./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs --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 becf68b1b41bf8f9c75117f82605e436bc8d5a41 ........................................................................................................................................................................................................................................................................................................................................................ 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_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs --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 becf68b1b41bf8f9c75117f82605e436bc8d5a41 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:57:03,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:57:03,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:57:03,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:57:03,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:57:03,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:57:03,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:57:03,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:57:03,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:57:03,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:57:03,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:57:03,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:57:03,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:57:03,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:57:03,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:57:03,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:57:03,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:57:03,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:57:03,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:57:03,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:57:03,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:57:03,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:57:03,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:57:03,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:57:03,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:57:03,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:57:03,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:57:03,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:57:03,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:57:03,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:57:03,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:57:03,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:57:03,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:57:03,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:57:03,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:57:03,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:57:03,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:57:03,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:57:03,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:57:03,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:57:03,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:57:03,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:57:03,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:57:03,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:57:03,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:57:03,391 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:57:03,391 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:57:03,392 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:57:03,392 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:57:03,392 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:57:03,392 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:57:03,393 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:57:03,393 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:57:03,393 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:57:03,393 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:57:03,394 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:57:03,394 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:57:03,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:57:03,395 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:57:03,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:57:03,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:57:03,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:57:03,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:57:03,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:57:03,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:57:03,396 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:57:03,397 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:57:03,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:57:03,397 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:57:03,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:57:03,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:57:03,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:57:03,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:57:03,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:57:03,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:57:03,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:57:03,399 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:57:03,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:57:03,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:57:03,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:57:03,400 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:57:03,400 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_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> becf68b1b41bf8f9c75117f82605e436bc8d5a41 [2021-10-16 02:57:03,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:57:03,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:57:03,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:57:03,734 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:57:03,735 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:57:03,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2021-10-16 02:57:03,801 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/data/4a68730d3/b977b59223864f33b5ad99b2bbd3ba2f/FLAG15f687e9a [2021-10-16 02:57:04,317 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:57:04,320 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2021-10-16 02:57:04,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/data/4a68730d3/b977b59223864f33b5ad99b2bbd3ba2f/FLAG15f687e9a [2021-10-16 02:57:04,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/data/4a68730d3/b977b59223864f33b5ad99b2bbd3ba2f [2021-10-16 02:57:04,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:57:04,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:57:04,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:57:04,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:57:04,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:57:04,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:57:04" (1/1) ... [2021-10-16 02:57:04,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d67a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:04, skipping insertion in model container [2021-10-16 02:57:04,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:57:04" (1/1) ... [2021-10-16 02:57:04,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:57:04,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:57:04,874 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_8e7aea7c-f026-462e-b443-01e28ec4f48c/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-10-16 02:57:04,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:57:04,918 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:57:04,930 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_8e7aea7c-f026-462e-b443-01e28ec4f48c/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-10-16 02:57:04,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:57:04,946 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:57:04,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:04 WrapperNode [2021-10-16 02:57:04,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:57:04,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:57:04,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:57:04,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:57:04,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:04" (1/1) ... [2021-10-16 02:57:04,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:04" (1/1) ... [2021-10-16 02:57:04,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:57:04,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:57:04,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:57:04,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:57:04,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:04" (1/1) ... [2021-10-16 02:57:04,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:04" (1/1) ... [2021-10-16 02:57:04,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:04" (1/1) ... [2021-10-16 02:57:04,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:04" (1/1) ... [2021-10-16 02:57:04,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:04" (1/1) ... [2021-10-16 02:57:04,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:04" (1/1) ... [2021-10-16 02:57:04,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:04" (1/1) ... [2021-10-16 02:57:04,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:57:04,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:57:04,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:57:04,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:57:05,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:04" (1/1) ... [2021-10-16 02:57:05,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:57:05,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:57:05,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:57:05,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:57:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:57:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:57:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:57:05,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:57:05,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:57:05,370 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:57:05,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:57:05 BoogieIcfgContainer [2021-10-16 02:57:05,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:57:05,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:57:05,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:57:05,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:57:05,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:57:04" (1/3) ... [2021-10-16 02:57:05,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3c2a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:57:05, skipping insertion in model container [2021-10-16 02:57:05,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:04" (2/3) ... [2021-10-16 02:57:05,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3c2a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:57:05, skipping