./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.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_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/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_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/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_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/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 427ff35e267ead3beebd34c045ef64a160789f85 ...................................................................................................................................................................................................................................................................................................................................................................................................................... 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_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/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_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/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_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/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 427ff35e267ead3beebd34c045ef64a160789f85 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:24:52,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:24:52,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:24:52,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:24:52,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:24:52,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:24:52,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:24:52,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:24:52,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:24:52,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:24:52,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:24:52,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:24:52,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:24:52,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:24:52,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:24:52,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:24:52,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:24:52,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:24:52,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:24:52,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:24:52,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:24:52,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:24:52,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:24:52,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:24:52,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:24:52,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:24:52,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:24:52,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:24:52,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:24:52,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:24:52,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:24:52,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:24:52,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:24:52,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:24:52,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:24:52,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:24:52,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:24:52,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:24:52,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:24:52,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:24:52,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:24:52,657 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:24:52,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:24:52,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:24:52,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:24:52,713 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:24:52,713 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:24:52,714 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:24:52,714 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:24:52,714 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:24:52,714 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:24:52,715 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:24:52,715 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:24:52,715 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:24:52,716 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:24:52,716 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:24:52,716 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:24:52,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:24:52,717 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:24:52,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:24:52,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:24:52,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:24:52,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:24:52,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:24:52,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:24:52,719 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:24:52,719 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:24:52,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:24:52,720 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:24:52,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:24:52,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:24:52,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:24:52,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:24:52,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:24:52,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:24:52,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:24:52,722 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:24:52,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:24:52,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:24:52,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:24:52,723 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:24:52,723 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_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 427ff35e267ead3beebd34c045ef64a160789f85 [2021-10-13 07:24:53,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:24:53,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:24:53,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:24:53,060 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:24:53,061 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:24:53,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i [2021-10-13 07:24:53,164 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/data/11a18bc84/2f6dfc8499444adfb1797d31354c230d/FLAGe8fddc9d9 [2021-10-13 07:24:53,613 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:24:53,614 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i [2021-10-13 07:24:53,620 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/data/11a18bc84/2f6dfc8499444adfb1797d31354c230d/FLAGe8fddc9d9 [2021-10-13 07:24:54,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/data/11a18bc84/2f6dfc8499444adfb1797d31354c230d [2021-10-13 07:24:54,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:24:54,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:24:54,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:24:54,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:24:54,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:24:54,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:24:54" (1/1) ... [2021-10-13 07:24:54,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408de282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:54, skipping insertion in model container [2021-10-13 07:24:54,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:24:54" (1/1) ... [2021-10-13 07:24:54,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:24:54,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:24:54,250 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_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i[950,963] [2021-10-13 07:24:54,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:24:54,279 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:24:54,309 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_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i[950,963] [2021-10-13 07:24:54,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:24:54,362 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:24:54,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:54 WrapperNode [2021-10-13 