./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8 --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 dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 ........................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8 --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 dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 .............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:00:37,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:00:37,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:00:37,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:00:37,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:00:37,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:00:37,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:00:37,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:00:37,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:00:37,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:00:37,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:00:37,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:00:37,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:00:37,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:00:37,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:00:37,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:00:37,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:00:37,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:00:37,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:00:37,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:00:37,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:00:37,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:00:37,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:00:37,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:00:37,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:00:37,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:00:37,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:00:37,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:00:37,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:00:37,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:00:37,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:00:37,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:00:37,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:00:37,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:00:37,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:00:37,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:00:37,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:00:37,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:00:37,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:00:37,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:00:37,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:00:37,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:00:37,476 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:00:37,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:00:37,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:00:37,477 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:00:37,477 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:00:37,478 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:00:37,478 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:00:37,478 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:00:37,478 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:00:37,478 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:00:37,479 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:00:37,479 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:00:37,479 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:00:37,479 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:00:37,479 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:00:37,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:00:37,480 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:00:37,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:00:37,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:00:37,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:00:37,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:00:37,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:00:37,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:00:37,482 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:00:37,482 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:00:37,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:00:37,482 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:00:37,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:00:37,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:00:37,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:00:37,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:00:37,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:00:37,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:00:37,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:00:37,484 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:00:37,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:00:37,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:00:37,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:00:37,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:00:37,485 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_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 [2021-10-13 08:00:37,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:00:37,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:00:37,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:00:37,833 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:00:37,833 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:00:37,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2021-10-13 08:00:37,915 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/data/fa204b745/80b4b40be4be4eacb317aedcd9894038/FLAG4034c1bdf [2021-10-13 08:00:38,390 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:00:38,393 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2021-10-13 08:00:38,405 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/data/fa204b745/80b4b40be4be4eacb317aedcd9894038/FLAG4034c1bdf [2021-10-13 08:00:38,751 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/data/fa204b745/80b4b40be4be4eacb317aedcd9894038 [2021-10-13 08:00:38,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:00:38,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:00:38,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:00:38,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:00:38,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:00:38,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:00:38" (1/1) ... [2021-10-13 08:00:38,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfb6168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:38, skipping insertion in model container [2021-10-13 08:00:38,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:00:38" (1/1) ... [2021-10-13 08:00:38,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:00:38,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:00:38,952 WARN L228 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_dce7da9a-9426-469d-b6e8-f2a111a6bd47/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-10-13 08:00:38,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:00:38,970 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:00:38,984 WARN L228 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_dce7da9a-9426-469d-b6e8-f2a111a6bd47/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-10-13 08:00:38,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:00:39,002 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:00:39,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:39 WrapperNode [2021-10-13 08:00:39,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:00:39,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:00:39,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:00:39,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:00:39,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:39" (1/1) ... [2021-10-13 08:00:39,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:39" (1/1) ... [2021-10-13 08:00:39,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:00:39,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:00:39,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:00:39,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:00:39,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:39" (1/1) ... [2021-10-13 08:00:39,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:39" (1/1) ... [2021-10-13 08:00:39,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:39" (1/1) ... [2021-10-13 08:00:39,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:39" (1/1) ... [2021-10-13 08:00:39,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:39" (1/1) ... [2021-10-13 08:00:39,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:39" (1/1) ... [2021-10-13 08:00:39,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:39" (1/1) ... [2021-10-13 08:00:39,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:00:39,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:00:39,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:00:39,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:00:39,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:39" (1/1) ... [2021-10-13 08:00:39,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:00:39,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:00:39,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:00:39,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:00:39,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:00:39,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:00:39,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:00:39,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:00:39,421 