insertion in model container [2021-10-16 02:57:05,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:57:05" (3/3) ... [2021-10-16 02:57:05,395 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark23_conjunctive.i [2021-10-16 02:57:05,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:57:05,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:57:05,478 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:57:05,499 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 [2021-10-16 02:57:05,513 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:57:05,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:05,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:57:05,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:05,531 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:57:05,531 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:57:05,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:05,537 INFO L82 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2021-10-16 02:57:05,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:57:05,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384507368] [2021-10-16 02:57:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:05,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:57:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:05,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:57:05,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384507368] [2021-10-16 02:57:05,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384507368] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:57:05,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:57:05,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:57:05,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358667820] [2021-10-16 02:57:05,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:57:05,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:57:05,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:57:05,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:57:05,798 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:05,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:05,841 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-10-16 02:57:05,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:57:05,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 02:57:05,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:05,852 INFO L225 Difference]: With dead ends: 16 [2021-10-16 02:57:05,852 INFO L226 Difference]: Without dead ends: 7 [2021-10-16 02:57:05,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:57:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-16 02:57:05,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-16 02:57:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:05,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-16 02:57:05,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-16 02:57:05,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:05,890 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-16 02:57:05,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:05,890 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-16 02:57:05,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:57:05,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:05,891 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:57:05,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:57:05,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:57:05,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:05,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2021-10-16 02:57:05,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:57:05,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346437513] [2021-10-16 02:57:05,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:05,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:57:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:05,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:57:05,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346437513] [2021-10-16 02:57:05,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346437513] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:57:05,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354120281] [2021-10-16 02:57:05,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:05,986 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:57:05,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:57:05,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:57:06,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:57:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:06,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:57:06,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:06,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:06,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354120281] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:06,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2051363509] [2021-10-16 02:57:06,202 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-16 02:57:06,203 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:57:06,210 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:57:06,218 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:57:06,219 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:57:06,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:06,266 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:57:06,266 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:06,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:57:06,271 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:57:06,272 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:06,273 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:57:06,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-16 02:57:06,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:57:06,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:57:06,367 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-16 02:57:06,368 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 [2021-10-16 02:57:06,370 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:06,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:57:06,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:06,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:57:06,376 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:57:06,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:57:06,416 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:06,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:06,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-16 02:57:06,422 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:57:06,423 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:102, output treesize:90 [2021-10-16 02:57:06,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:06,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:57:06,657 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_8| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:57:06,661 INFO L168 Benchmark]: Toolchain (without parser) took 1975.07 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 71.2 MB in the beginning and 109.8 MB in the end (delta: -38.6 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:06,662 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 113.2 MB. Free memory was 87.3 MB in the beginning and 87.2 MB in the end (delta: 58.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:57:06,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.81 ms. Allocated memory is still 113.2 MB. Free memory was 71.0 MB in the beginning and 88.0 MB in the end (delta: -17.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:06,662 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.26 ms. Allocated memory is still 113.2 MB. Free memory was 88.0 MB in the beginning and 86.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:06,663 INFO L168 Benchmark]: Boogie Preprocessor took 19.08 ms. Allocated memory is still 113.2 MB. Free memory was 86.8 MB in the beginning and 85.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:57:06,663 INFO L168 Benchmark]: RCFGBuilder took 388.88 ms. Allocated memory is still 113.2 MB. Free memory was 85.8 MB in the beginning and 75.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:06,664 INFO L168 Benchmark]: TraceAbstraction took 1271.40 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 74.7 MB in the beginning and 109.8 MB in the end (delta: -35.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:06,668 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 113.2 MB. Free memory was 87.3 MB in the beginning and 87.2 MB in the end (delta: 58.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.81 ms. Allocated memory is still 113.2 MB. Free memory was 71.0 MB in the beginning and 88.0 MB in the end (delta: -17.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.26 ms. Allocated memory is still 113.2 MB. Free memory was 88.0 MB in the beginning and 86.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.08 ms. Allocated memory is still 113.2 MB. Free memory was 86.8 MB in the beginning and 85.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 388.88 ms. Allocated memory is still 113.2 MB. Free memory was 85.8 MB in the beginning and 75.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1271.40 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 74.7 MB in the beginning and 109.8 MB in the end (delta: -35.