07:24:54,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:24:54,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:24:54,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:24:54,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:24:54,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:54" (1/1) ... [2021-10-13 07:24:54,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:54" (1/1) ... [2021-10-13 07:24:54,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:24:54,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:24:54,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:24:54,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:24:54,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:54" (1/1) ... [2021-10-13 07:24:54,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:54" (1/1) ... [2021-10-13 07:24:54,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:54" (1/1) ... [2021-10-13 07:24:54,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:54" (1/1) ... [2021-10-13 07:24:54,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:54" (1/1) ... [2021-10-13 07:24:54,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:54" (1/1) ... [2021-10-13 07:24:54,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:54" (1/1) ... [2021-10-13 07:24:54,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:24:54,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:24:54,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:24:54,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:24:54,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:54" (1/1) ... [2021-10-13 07:24:54,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:24:54,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:24:54,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:24:54,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:24:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:24:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:24:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:24:54,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:24:57,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:24:57,046 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-13 07:24:57,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:24:57 BoogieIcfgContainer [2021-10-13 07:24:57,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:24:57,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:24:57,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:24:57,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:24:57,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:24:54" (1/3) ... [2021-10-13 07:24:57,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e225fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:24:57, skipping insertion in model container [2021-10-13 07:24:57,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:24:54" (2/3) ... [2021-10-13 07:24:57,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e225fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:24:57, skipping insertion in model container [2021-10-13 07:24:57,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:24:57" (3/3) ... [2021-10-13 07:24:57,060 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_valuebound1.i [2021-10-13 07:24:57,066 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:24:57,072 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 07:24:57,119 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:24:57,126 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 07:24:57,126 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 07:24:57,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 13 states have internal predecessors, (19), 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 07:24:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:24:57,145 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:57,146 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:24:57,147 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:57,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:57,161 INFO L82 PathProgramCache]: Analyzing trace with hash 136140001, now seen corresponding path program 1 times [2021-10-13 07:24:57,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:24:57,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310794192] [2021-10-13 07:24:57,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:57,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:24:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:57,375 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 07:24:57,376 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:24:57,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310794192] [2021-10-13 07:24:57,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310794192] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:57,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:57,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:24:57,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031476143] [2021-10-13 07:24:57,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:24:57,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:24:57,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:24:57,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:24:57,409 INFO L87 Difference]: Start difference. First operand has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 13 states have internal predecessors, (19), 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 2.5) internal successors, (5), 2 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 07:24:57,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:57,424 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2021-10-13 07:24:57,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:24:57,426 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 07:24:57,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:57,434 INFO L225 Difference]: With dead ends: 25 [2021-10-13 07:24:57,434 INFO L226 Difference]: Without dead ends: 12 [2021-10-13 07:24:57,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 07:24:57,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-13 07:24:57,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-13 07:24:57,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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 07:24:57,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-13 07:24:57,467 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2021-10-13 07:24:57,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:57,467 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-13 07:24:57,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 07:24:57,468 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-13 07:24:57,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:24:57,469 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:57,469 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:24:57,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:24:57,469 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:57,473 INFO L82 PathProgramCache]: Analyzing trace with hash -135046298, now seen corresponding path program 1 times [2021-10-13 07:24:57,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:24:57,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057715680] [2021-10-13 07:24:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:57,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:24:57,526 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:24:57,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701399618] [2021-10-13 07:24:57,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:57,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:24:57,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:24:57,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:24:57,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:24:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:57,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:24:57,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:57,941 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 07:24:57,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:58,052 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 07:24:58,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:24:58,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057715680] [2021-10-13 07:24:58,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:24:58,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701399618] [2021-10-13 07:24:58,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701399618] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:58,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:58,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:24:58,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80568401] [2021-10-13 