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:00:39,422 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 08:00:39,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:00:39 BoogieIcfgContainer [2021-10-13 08:00:39,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:00:39,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:00:39,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:00:39,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:00:39,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:00:38" (1/3) ... [2021-10-13 08:00:39,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d81bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:00:39, skipping insertion in model container [2021-10-13 08:00:39,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:39" (2/3) ... [2021-10-13 08:00:39,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d81bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:00:39, skipping insertion in model container [2021-10-13 08:00:39,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:00:39" (3/3) ... [2021-10-13 08:00:39,452 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.i [2021-10-13 08:00:39,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:00:39,470 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:00:39,523 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:00:39,531 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, mConcurrency=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 [2021-10-13 08:00:39,531 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:00:39,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-10-13 08:00:39,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 08:00:39,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:39,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 08:00:39,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:39,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:39,591 INFO L82 PathProgramCache]: Analyzing trace with hash 64896298, now seen corresponding path program 1 times [2021-10-13 08:00:39,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:00:39,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836378114] [2021-10-13 08:00:39,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:39,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:00:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:39,861 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:00:39,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836378114] [2021-10-13 08:00:39,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836378114] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:39,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:00:39,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:00:39,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341234349] [2021-10-13 08:00:39,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:00:39,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:00:39,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:00:39,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:00:39,897 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-13 08:00:39,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:39,924 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-10-13 08:00:39,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:00:39,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-10-13 08:00:39,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:39,934 INFO L225 Difference]: With dead ends: 16 [2021-10-13 08:00:39,934 INFO L226 Difference]: Without dead ends: 7 [2021-10-13 08:00:39,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:00:39,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-13 08:00:39,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-13 08:00:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2021-10-13 08:00:39,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-13 08:00:39,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-13 08:00:39,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:39,968 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-13 08:00:39,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-13 08:00:39,969 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-13 08:00:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:00:39,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:39,970 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:00:39,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:00:39,971 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:39,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:39,972 INFO L82 PathProgramCache]: Analyzing trace with hash 2011857312, now seen corresponding path program 1 times [2021-10-13 08:00:39,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:00:39,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600866039] [2021-10-13 08:00:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:39,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:00:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:40,091 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:00:40,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600866039] [2021-10-13 08:00:40,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600866039] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:00:40,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801497095] [2021-10-13 08:00:40,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:40,093 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:00:40,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:00:40,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:00:40,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 08:00:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:40,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:00:40,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:40,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:40,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801497095] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:00:40,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1636619248] [2021-10-13 08:00:40,820 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-13 08:00:40,820 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 08:00:40,824 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 08:00:40,829 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 08:00:40,829 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 08:00:40,855 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:00:40,856 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:00:40,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:00:40,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-13 08:00:40,859 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:00:40,859 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:00:40,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-13 08:00:40,862 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-13 08:00:40,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:00:40,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:00:40,926 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-13 08:00:40,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 08:00:40,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:00:40,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 08:00:40,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:00:40,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 08:00:40,936 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 08:00:40,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:00:40,976 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:00:40,978 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:00:40,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-13 08:00:40,980 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 08:00:40,980 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:110, output treesize:98 [2021-10-13 08:00:41,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:41,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:00:41,202 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_8| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) 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) [2021-10-13 08:00:41,207 INFO L168 Benchmark]: Toolchain (without parser) took 2451.01 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 53.4 MB in the beginning and 68.1 MB in the end (delta: -14.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:41,208 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:00:41,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.65 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 53.2 MB in the beginning and 101.8 MB in the end (delta: -48.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:41,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.87 ms. Allocated memory is still 125.8 MB. Free memory was 101.8 MB in the beginning and 100.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:41,211 INFO L168 Benchmark]: Boogie Preprocessor took 22.01 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 99.2 MB in the end (delta: 895.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:41,212 INFO L168 Benchmark]: RCFGBuilder took 362.94 ms. Allocated memory is still 125.8 MB. Free memory was 99.2 MB in the beginning and 88.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:41,212 INFO L168 Benchmark]: TraceAbstraction took 1762.95 ms. Allocated memory is still 125.8 MB. Free memory was 87.4 MB in the beginning and 68.1 MB in the end (delta: 19.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:41,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.65 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 53.2 MB in the beginning and 101.8 MB in the end (delta: -48.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.87 ms. Allocated memory is still 125.8 MB. Free memory was 101.8 MB in the beginning and 100.