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_8| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_8|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:57:06,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 02:57:09,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:57:09,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:57:09,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:57:09,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:57:09,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:57:09,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:57:09,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:57:09,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:57:09,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:57:09,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:57:09,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:57:09,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:57:09,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:57:09,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:57:09,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:57:09,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:57:09,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:57:09,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:57:09,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:57:09,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:57:09,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:57:09,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:57:09,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:57:09,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:57:09,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:57:09,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:57:09,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:57:09,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:57:09,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:57:09,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:57:09,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:57:09,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:57:09,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:57:09,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:57:09,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:57:09,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:57:09,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:57:09,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:57:09,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:57:09,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:57:09,273 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:57:09,339 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:57:09,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:57:09,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:57:09,342 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:57:09,342 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:57:09,342 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:57:09,342 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:57:09,343 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:57:09,343 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:57:09,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:57:09,346 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:57:09,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:57:09,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:57:09,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:57:09,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:57:09,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:57:09,348 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:57:09,348 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:57:09,348 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:57:09,348 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:57:09,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:57:09,349 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:57:09,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:57:09,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:57:09,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:57:09,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:57:09,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:57:09,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:57:09,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:57:09,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:57:09,351 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:57:09,352 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:57:09,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:57:09,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:57:09,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:57:09,353 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_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> becf68b1b41bf8f9c75117f82605e436bc8d5a41 [2021-10-16 02:57:09,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:57:09,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:57:09,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:57:09,875 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:57:09,876 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:57:09,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2021-10-16 02:57:09,968 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/data/b117703c2/3c25d75b269142db87f2380bfbb116b6/FLAGef2193816 [2021-10-16 02:57:10,699 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:57:10,700 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2021-10-16 02:57:10,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/data/b117703c2/3c25d75b269142db87f2380bfbb116b6/FLAGef2193816 [2021-10-16 02:57:11,031 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/data/b117703c2/3c25d75b269142db87f2380bfbb116b6 [2021-10-16 02:57:11,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:57:11,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:57:11,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:57:11,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:57:11,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:57:11,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:57:11" (1/1) ... [2021-10-16 02:57:11,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433b8b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:11, skipping insertion in model container [2021-10-16 02:57:11,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:57:11" (1/1) ... [2021-10-16 02:57:11,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:57:11,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:57:11,241 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_8e7aea7c-f026-462e-b443-01e28ec4f48c/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-10-16 02:57:11,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:57:11,284 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:57:11,308 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_8e7aea7c-f026-462e-b443-01e28ec4f48c/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-10-16 02:57:11,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:57:11,350 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:57:11,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:11 WrapperNode [2021-10-16 02:57:11,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:57:11,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:57:11,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:57:11,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:57:11,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:11" (1/1) ... [2021-10-16 02:57:11,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:11" (1/1) ... [2021-10-16 02:57:11,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:57:11,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:57:11,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:57:11,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:57:11,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:11" (1/1) ... [2021-10-16 02:57:11,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:11" (1/1) ... [2021-10-16 02:57:11,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:11" (1/1) ... [2021-10-16 02:57:11,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:11" (1/1) ... [2021-10-16 02:57:11,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:11" (1/1) ... [2021-10-16 02:57:11,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:11" (1/1) ... [2021-10-16 02:57:11,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:11" (1/1) ... [2021-10-16 02:57:11,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:57:11,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:57:11,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:57:11,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:57:11,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:11" (1/1) ... [2021-10-16 02:57:11,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:57:11,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:57:11,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:57:11,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:57:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:57:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:57:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:57:11,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:57:11,813 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:57:11,813 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:57:11,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:57:11 BoogieIcfgContainer [2021-10-16 02:57:11,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:57:11,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:57:11,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:57:11,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:57:11,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:57:11" (1/3) ... [2021-10-16 02:57:11,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4e7662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:57:11, skipping insertion in model container [2021-10-16 02:57:11,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:11" (2/3) ... [2021-10-16 02:57:11,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4e7662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:57:11, skipping insertion in model container [2021-10-16 02:57:11,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:57:11" (3/3) ... [2021-10-16 02:57:11,826 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark23_conjunctive.i [2021-10-16 02:57:11,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:57:11,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:57:11,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:57:11,924 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 [2021-10-16 02:57:11,925 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:57:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:11,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:57:11,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:11,967 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:11,968 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:57:11,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:11,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2021-10-16 02:57:11,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:11,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902849846] [2021-10-16 02:57:11,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:11,996 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:11,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:11,997 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:11,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:57:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:12,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:57:12,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:12,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:12,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:12,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902849846] [2021-10-16 02:57:12,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902849846] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:57:12,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:57:12,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:57:12,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192567960] [2021-10-16 02:57:12,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:57:12,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:57:12,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:57:12,237 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:12,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:12,268 