07:24:58,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:24:58,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:24:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:24:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:24:58,058 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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 07:25:01,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:01,034 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-10-13 07:25:01,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:25:01,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) Word has length 6 [2021-10-13 07:25:01,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:01,036 INFO L225 Difference]: With dead ends: 32 [2021-10-13 07:25:01,036 INFO L226 Difference]: Without dead ends: 24 [2021-10-13 07:25:01,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:25:01,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-13 07:25:01,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-10-13 07:25:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 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 07:25:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-10-13 07:25:01,044 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 6 [2021-10-13 07:25:01,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:01,044 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-10-13 07:25:01,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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 07:25:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-10-13 07:25:01,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:25:01,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:01,046 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2021-10-13 07:25:01,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:01,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:01,270 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:01,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:01,270 INFO L82 PathProgramCache]: Analyzing trace with hash 919733532, now seen corresponding path program 1 times [2021-10-13 07:25:01,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:25:01,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734742119] [2021-10-13 07:25:01,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:01,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:25:01,288 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:25:01,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242658522] [2021-10-13 07:25:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:01,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:01,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:01,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:25:01,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:25:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:01,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:25:01,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:01,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:01,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:25:01,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734742119] [2021-10-13 07:25:01,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:25:01,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242658522] [2021-10-13 07:25:01,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242658522] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:01,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1547890699] [2021-10-13 07:25:01,777 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-13 07:25:01,778 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:25:01,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:25:01,794 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:25:01,795 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:25:01,837 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.4 percent of original size [2021-10-13 07:25:01,843 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:25:01,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:01,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-13 07:25:01,849 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:25:01,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:01,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-13 07:25:01,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-10-13 07:25:01,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:25:01,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:25:01,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:01,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:25:01,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:01,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:25:01,890 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:25:01,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:01,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:01,946 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-13 07:25:01,948 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 07:25:01,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:01,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 07:25:01,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:01,953 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 07:25:01,954 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:25:01,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:02,017 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:02,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:02,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-10-13 07:25:02,023 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:25:02,024 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:242, output treesize:108 [2021-10-13 07:25:02,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-13 07:25:02,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:02,241 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_32| 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 07:25:02,245 INFO L168 Benchmark]: Toolchain (without parser) took 8238.79 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 65.3 MB in the beginning and 63.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:02,245 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory was 72.6 MB in the beginning and 72.5 MB in the end (delta: 26.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:02,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.38 ms. Allocated memory is still 100.7 MB. Free memory was 65.1 MB in the beginning and 75.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:02,246 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.99 ms. Allocated memory is still 100.7 MB. Free memory was 75.7 MB in the beginning and 74.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:02,247 INFO L168 Benchmark]: Boogie Preprocessor took 26.47 ms. Allocated memory is still 100.7 MB. Free memory was 74.0 MB in the beginning and 73.1 MB in the end (delta: 902.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:02,247 INFO L168 Benchmark]: RCFGBuilder took 2617.73 ms. Allocated memory is still 100.7 MB. Free memory was 73.1 MB in the beginning and 56.4 MB in the end (delta: 16.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:02,248 INFO L168 Benchmark]: TraceAbstraction took 5193.06 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 56.0 MB in the beginning and 63.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:02,251 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 100.7 MB. Free memory was 72.6 MB in the beginning and 72.5 MB in the end (delta: 26.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 356.38 ms. Allocated memory is still 100.7 MB. Free memory was 65.1 MB in the beginning and 75.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.99 ms. Allocated memory is still 100.7 MB. Free memory was 75.7 MB in the beginning and 74.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.47 ms. Allocated memory is still 100.7 MB. Free memory was 74.0 MB in the beginning and 73.1 MB in the end (delta: 902.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2617.73 ms. Allocated memory is still 100.7 MB. Free memory was 73.1 MB in the beginning and 56.4 MB in the end (delta: 16.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5193.06 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 56.0 MB in the beginning and 63.