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.01 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 99.2 MB in the end (delta: 895.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 362.94 ms. Allocated memory is still 125.8 MB. Free memory was 99.2 MB in the beginning and 88.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1762.95 ms. Allocated memory is still 125.8 MB. Free memory was 87.4 MB in the beginning and 68.1 MB in the end (delta: 19.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_8| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_8|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 08:00:41,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:00:43,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:00:43,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:00:43,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:00:43,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:00:43,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:00:43,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:00:43,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:00:43,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:00:43,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:00:43,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:00:43,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:00:43,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:00:43,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:00:43,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:00:43,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:00:43,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:00:43,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:00:43,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:00:43,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:00:43,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:00:43,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:00:43,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:00:43,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:00:43,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:00:43,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:00:43,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:00:43,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:00:43,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:00:43,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:00:43,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:00:43,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:00:43,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:00:43,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:00:43,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:00:43,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:00:43,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:00:43,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:00:43,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:00:43,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:00:43,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:00:43,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:00:43,776 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:00:43,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:00:43,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:00:43,778 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:00:43,778 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:00:43,778 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:00:43,778 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:00:43,778 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:00:43,779 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:00:43,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:00:43,782 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:00:43,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:00:43,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:00:43,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:00:43,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:00:43,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:00:43,783 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:00:43,783 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:00:43,784 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:00:43,784 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:00:43,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:00:43,784 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:00:43,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:00:43,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:00:43,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:00:43,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:00:43,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:00:43,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:00:43,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:00:43,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:00:43,786 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:00:43,786 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:00:43,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:00:43,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:00:43,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:00:43,788 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_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 [2021-10-13 08:00:44,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:00:44,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:00:44,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:00:44,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:00:44,178 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:00:44,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2021-10-13 08:00:44,253 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/data/3bcb20ed2/2b1a197fb196439fadd983b4de333d3e/FLAGecf00d1da [2021-10-13 08:00:44,726 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:00:44,727 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2021-10-13 08:00:44,733 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/data/3bcb20ed2/2b1a197fb196439fadd983b4de333d3e/FLAGecf00d1da [2021-10-13 08:00:44,753 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/data/3bcb20ed2/2b1a197fb196439fadd983b4de333d3e [2021-10-13 08:00:44,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:00:44,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:00:44,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:00:44,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:00:44,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:00:44,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:00:44" (1/1) ... [2021-10-13 08:00:44,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c9ac6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:44, skipping insertion in model container [2021-10-13 08:00:44,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:00:44" (1/1) ... [2021-10-13 08:00:44,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:00:44,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:00:44,995 WARN L228 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_dce7da9a-9426-469d-b6e8-f2a111a6bd47/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-10-13 08:00:45,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:00:45,031 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:00:45,047 WARN L228 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_dce7da9a-9426-469d-b6e8-f2a111a6bd47/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-10-13 08:00:45,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:00:45,086 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:00:45,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:45 WrapperNode [2021-10-13 08:00:45,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:00:45,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:00:45,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:00:45,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:00:45,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:45" (1/1) ... [2021-10-13 08:00:45,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:45" (1/1) ... [2021-10-13 08:00:45,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:00:45,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:00:45,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:00:45,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:00:45,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:45" (1/1) ... [2021-10-13 08:00:45,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:45" (1/1) ... [2021-10-13 08:00:45,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:45" (1/1) ... [2021-10-13 08:00:45,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:45" (1/1) ... [2021-10-13 08:00:45,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:45" (1/1) ... [2021-10-13 08:00:45,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:45" (1/1) ... [2021-10-13 08:00:45,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:45" (1/1) ... [2021-10-13 08:00:45,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:00:45,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:00:45,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:00:45,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:00:45,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:45" (1/1) ... [2021-10-13 08:00:45,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:00:45,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:00:45,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:00:45,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:00:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:00:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:00:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:00:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:00:45,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:00:45,550 