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-10-16 02:57:12,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:57:12,270 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:57:12,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:12,279 INFO L225 Difference]: With dead ends: 20 [2021-10-16 02:57:12,279 INFO L226 Difference]: Without dead ends: 8 [2021-10-16 02:57:12,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:57:12,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-16 02:57:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-16 02:57:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-10-16 02:57:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-16 02:57:12,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-10-16 02:57:12,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:12,319 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-16 02:57:12,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-16 02:57:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:57:12,320 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:12,321 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:12,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:12,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:57:12,535 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:57:12,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:12,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2021-10-16 02:57:12,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:12,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647283995] [2021-10-16 02:57:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:12,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:12,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:12,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:12,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:57:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:12,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:57:12,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:12,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:12,703 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:12,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647283995] [2021-10-16 02:57:12,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647283995] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:57:12,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:57:12,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:57:12,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243661924] [2021-10-16 02:57:12,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:57:12,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:12,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:57:12,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:57:12,709 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:12,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:12,753 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-16 02:57:12,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:57:12,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:57:12,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:12,757 INFO L225 Difference]: With dead ends: 14 [2021-10-16 02:57:12,757 INFO L226 Difference]: Without dead ends: 10 [2021-10-16 02:57:12,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:57:12,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-16 02:57:12,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-16 02:57:12,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2021-10-16 02:57:12,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-16 02:57:12,764 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-10-16 02:57:12,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:12,765 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-16 02:57:12,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:12,766 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-16 02:57:12,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:57:12,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:12,768 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:12,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:12,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:57:12,979 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:57:12,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:12,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1384978123, now seen corresponding path program 1 times [2021-10-16 02:57:12,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:12,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388463310] [2021-10-16 02:57:12,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:12,982 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:12,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:12,983 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:12,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:57:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:13,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:57:13,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:13,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:13,217 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:13,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388463310] [2021-10-16 02:57:13,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388463310] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:13,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1015030876] [2021-10-16 02:57:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:13,218 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:57:13,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:57:13,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:57:13,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-16 02:57:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:13,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:57:13,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:13,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:13,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1015030876] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:13,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622209529] [2021-10-16 02:57:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:13,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:57:13,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:57:13,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:57:13,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 02:57:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:13,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:57:13,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:13,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:13,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622209529] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:13,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:57:13,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-16 02:57:13,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401291015] [2021-10-16 02:57:13,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:57:13,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:13,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:57:13,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:57:13,660 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2021-10-16 02:57:13,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:13,773 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2021-10-16 02:57:13,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:57:13,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) Word has length 9 [2021-10-16 02:57:13,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:13,775 INFO L225 Difference]: With dead ends: 18 [2021-10-16 02:57:13,775 INFO L226 Difference]: Without dead ends: 14 [2021-10-16 02:57:13,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 100.5ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:57:13,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-16 02:57:13,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-16 02:57:13,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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) [2021-10-16 02:57:13,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-16 02:57:13,780 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2021-10-16 02:57:13,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:13,781 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-16 02:57:13,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2021-10-16 02:57:13,781 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-16 02:57:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:57:13,782 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:13,782 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:13,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-16 02:57:14,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:14,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:14,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:57:14,401 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:57:14,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:14,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1963731147, now seen corresponding path program 2 times [2021-10-16 02:57:14,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:14,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729566674] [2021-10-16 02:57:14,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:57:14,403 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:14,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:14,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:14,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:57:14,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:57:14,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:57:14,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:57:14,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:14,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:14,892 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:14,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729566674] [2021-10-16 02:57:14,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729566674] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:14,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2066367035] [2021-10-16 02:57:14,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:57:14,893 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:57:14,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:57:14,894 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:57:14,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-16 02:57:15,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:57:15,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:57:15,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:57:15,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:15,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:15,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2066367035] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:15,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428693369] [2021-10-16 