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 16.1 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_32| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_32|: 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 07:25:02,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/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 07:25:04,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:25:04,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:25:04,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:25:04,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:25:04,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:25:04,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:25:04,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:25:04,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:25:04,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:25:04,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:25:04,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:25:04,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:25:04,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:25:04,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:25:04,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:25:04,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:25:04,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:25:04,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:25:04,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:25:04,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:25:04,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:25:04,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:25:04,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:25:04,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:25:04,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:25:04,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:25:04,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:25:04,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:25:04,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:25:04,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:25:04,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:25:04,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:25:04,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:25:04,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:25:04,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:25:04,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:25:04,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:25:04,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:25:04,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:25:04,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:25:04,906 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:25:04,944 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:25:04,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:25:04,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:25:04,946 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:25:04,946 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:25:04,946 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:25:04,946 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:25:04,947 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:25:04,947 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:25:04,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:25:04,949 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:25:04,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:25:04,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:25:04,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:25:04,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:25:04,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:25:04,951 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:25:04,951 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:25:04,951 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:25:04,951 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:25:04,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:25:04,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:25:04,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:25:04,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:25:04,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:25:04,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:25:04,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:04,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:25:04,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:25:04,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:25:04,954 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:25:04,954 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:25:04,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:25:04,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:25:04,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:25:04,955 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_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 427ff35e267ead3beebd34c045ef64a160789f85 [2021-10-13 07:25:05,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:25:05,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:25:05,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:25:05,421 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:25:05,421 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:25:05,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i [2021-10-13 07:25:05,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/data/b239b554e/2572a9e6208d48a4a7b67d25d9309dfb/FLAGbf8b6349d [2021-10-13 07:25:06,068 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:25:06,069 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i [2021-10-13 07:25:06,076 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/data/b239b554e/2572a9e6208d48a4a7b67d25d9309dfb/FLAGbf8b6349d [2021-10-13 07:25:06,432 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/data/b239b554e/2572a9e6208d48a4a7b67d25d9309dfb [2021-10-13 07:25:06,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:25:06,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:25:06,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:06,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:25:06,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:25:06,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78613d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06, skipping insertion in model container [2021-10-13 07:25:06,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:25:06,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:25:06,609 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_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i[950,963] [2021-10-13 07:25:06,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:06,638 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:25:06,651 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_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i[950,963] [2021-10-13 07:25:06,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:06,706 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:25:06,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06 WrapperNode [2021-10-13 07:25:06,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:06,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:06,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:25:06,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:25:06,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:06,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:25:06,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:25:06,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:25:06,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:25:06,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:25:06,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:25:06,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:25:06,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,826 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:06,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:06,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:25:06,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:25:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:25:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:25:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:25:06,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:25:07,277 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:25:07,278 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-13 07:25:07,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:07 BoogieIcfgContainer [2021-10-13 07:25:07,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:25:07,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:25:07,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:25:07,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:25:07,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:25:06" (1/3) ... [2021-10-13 07:25:07,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d59379b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:07, skipping insertion in model container [2021-10-13 