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 08:00:45,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:00:45 BoogieIcfgContainer [2021-10-13 08:00:45,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:00:45,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:00:45,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:00:45,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:00:45,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:00:44" (1/3) ... [2021-10-13 08:00:45,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319ef97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:00:45, skipping insertion in model container [2021-10-13 08:00:45,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:00:45" (2/3) ... [2021-10-13 08:00:45,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319ef97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:00:45, skipping insertion in model container [2021-10-13 08:00:45,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:00:45" (3/3) ... [2021-10-13 08:00:45,560 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.i [2021-10-13 08:00:45,565 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:00:45,578 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:00:45,657 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:00:45,663 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, mConcurrency=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 [2021-10-13 08:00:45,664 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:00:45,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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) [2021-10-13 08:00:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 08:00:45,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:45,682 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:00:45,683 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:45,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1807274183, now seen corresponding path program 1 times [2021-10-13 08:00:45,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:45,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388130705] [2021-10-13 08:00:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:45,701 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:45,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:45,705 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:45,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:00:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:45,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 08:00:45,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:45,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:45,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:45,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:45,849 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:45,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388130705] [2021-10-13 08:00:45,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388130705] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:45,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:00:45,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:00:45,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934471032] [2021-10-13 08:00:45,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:00:45,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:45,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:00:45,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:00:45,873 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-13 08:00:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:45,885 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-13 08:00:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:00:45,887 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-10-13 08:00:45,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:45,894 INFO L225 Difference]: With dead ends: 21 [2021-10-13 08:00:45,894 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 08:00:45,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:00:45,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 08:00:45,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 08:00:45,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-10-13 08:00:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-13 08:00:45,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2021-10-13 08:00:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:45,926 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-13 08:00:45,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-13 08:00:45,926 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-13 08:00:45,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 08:00:45,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:45,927 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:00:45,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:46,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:00:46,138 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:46,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:46,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1806976273, now seen corresponding path program 1 times [2021-10-13 08:00:46,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:46,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974673446] [2021-10-13 08:00:46,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:46,140 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:46,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:46,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:46,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:00:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:46,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:00:46,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:46,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:46,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:46,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974673446] [2021-10-13 08:00:46,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974673446] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:00:46,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:00:46,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:00:46,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377290775] [2021-10-13 08:00:46,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:00:46,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:46,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:00:46,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:00:46,309 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-13 08:00:46,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:46,334 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-13 08:00:46,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:00:46,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 7 [2021-10-13 08:00:46,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:46,336 INFO L225 Difference]: With dead ends: 14 [2021-10-13 08:00:46,336 INFO L226 Difference]: Without dead ends: 10 [2021-10-13 08:00:46,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:00:46,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-13 08:00:46,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-13 08:00:46,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2021-10-13 08:00:46,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-13 08:00:46,340 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2021-10-13 08:00:46,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:46,340 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-13 08:00:46,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-13 08:00:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-13 08:00:46,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 08:00:46,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:00:46,341 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:00:46,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:46,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:00:46,552 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:00:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:00:46,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1387754644, now seen corresponding path program 1 times [2021-10-13 08:00:46,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:00:46,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359467934] [2021-10-13 08:00:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:46,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:00:46,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:00:46,556 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:00:46,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:00:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:46,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 08:00:46,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:47,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:47,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:48,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:00:48,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359467934] [2021-10-13 08:00:48,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359467934] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:00:48,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1094044447] [2021-10-13 08:00:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:48,605 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:00:48,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:00:48,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:00:48,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-13 08:00:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:48,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 