02:57:15,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:57:15,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:57:15,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:57:15,125 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:57:15,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-16 02:57:15,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:57:15,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:57:15,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:57:15,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:15,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:15,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428693369] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:15,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:57:15,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 16 [2021-10-16 02:57:15,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420526094] [2021-10-16 02:57:15,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-16 02:57:15,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:15,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-16 02:57:15,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:57:15,323 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2021-10-16 02:57:15,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:15,733 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2021-10-16 02:57:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-16 02:57:15,735 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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 13 [2021-10-16 02:57:15,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:15,735 INFO L225 Difference]: With dead ends: 26 [2021-10-16 02:57:15,736 INFO L226 Difference]: Without dead ends: 22 [2021-10-16 02:57:15,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 525.1ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-16 02:57:15,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-16 02:57:15,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-16 02:57:15,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 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) [2021-10-16 02:57:15,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-16 02:57:15,742 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2021-10-16 02:57:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:15,742 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-16 02:57:15,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2021-10-16 02:57:15,743 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-16 02:57:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-16 02:57:15,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:15,744 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:15,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:15,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:16,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-16 02:57:16,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:57:16,359 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:57:16,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:16,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1090473163, now seen corresponding path program 3 times [2021-10-16 02:57:16,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:16,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641559739] [2021-10-16 02:57:16,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:57:16,361 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:16,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:16,362 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:16,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:57:16,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-16 02:57:16,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:57:16,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 02:57:16,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:16,720 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:16,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:17,532 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:17,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641559739] [2021-10-16 02:57:17,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641559739] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:17,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1080282099] [2021-10-16 02:57:17,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:57:17,533 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:57:17,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:57:17,535 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:57:17,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-16 02:57:17,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-16 02:57:17,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:57:17,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 02:57:17,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:17,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:17,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1080282099] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:17,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388422493] [2021-10-16 02:57:17,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:57:17,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:57:17,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:57:17,923 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:57:17,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-16 02:57:18,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-16 02:57:18,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:57:18,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 02:57:18,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:18,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:19,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388422493] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:19,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:57:19,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 17, 17] total 46 [2021-10-16 02:57:19,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291967931] [2021-10-16 02:57:19,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-16 02:57:19,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-16 02:57:19,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=629, Invalid=1441, Unknown=0, NotChecked=0, Total=2070 [2021-10-16 02:57:19,873 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 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) [2021-10-16 02:57:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:22,547 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2021-10-16 02:57:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-16 02:57:22,547 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 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 [2021-10-16 02:57:22,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:22,549 INFO L225 Difference]: With dead ends: 42 [2021-10-16 02:57:22,549 INFO L226 Difference]: Without dead ends: 38 [2021-10-16 02:57:22,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 4509.1ms TimeCoverageRelationStatistics Valid=1215, Invalid=2445, Unknown=0, NotChecked=0, Total=3660 [2021-10-16 02:57:22,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-16 02:57:22,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-16 02:57:22,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 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) [2021-10-16 02:57:22,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-10-16 02:57:22,558 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 21 [2021-10-16 02:57:22,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:22,559 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-10-16 02:57:22,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 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) [2021-10-16 02:57:22,559 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-10-16 02:57:22,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-16 02:57:22,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:22,561 INFO L512 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:22,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:22,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:22,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:23,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:57:23,164 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:57:23,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:23,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1924764875, now seen corresponding path program 4 times [2021-10-16 02:57:23,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:23,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752687793] [2021-10-16 02:57:23,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:57:23,166 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:23,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:23,167 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:23,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:57:23,298 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:57:23,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:57:23,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-16 02:57:23,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:23,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:26,743 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:26,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752687793] [2021-10-16 02:57:26,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752687793] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:26,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1030207775] [2021-10-16 02:57:26,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:57:26,745 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:57:26,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:57:26,749 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:57:26,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-16 02:57:27,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:57:27,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:57:27,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-16 02:57:27,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:27,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:27,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1030207775] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:27,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196684459] [2021-10-16 02:57:27,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 02:57:27,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:57:27,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:57:27,349 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:57:27,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-16 02:57:27,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 