07:25:07,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (2/3) ... [2021-10-13 07:25:07,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d59379b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:07, skipping insertion in model container [2021-10-13 07:25:07,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:07" (3/3) ... [2021-10-13 07:25:07,289 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_valuebound1.i [2021-10-13 07:25:07,294 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:25:07,295 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 07:25:07,363 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:25:07,377 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 07:25:07,393 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 07:25:07,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 25 states have internal predecessors, (38), 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 07:25:07,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:25:07,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:07,422 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:07,423 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:07,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:07,433 INFO L82 PathProgramCache]: Analyzing trace with hash -174569337, now seen corresponding path program 1 times [2021-10-13 07:25:07,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:07,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44886000] [2021-10-13 07:25:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:07,447 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:07,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:07,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:07,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:25:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:07,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:25:07,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:07,631 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 07:25:07,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:07,674 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 07:25:07,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:07,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44886000] [2021-10-13 07:25:07,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44886000] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:07,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:25:07,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:25:07,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197977467] [2021-10-13 07:25:07,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:25:07,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:25:07,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:25:07,700 INFO L87 Difference]: Start difference. First operand has 26 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 25 states have internal predecessors, (38), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 07:25:07,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:07,716 INFO L93 Difference]: Finished difference Result 49 states and 72 transitions. [2021-10-13 07:25:07,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:25:07,718 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2021-10-13 07:25:07,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:07,727 INFO L225 Difference]: With dead ends: 49 [2021-10-13 07:25:07,728 INFO L226 Difference]: Without dead ends: 22 [2021-10-13 07:25:07,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:25:07,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-13 07:25:07,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-13 07:25:07,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 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 07:25:07,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-10-13 07:25:07,763 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2021-10-13 07:25:07,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:07,763 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-13 07:25:07,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 07:25:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-10-13 07:25:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:25:07,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:07,765 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:07,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:07,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:25:07,978 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:07,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:07,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1454099019, now seen corresponding path program 1 times [2021-10-13 07:25:07,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:07,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211872002] [2021-10-13 07:25:07,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:07,981 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:07,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:07,983 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:07,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:25:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:08,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 07:25:08,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:08,867 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 07:25:08,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:09,618 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 07:25:09,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:09,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211872002] [2021-10-13 07:25:09,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211872002] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:09,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:25:09,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 5] imperfect sequences [] total 14 [2021-10-13 07:25:09,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734470811] [2021-10-13 07:25:09,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 07:25:09,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:09,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 07:25:09,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:25:09,624 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 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 07:25:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:12,252 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2021-10-13 07:25:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 07:25:12,253 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 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 15 [2021-10-13 07:25:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:12,254 INFO L225 Difference]: With dead ends: 49 [2021-10-13 07:25:12,254 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 07:25:12,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2563.2ms TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2021-10-13 07:25:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 07:25:12,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-10-13 07:25:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 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 07:25:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2021-10-13 07:25:12,264 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 15 [2021-10-13 07:25:12,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:12,265 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2021-10-13 07:25:12,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 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 07:25:12,266 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2021-10-13 07:25:12,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 07:25:12,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:12,267 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:12,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:12,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:25:12,479 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:12,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:12,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1807844991, now seen corresponding path program 1 times [2021-10-13 07:25:12,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:12,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597002701] [2021-10-13 07:25:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:12,495 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:12,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:12,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:12,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:25:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:12,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 