836562820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:25:12,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:25:12,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:25:12,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577084322] [2021-11-23 17:25:12,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:25:12,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:25:12,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:25:12,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:25:12,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:25:12,896 INFO L87 Difference]: Start difference. First operand 81524 states and 116489 transitions. Second operand has 3 states, 3 states have (on average 3366.3333333333335) internal successors, (10099), 2 states have internal predecessors, (10099), 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 17:26:23,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:26:23,616 INFO L93 Difference]: Finished difference Result 244566 states and 349462 transitions. [2021-11-23 17:26:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:26:23,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3366.3333333333335) internal successors, (10099), 2 states have internal predecessors, (10099), 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 10099 [2021-11-23 17:26:23,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:26:24,114 INFO L225 Difference]: With dead ends: 244566 [2021-11-23 17:26:24,115 INFO L226 Difference]: Without dead ends: 163044 [2021-11-23 17:26:24,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10098 GetRequests, 10097 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 17:26:24,213 INFO L933 BasicCegarLoop]: 9374 mSDtfsCounter, 10615 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31721 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10615 SdHoareTripleChecker+Valid, 9423 SdHoareTripleChecker+Invalid, 42222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 31721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.9s IncrementalHoareTripleChecker+Time [2021-11-23 17:26:24,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10615 Valid, 9423 Invalid, 42222 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [10501 Valid, 31721 Invalid, 0 Unknown, 0 Unchecked, 68.9s Time] [2021-11-23 17:26:24,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163044 states. [2021-11-23 17:26:26,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163044 to 163044. [2021-11-23 17:26:26,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163044 states, 163043 states have (on average 1.3290420318566267) internal successors, (216691), 163043 states have internal predecessors, (216691), 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 17:26:26,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163044 states to 163044 states and 216691 transitions. [2021-11-23 17:26:26,953 INFO L78 Accepts]: Start accepts. Automaton has 163044 states and 216691 transitions. Word has length 10099 [2021-11-23 17:26:26,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:26:26,956 INFO L470 AbstractCegarLoop]: Abstraction has 163044 states and 216691 transitions. [2021-11-23 17:26:26,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3366.3333333333335) internal successors, (10099), 2 states have internal predecessors, (10099), 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 17:26:26,957 INFO L276 IsEmpty]: Start isEmpty. Operand 163044 states and 216691 transitions. [2021-11-23 17:26:28,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10117 [2021-11-23 17:26:28,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:26:28,929 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:26:28,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-23 17:26:29,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:26:29,155 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:26:29,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:26:29,158 INFO L85 PathProgramCache]: Analyzing trace with hash -728361842, now seen corresponding path program 1 times [2021-11-23 17:26:29,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:26:29,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268535389] [2021-11-23 17:26:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:26:29,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:26:29,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:26:29,234 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:26:29,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb435b0-d1ef-4cf3-a6db-b08f1fb81421/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 17:26:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:26:33,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 10289 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:26:33,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:26:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:26:45,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:26:45,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:26:45,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268535389] [2021-11-23 17:26:45,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268535389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:26:45,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:26:45,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:26:45,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122268627] [2021-11-23 17:26:45,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:26:45,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:26:45,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:26:45,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:26:45,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:26:45,063 INFO L87 Difference]: Start difference. First operand 163044 states and 216691 transitions. Second operand has 3 states, 3 states have (on average 3372.0) internal successors, (10116), 2 states have internal predecessors, (10116), 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)