08:00:48,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:49,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:49,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1094044447] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:00:49,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587172309] [2021-10-13 08:00:49,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:00:49,444 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:00:49,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:00:49,447 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:00:49,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 08:00:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:00:49,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 08:00:49,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:00:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:50,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:00:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:00:50,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587172309] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:00:50,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:00:50,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2021-10-13 08:00:50,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948367837] [2021-10-13 08:00:50,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 08:00:50,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:00:50,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 08:00:50,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-13 08:00:50,213 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-10-13 08:00:51,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:00:51,112 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-13 08:00:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:00:51,112 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 9 [2021-10-13 08:00:51,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:00:51,113 INFO L225 Difference]: With dead ends: 13 [2021-10-13 08:00:51,113 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:00:51,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1448.6ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-13 08:00:51,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:00:51,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:00:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-13 08:00:51,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:00:51,115 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-13 08:00:51,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:00:51,115 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:00:51,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-10-13 08:00:51,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:00:51,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:00:51,118 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:00:51,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:51,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-10-13 08:00:51,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:00:51,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:00:51,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 08:00:51,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:00:51,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:00:51,893 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 08:00:51,893 INFO L860 garLoopResultBuilder]: At program point L29(lines 19 30) the Hoare annotation is: true [2021-10-13 08:00:51,894 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-13 08:00:51,894 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-13 08:00:51,894 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 08:00:51,894 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 08:00:51,894 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 08:00:51,894 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-10-13 08:00:51,895 INFO L853 garLoopResultBuilder]: At program point L26-2(lines 24 27) the Hoare annotation is: (or (let ((.cse0 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~y~0)) (.cse1 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~x~0))) (and (bvslt .cse0 ULTIMATE.start_main_~n~0) (bvsgt ULTIMATE.start_main_~x~0 .cse0) (bvsle .cse1 .cse0) (bvsge .cse1 (_ bv0 32)))) (and (bvslt ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~n~0) (bvsle ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (bvsge ULTIMATE.start_main_~x~0 (_ bv0 32)))) [2021-10-13 08:00:51,895 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-13 08:00:51,895 INFO L857 garLoopResultBuilder]: For program point L24-2(lines 24 27) no Hoare annotation was computed. [2021-10-13 08:00:51,895 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-13 08:00:51,895 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-13 08:00:51,899 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:00:51,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:00:51 BoogieIcfgContainer [2021-10-13 08:00:51,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:00:51,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:00:51,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:00:51,913 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:00:51,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:00:45" (3/4) ... [2021-10-13 08:00:51,916 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 08:00:51,925 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 08:00:51,925 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 08:00:51,925 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:00:51,926 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:00:51,958 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:00:51,958 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:00:51,960 INFO L168 Benchmark]: Toolchain (without parser) took 7201.01 ms. Allocated memory was 56.6 MB in the beginning and 86.0 MB in the end (delta: 29.4 MB). Free memory was 33.8 MB in the beginning and 57.2 MB in the end (delta: -23.4 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:51,960 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 56.6 MB. Free memory was 37.5 MB in the beginning and 37.4 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:00:51,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.65 ms. Allocated memory is still 56.6 MB. Free memory was 33.6 MB in the beginning and 40.9 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:51,961 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.71 ms. Allocated memory is still 56.6 MB. Free memory was 40.9 MB in the beginning and 39.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:51,962 INFO L168 Benchmark]: Boogie Preprocessor took 45.90 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 38.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:00:51,962 INFO L168 Benchmark]: RCFGBuilder took 367.88 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 29.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:51,963 INFO L168 Benchmark]: TraceAbstraction took 6357.90 ms. Allocated memory was 56.6 MB in the beginning and 86.0 MB in the end (delta: 29.4 MB). Free memory was 28.6 MB in the beginning and 59.8 MB in the end (delta: -31.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:00:51,963 INFO L168 Benchmark]: Witness Printer took 46.24 ms. Allocated memory is still 86.0 MB. Free memory was 59.8 MB in the beginning and 57.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:00:51,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 56.6 MB. Free memory was 37.5 MB in the beginning and 37.4 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.65 ms. Allocated memory is still 56.6 MB. Free memory was 33.6 MB in the beginning and 40.9 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.71 ms. Allocated memory is still 56.6 MB. Free memory was 40.9 MB in the beginning and 39.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.90 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 38.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 367.88 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 29.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6357.90 ms. Allocated memory was 56.6 MB in the beginning and 86.0 MB in the end (delta: 29.4 MB). Free memory was 28.6 MB in the beginning and 59.8 MB in the end (delta: -31.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 46.24 ms. Allocated memory is still 86.0 MB. Free memory was 59.8 MB in the beginning and 57.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6244.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 9.5ms, AutomataDifference: 983.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 164.7ms, InitialAbstractionConstructionTime: 8.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 8 SDslu, 16 SDs, 0 SdLazy, 57 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 508.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1463.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 35 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 37.8ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 121.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 47.8ms SsaConstructionTime, 370.1ms SatisfiabilityAnalysisTime, 3302.4ms InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 3 QuantifiedInterpolants, 416 SizeOfPredicates, 26 NumberOfNonLiveVariables, 152 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((~bvslt32(~bvadd64(4294967295bv32, y), n) && ~bvsgt32(x, ~bvadd64(4294967295bv32, y))) && ~bvsle32(~bvadd64(4294967295bv32, x), ~bvadd64(4294967295bv32, y))) && ~bvsge32(~bvadd64(4294967295bv32, x), 0bv32)) || ((~bvslt32(y, n) && ~bvsle32(x, y)) && ~bvsge32(x, 0bv32)) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 08:00:52,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce7da9a-9426-469d-b6e8-f2a111a6bd47/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...