07:25:12,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:13,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:13,620 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:13,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597002701] [2021-10-13 07:25:13,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597002701] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:13,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2096518155] [2021-10-13 07:25:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:13,621 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:25:13,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:25:13,626 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:25:13,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-13 07:25:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:13,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:25:13,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:14,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:15,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2096518155] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:25:15,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:25:15,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 10, 7] total 25 [2021-10-13 07:25:15,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886559299] [2021-10-13 07:25:15,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:25:15,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:15,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:25:15,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-10-13 07:25:15,468 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 07:25:16,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:16,052 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-10-13 07:25:16,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:25:16,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2021-10-13 07:25:16,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:16,055 INFO L225 Difference]: With dead ends: 39 [2021-10-13 07:25:16,055 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 07:25:16,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1768.4ms TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2021-10-13 07:25:16,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 07:25:16,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-13 07:25:16,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 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 07:25:16,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-13 07:25:16,061 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2021-10-13 07:25:16,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:16,061 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-13 07:25:16,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 07:25:16,061 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-13 07:25:16,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:25:16,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:16,062 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:16,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:16,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-10-13 07:25:16,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:25:16,471 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:16,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:16,472 INFO L82 PathProgramCache]: Analyzing trace with hash 567763771, now seen corresponding path program 1 times [2021-10-13 07:25:16,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:16,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806901891] [2021-10-13 07:25:16,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:16,473 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:16,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:16,474 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:16,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:25:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:16,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 07:25:16,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:17,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:19,164 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:19,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806901891] [2021-10-13 07:25:19,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806901891] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:19,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1657279932] [2021-10-13 07:25:19,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:19,165 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:25:19,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:25:19,175 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:25:19,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-13 07:25:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:19,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 07:25:19,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:19,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:25,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1657279932] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:25,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754353913] [2021-10-13 07:25:25,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:25,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:25,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:25,609 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:25:25,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 07:25:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:25,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 07:25:25,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:26,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:28,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754353913] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:28,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:25:28,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 10, 8, 14, 7] total 26 [2021-10-13 07:25:28,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132181313] [2021-10-13 07:25:28,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 07:25:28,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:28,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 07:25:28,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2021-10-13 07:25:28,227 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 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 07:25:30,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:30,182 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-10-13 07:25:30,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 07:25:30,183 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 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 21 [2021-10-13 07:25:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:30,185 INFO L225 Difference]: With dead ends: 33 [2021-10-13 07:25:30,186 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:25:30,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 90 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 8744.8ms TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 07:25:30,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:25:30,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:25:30,189 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 07:25:30,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:25:30,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-13 07:25:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:30,189 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:25:30,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 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 07:25:30,190 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:25:30,190 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:25:30,193 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:25:30,204 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:25:30,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:30,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-13 07:25:30,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-10-13 07:25:30,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:25:30,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:25:30,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:30,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:30,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:30,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:32,394 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-13 07:25:32,394 INFO L860 garLoopResultBuilder]: At program point L52(lines 25 53) the