02:57:27,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:57:27,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-16 02:57:27,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:27,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:27,832 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:27,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196684459] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:27,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:57:27,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33, 33, 33, 33] total 64 [2021-10-16 02:57:27,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429233942] [2021-10-16 02:57:27,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-16 02:57:27,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:27,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-16 02:57:27,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2021-10-16 02:57:27,838 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 64 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 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) [2021-10-16 02:57:40,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:40,674 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2021-10-16 02:57:40,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-16 02:57:40,675 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 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 37 [2021-10-16 02:57:40,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:40,676 INFO L225 Difference]: With dead ends: 74 [2021-10-16 02:57:40,676 INFO L226 Difference]: Without dead ends: 70 [2021-10-16 02:57:40,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 15036.9ms TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2021-10-16 02:57:40,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-16 02:57:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-16 02:57:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 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) [2021-10-16 02:57:40,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2021-10-16 02:57:40,703 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 37 [2021-10-16 02:57:40,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:40,703 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2021-10-16 02:57:40,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 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) [2021-10-16 02:57:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2021-10-16 02:57:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-16 02:57:40,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:40,709 INFO L512 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:40,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:40,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-16 02:57:41,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-10-16 02:57:41,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:57:41,325 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:57:41,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:41,326 INFO L82 PathProgramCache]: Analyzing trace with hash 763241675, now seen corresponding path program 5 times [2021-10-16 02:57:41,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:41,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957133965] [2021-10-16 02:57:41,327 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-16 02:57:41,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:41,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:41,328 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:41,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:57:41,704 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-10-16 02:57:41,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:57:41,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-16 02:57:41,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:43,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:53,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:53,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957133965] [2021-10-16 02:57:53,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957133965] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:53,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [166505509] [2021-10-16 02:57:53,893 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-16 02:57:53,893 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:57:53,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:57:53,894 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:57:53,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-16 02:57:54,479 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-10-16 02:57:54,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:57:54,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-16 02:57:54,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:54,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:58:10,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:58:10,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [166505509] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:58:10,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489233194] [2021-10-16 02:58:10,183 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-16 02:58:10,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:58:10,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:58:10,189 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:58:10,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-16 02:58:10,675 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-10-16 02:58:10,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:58:10,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-16 02:58:10,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:58:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:58:10,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:58:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:58:31,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489233194] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:58:31,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:58:31,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65, 65, 65, 65] total 244 [2021-10-16 02:58:31,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435489481] [2021-10-16 02:58:31,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 244 states [2021-10-16 02:58:31,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:58:31,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2021-10-16 02:58:31,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14802, Invalid=44490, Unknown=0, NotChecked=0, Total=59292 [2021-10-16 02:58:31,399 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 244 states, 244 states have (on average 1.028688524590164) internal successors, (251), 244 states have internal predecessors, (251), 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) [2021-10-16 03:00:13,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:13,476 INFO L93 Difference]: Finished difference Result 138 states and 201 transitions. [2021-10-16 03:00:13,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-10-16 03:00:13,477 INFO L78 Accepts]: Start accepts. Automaton has has 244 states, 244 states have (on average 1.028688524590164) internal successors, (251), 244 states have internal predecessors, (251), 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 69 [2021-10-16 03:00:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:13,481 INFO L225 Difference]: With dead ends: 138 [2021-10-16 03:00:13,481 INFO L226 Difference]: Without dead ends: 134 [2021-10-16 03:00:13,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18284 ImplicationChecksByTransitivity, 144782.9ms TimeCoverageRelationStatistics Valid=23746, Invalid=70196, Unknown=0, NotChecked=0, Total=93942 [2021-10-16 03:00:13,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-16 03:00:13,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-16 03:00:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.0150375939849625) internal successors, (135), 133 states have internal predecessors, (135), 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) [2021-10-16 03:00:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2021-10-16 03:00:13,514 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 69 [2021-10-16 03:00:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:13,515 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2021-10-16 03:00:13,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 244 states, 244 states have (on average 1.028688524590164) internal successors, (251), 244 states have internal predecessors, (251), 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) [2021-10-16 03:00:13,515 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2021-10-16 03:00:13,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-16 03:00:13,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:13,518 INFO L512 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:00:13,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:13,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:13,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:14,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:00:14,122 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:14,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:14,123 INFO L82 PathProgramCache]: Analyzing trace with hash 840527819, now seen corresponding path program 6 times [2021-10-16 03:00:14,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:00:14,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432345632] [2021-10-16 03:00:14,124 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-16 03:00:14,124 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:00:14,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:00:14,125 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:00:14,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-16 03:00:14,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) [2021-10-16 03:00:14,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:00:14,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-16 03:00:14,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:19,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:20,178 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:00:20,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432345632] [2021-10-16 03:00:20,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432345632] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:20,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [814849081] [2021-10-16 03:00:20,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-16 03:00:20,179 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:00:20,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:00:20,181 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:00:20,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-10-16 03:00:21,291 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) [2021-10-16 03:00:21,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:00:21,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-16 