Hoare annotation is: true [2021-10-13 07:25:32,394 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-10-13 07:25:32,394 INFO L853 garLoopResultBuilder]: At program point L19-2(line 43) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~q~0 (_ bv0 32))) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse3 (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse4 (bvule ULTIMATE.start_main_~B~0 (_ bv1 32)))) (or (and .cse0 .cse1 (not (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0)) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0) .cse2 .cse3 .cse4 (bvule ULTIMATE.start_main_~b~0 (_ bv1 32))) (and (bvule ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse0 .cse1 (exists ((v_ULTIMATE.start_main_~b~0_29 (_ BitVec 32))) (and (bvuge ULTIMATE.start_main_~r~0 v_ULTIMATE.start_main_~b~0_29) (= (bvmul (_ bv2 32) v_ULTIMATE.start_main_~b~0_29) ULTIMATE.start_main_~b~0) (bvuge v_ULTIMATE.start_main_~b~0_29 (_ bv1 32)))) (= (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0) .cse2 .cse3 .cse4) (and (bvule ULTIMATE.start_main_~A~0 (_ bv1 32)) .cse0 (exists ((v_ULTIMATE.start_main_~b~0_29 (_ BitVec 32))) (and (= (bvudiv (bvmul v_ULTIMATE.start_main_~b~0_29 (_ bv2 32)) (_ bv2 32)) ULTIMATE.start_main_~b~0) (bvuge ULTIMATE.start_main_~A~0 v_ULTIMATE.start_main_~b~0_29) (bvuge v_ULTIMATE.start_main_~b~0_29 (_ bv1 32)))) (= ULTIMATE.start_main_~q~0 (_ bv1 32)) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~r~0 (bvadd (bvneg ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~A~0))))) [2021-10-13 07:25:32,395 INFO L857 garLoopResultBuilder]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2021-10-13 07:25:32,395 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-13 07:25:32,395 INFO L857 garLoopResultBuilder]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2021-10-13 07:25:32,395 INFO L860 garLoopResultBuilder]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2021-10-13 07:25:32,395 INFO L857 garLoopResultBuilder]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2021-10-13 07:25:32,395 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 17) no Hoare annotation was computed. [2021-10-13 07:25:32,395 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:25:32,395 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:25:32,396 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:25:32,396 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-13 07:25:32,396 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-10-13 07:25:32,396 INFO L857 garLoopResultBuilder]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2021-10-13 07:25:32,396 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-13 07:25:32,396 INFO L857 garLoopResultBuilder]: For program point L16-2(line 16) no Hoare annotation was computed. [2021-10-13 07:25:32,396 INFO L857 garLoopResultBuilder]: For program point L16-4(line 16) no Hoare annotation was computed. [2021-10-13 07:25:32,396 INFO L857 garLoopResultBuilder]: For program point L16-6(line 16) no Hoare annotation was computed. [2021-10-13 07:25:32,397 INFO L857 garLoopResultBuilder]: For program point L41-1(lines 41 50) no Hoare annotation was computed. [2021-10-13 07:25:32,397 INFO L853 garLoopResultBuilder]: At program point L37-2(lines 37 40) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~q~0 (_ bv0 32))) (.cse0 (bvule ULTIMATE.start_main_~r~0 (_ bv1 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse3 (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse4 (bvule ULTIMATE.start_main_~B~0 (_ bv1 32)))) (or (and .cse0 .cse1 .cse2 (exists ((v_ULTIMATE.start_main_~b~0_29 (_ BitVec 32))) (and (bvuge ULTIMATE.start_main_~r~0 v_ULTIMATE.start_main_~b~0_29) (= (bvmul (_ bv2 32) v_ULTIMATE.start_main_~b~0_29) ULTIMATE.start_main_~b~0) (bvuge v_ULTIMATE.start_main_~b~0_29 (_ bv1 32)))) (= (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0) .cse3 .cse4) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0) .cse3 .cse4 (bvule ULTIMATE.start_main_~b~0 (_ bv1 32))) (and (bvule ULTIMATE.start_main_~A~0 (_ bv1 32)) .cse0 (exists ((v_ULTIMATE.start_main_~b~0_23 (_ BitVec 32))) (and (bvuge ULTIMATE.start_main_~r~0 (bvmul v_ULTIMATE.start_main_~b~0_23 (_ bv2 32))) (= (bvmul (_ bv4 32) v_ULTIMATE.start_main_~b~0_23) ULTIMATE.start_main_~b~0))) .cse1 .cse3 .cse4))) [2021-10-13 07:25:32,397 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:25:32,397 INFO L857 garLoopResultBuilder]: For program point L46(lines 46 49) no Hoare annotation was computed. [2021-10-13 07:25:32,397 INFO L857 garLoopResultBuilder]: For program point L46-2(lines 25 53) no Hoare annotation was computed. [2021-10-13 07:25:32,397 INFO L857 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-10-13 07:25:32,412 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:25:32,419 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) 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 07:25:32,426 INFO L168 Benchmark]: Toolchain (without parser) took 25988.93 ms. Allocated memory was 52.4 MB in the beginning and 83.9 MB in the end (delta: 31.5 MB). Free memory was 29.6 MB in the beginning and 23.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:32,426 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 52.4 MB. Free memory was 33.4 MB in the beginning and 33.4 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:32,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.47 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 29.4 MB in the beginning and 53.4 MB in the end (delta: -23.9 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:32,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.37 ms. Allocated memory is still 69.2 MB. Free memory was 53.1 MB in the beginning and 51.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:32,434 INFO L168 Benchmark]: Boogie Preprocessor took 35.90 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 50.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:32,435 INFO L168 Benchmark]: RCFGBuilder took 463.52 ms. Allocated memory is still 69.2 MB. Free memory was 50.3 MB in the beginning and 40.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:32,437 INFO L168 Benchmark]: TraceAbstraction took 25141.97 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 39.8 MB in the beginning and 23.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:32,440 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 52.4 MB. Free memory was 33.4 MB in the beginning and 33.4 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.47 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 29.4 MB in the beginning and 53.4 MB in the end (delta: -23.9 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.37 ms. Allocated memory is still 69.2 MB. Free memory was 53.1 MB in the beginning and 51.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.90 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 50.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 463.52 ms. Allocated memory is still 69.2 MB. Free memory was 50.3 MB in the beginning and 40.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25141.97 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 39.8 MB in the beginning and 23.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 33.0 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: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: 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, 26 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 25050.4ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 20.3ms, AutomataDifference: 5230.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1576.8ms, InitialAbstractionConstructionTime: 10.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 60 SDtfs, 233 SDslu, 107 SDs, 0 SdLazy, 288 SolverSat, 99 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2179.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 268 GetRequests, 181 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 13076.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 32.6ms AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 195 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 93.0ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 37 FormulaSimplificationTreeSizeReductionInter, 1477.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 73.9ms SsaConstructionTime, 274.6ms SatisfiabilityAnalysisTime, 15548.6ms InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 246 ConstructedInterpolants, 39 QuantifiedInterpolants, 2044 SizeOfPredicates, 63 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 16/48 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 2 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:25:32,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c9f6ed-e00a-40cc-beb2-9539e22dae0b/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...