03:00:21,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:21,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:22,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [814849081] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:22,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839422125] [2021-10-16 03:00:22,063 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-16 03:00:22,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:22,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:22,064 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:00:22,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-16 03:00:23,033 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) [2021-10-16 03:00:23,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:00:23,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 105 conjunts are in the unsatisfiable core [2021-10-16 03:00:23,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:23,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:23,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839422125] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:23,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:00:23,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104, 104, 104, 104, 104] total 105 [2021-10-16 03:00:23,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464125994] [2021-10-16 03:00:23,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-10-16 03:00:23,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:00:23,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-10-16 03:00:23,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=10712, Unknown=0, NotChecked=0, Total=10920 [2021-10-16 03:00:23,881 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand has 105 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 105 states have internal predecessors, (109), 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) [2021-10-16 03:00:28,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:28,829 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2021-10-16 03:00:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-16 03:00:28,832 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 105 states have internal predecessors, (109), 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 107 [2021-10-16 03:00:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:28,833 INFO L225 Difference]: With dead ends: 138 [2021-10-16 03:00:28,834 INFO L226 Difference]: Without dead ends: 134 [2021-10-16 03:00:28,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4407.9ms TimeCoverageRelationStatistics Valid=213, Invalid=10917, Unknown=0, NotChecked=0, Total=11130 [2021-10-16 03:00:28,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-16 03:00:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-16 03:00:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.0075187969924813) internal successors, (134), 133 states have internal predecessors, (134), 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) [2021-10-16 03:00:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2021-10-16 03:00:28,862 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 107 [2021-10-16 03:00:28,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:28,863 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2021-10-16 03:00:28,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 105 states have internal predecessors, (109), 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) [2021-10-16 03:00:28,863 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2021-10-16 03:00:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-16 03:00:28,866 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:28,866 INFO L512 BasicCegarLoop]: trace histogram [126, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:00:28,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:29,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:29,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:29,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:00:29,481 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:29,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:29,482 INFO L82 PathProgramCache]: Analyzing trace with hash -2142812981, now seen corresponding path program 7 times [2021-10-16 03:00:29,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:00:29,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802332846] [2021-10-16 03:00:29,483 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-16 03:00:29,483 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:00:29,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:00:29,484 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:00:29,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-16 03:00:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:30,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 102 conjunts are in the unsatisfiable core [2021-10-16 03:00:30,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 2626 proven. 5050 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-10-16 03:00:34,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 2626 proven. 5050 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-10-16 03:00:56,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:00:56,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802332846] [2021-10-16 03:00:56,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802332846] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:56,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1237251281] [2021-10-16 03:00:56,348 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-16 03:00:56,348 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:00:56,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:00:56,350 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:00:56,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-10-16 03:00:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:57,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 102 conjunts are in the unsatisfiable core [2021-10-16 03:00:57,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 2626 proven. 5050 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-10-16 03:00:58,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 2626 proven. 5050 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-10-16 03:00:58,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1237251281] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:58,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226143302] [2021-10-16 03:00:58,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-16 03:00:58,469 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:58,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:58,473 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:00:58,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-16 03:00:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:59,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 102 conjunts are in the unsatisfiable core [2021-10-16 03:00:59,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 2626 proven. 5050 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-10-16 03:00:59,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:00,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 2626 proven. 5050 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-10-16 03:01:00,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226143302] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:01:00,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:01:00,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103, 103, 103, 103] total 204 [2021-10-16 03:01:00,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511997735] [2021-10-16 03:01:00,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2021-10-16 03:01:00,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:00,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2021-10-16 03:01:00,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5556, Invalid=35856, Unknown=0, NotChecked=0, Total=41412 [2021-10-16 03:01:00,108 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand has 204 states, 204 states have (on average 1.0343137254901962) internal successors, (211), 204 states have internal predecessors, (211), 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) [2021-10-16 03:01:06,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:01:06,183 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2021-10-16 03:01:06,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-10-16 03:01:06,184 INFO L78 Accepts]: Start accepts. Automaton has has 204 states, 204 states have (on average 1.0343137254901962) internal successors, (211), 204 states have internal predecessors, (211), 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 133 [2021-10-16 03:01:06,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:01:06,185 INFO L225 Difference]: With dead ends: 134 [2021-10-16 03:01:06,185 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:01:06,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25377.1ms TimeCoverageRelationStatistics Valid=5556, Invalid=35856, Unknown=0, NotChecked=0, Total=41412 [2021-10-16 03:01:06,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:01:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:01:06,187 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) [2021-10-16 03:01:06,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:01:06,187 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 133 [2021-10-16 03:01:06,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:01:06,187 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:01:06,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 204 states have (on average 1.0343137254901962) internal successors, (211), 204 states have internal predecessors, (211), 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) [2021-10-16 03:01:06,188 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:01:06,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:01:06,190 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:01:06,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:06,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:06,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:06,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:01:06,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:01:06,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:01:07,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:01:13,627 WARN L207 SmtUtils]: Spent 6.25 s on a formula simplification. DAG size of input: 696 DAG size of output: 457 [2021-10-16 03:01:13,632 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:01:13,633 INFO L853 garLoopResultBuilder]: At program point L23-2(lines 23 26) the Hoare annotation is: (or (and (= (_ bv122 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv61 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv19 32)) (= ULTIMATE.start_main_~j~0 (_ bv38 32))) (and (= (_ bv150 32) ULTIMATE.start_main_~j~0) (= (_ bv75 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv72 32) ULTIMATE.start_main_~j~0) (= (_ bv36 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv72 32) ULTIMATE.start_main_~i~0) (= (_ bv144 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv94 32) ULTIMATE.start_main_~i~0) (= (_ bv188 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv20 32)) (= ULTIMATE.start_main_~j~0 (_ bv40 32))) (and (= (_ bv58 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv116 32))) (and (= (_ bv3 32) ULTIMATE.start_main_~i~0) (= (_ bv6 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv120 32) ULTIMATE.start_main_~j~0) (= (_ bv60 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv174 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv87 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv51 32)) (= ULTIMATE.start_main_~j~0 (_ bv102 32))) (and (= (_ bv88 32) ULTIMATE.start_main_~i~0) (= (_ bv176 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv172 32) ULTIMATE.start_main_~j~0) (= (_ bv86 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv45 32)) (= (_ bv90 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv55 32) ULTIMATE.start_main_~i~0) (= (_ bv110 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv82 32) ULTIMATE.start_main_~j~0) (= (_ bv41 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv8 32) ULTIMATE.start_main_~i~0) (= (_ bv16 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv146 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv73 32))) (and (= (_ bv84 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv42 32))) (and (= ULTIMATE.start_main_~j~0 (_ bv30 32)) (= ULTIMATE.start_main_~i~0 (_ bv15 32))) (and (= (_ bv11 32) ULTIMATE.start_main_~i~0) (= (_ bv22 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv112 32) ULTIMATE.start_main_~j~0) (= (_ bv56 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv21 32)) (= ULTIMATE.start_main_~j~0 (_ bv42 32))) (and (= (_ bv27 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv54 32))) (and (= ULTIMATE.start_main_~j~0 (_ bv178 32)) (= (_ bv89 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv104 32)) (= ULTIMATE.start_main_~i~0 (_ bv52 32))) (and (= ULTIMATE.start_main_~j~0 (_ bv168 32)) (= (_ bv84 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv18 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv9 32))) (and (= (_ bv88 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv44 32))) (and (= ULTIMATE.start_main_~j~0 (_ bv12 32)) (= (_ bv6 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv140 32) ULTIMATE.start_main_~j~0) (= (_ bv70 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv166 32)) (= (_ bv83 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv74 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv37 32))) (and (= (_ bv162 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv81 32))) (and (= (_ bv136 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv68 32))) (and (= (_ bv2 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv1 32))) (and (= ULTIMATE.start_main_~j~0 (_ bv10 32)) (= ULTIMATE.start_main_~i~0 (_ bv5 32))) (and (= (_ bv29 32) ULTIMATE.start_main_~i~0) (= (_ bv58 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv96 32) ULTIMATE.start_main_~j~0) (= (_ bv48 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv126 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv63 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv69 32)) (= ULTIMATE.start_main_~j~0 (_ bv138 32))) (and (= (_ bv85 32) ULTIMATE.start_main_~i~0) (= (_ bv170 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv194 32)) (= (_ bv97 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv54 32)) (= ULTIMATE.start_main_~j~0 (_ bv108 32))) (and (= (_ bv91 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv182 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv12 32)) (= ULTIMATE.start_main_~j~0 (_ bv24 32))) (and (= (_ bv98 32) ULTIMATE.start_main_~i~0) (= (_ bv196 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv0 32)) (= ULTIMATE.start_main_~j~0 (_ bv0 32))) (and (= (_ bv48 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv24 32))) (and (= (_ bv78 32) ULTIMATE.start_main_~i~0) (= (_ bv156 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv46 32)) (= (_ bv23 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv14 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv7 32))) (and (= (_ bv132 32) ULTIMATE.start_main_~j~0) (= (_ bv66 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv64 32)) (= ULTIMATE.start_main_~i~0 (_ bv32 32))) (and (= (_ bv16 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv32 32))) (and (= (_ bv22 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv44 32))) (and (= (_ bv79 32) ULTIMATE.start_main_~i~0) (= (_ bv158 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv114 32)) (= ULTIMATE.start_main_~i~0 (_ bv57 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv13 32)) (= (_ bv26 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv200 32) ULTIMATE.start_main_~j~0) (= (_ bv100 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv80 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv160 32))) (and (= (_ bv39 32) ULTIMATE.start_main_~i~0) (= (_ bv78 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv77 32)) (= ULTIMATE.start_main_~j~0 (_ bv154 32))) (and (= (_ bv118 32) ULTIMATE.start_main_~j~0) (= (_ bv59 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv56 32) ULTIMATE.start_main_~j~0) (= (_ bv28 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv68 32)) (= (_ bv34 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv50 32)) (= (_ bv100 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv198 32) ULTIMATE.start_main_~j~0) (= (_ bv99 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv142 32)) (= ULTIMATE.start_main_~i~0 (_ bv71 32))) (and (= (_ bv152 32) ULTIMATE.start_main_~j~0) (= (_ bv76 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv190 32) ULTIMATE.start_main_~j~0) (= (_ bv95 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv18 32) ULTIMATE.start_main_~i~0) (= (_ bv36 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv186 32)) (= ULTIMATE.start_main_~i~0 (_ bv93 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv38 32)) (= (_ bv76 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv26 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv52 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv43 32)) (= (_ bv86 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv130 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv65 32))) (and (= (_ bv128 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv64 32))) (and (= (_ bv28 32) ULTIMATE.start_main_~j~0) (= (_ bv14 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv25 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv50 32))) (and (= (_ bv53 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv106 32))) (and (= (_ bv49 32) ULTIMATE.start_main_~i~0) (= (_ bv98 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv47 32)) (= (_ bv94 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv2 32) ULTIMATE.start_main_~i~0) (= (_ bv4 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv40 32)) (= (_ bv80 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv46 32)) (= ULTIMATE.start_main_~j~0 (_ bv92 32))) (and (= (_ bv184 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv92 32))) (and (= (_ bv34 32) ULTIMATE.start_main_~j~0) (= (_ bv17 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv74 32) ULTIMATE.start_main_~i~0) (= (_ bv148 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv4 32) ULTIMATE.start_main_~i~0) (= (_ bv8 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv134 32) ULTIMATE.start_main_~j~0) (= (_ bv67 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv180 32) ULTIMATE.start_main_~j~0) (= (_ bv90 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv96 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv192 32))) (and (= ULTIMATE.start_main_~j~0 (_ bv20 32)) (= ULTIMATE.start_main_~i~0 (_ bv10 32))) (and (= (_ bv35 32) ULTIMATE.start_main_~i~0) (= (_ bv70 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv164 32)) (= (_ bv82 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv66 32) ULTIMATE.start_main_~j~0) (= (_ bv33 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv62 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv124 32))) (and (= (_ bv60 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv30 32))) (and (= (_ bv31 32) ULTIMATE.start_main_~i~0) (= (_ bv62 32) ULTIMATE.start_main_~j~0))) [2021-10-16 03:01:13,633 INFO L857 garLoopResultBuilder]: For program point L23-3(lines 23 26) no Hoare annotation was computed. [2021-10-16 03:01:13,633 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-16 03:01:13,633 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 03:01:13,633 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:01:13,633 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 03:01:13,634 INFO L860 garLoopResultBuilder]: At program point L28(lines 19 29) the Hoare annotation is: true [2021-10-16 03:01:13,634 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-16 03:01:13,634 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-16 03:01:13,634 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-16 03:01:13,634 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-16 03:01:13,639 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:01:13,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:01:13 BoogieIcfgContainer [2021-10-16 03:01:13,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:01:13,677 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:01:13,677 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:01:13,677 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:01:13,678 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:57:11" (3/4) ... [2021-10-16 03:01:13,680 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 03:01:13,690 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-16 03:01:13,690 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 03:01:13,690 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:01:13,690 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:01:13,725 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:01:13,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:01:13,727 INFO L168 Benchmark]: Toolchain (without parser) took 242687.99 ms. Allocated memory was 62.9 MB in the beginning and 125.8 MB in the end (delta: 62.9 MB). Free memory was 45.0 MB in the beginning and 24.9 MB in the end (delta: 20.2 MB). Peak memory consumption was 82.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:01:13,727 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 62.9 MB. Free memory is still 43.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:01:13,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.73 ms. Allocated memory is still 62.9 MB. Free memory was 44.8 MB in the beginning and 46.1 MB in the end (delta: -1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:01:13,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.52 ms. Allocated memory is still 62.9 MB. Free memory was 46.1 MB in the beginning and 44.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:01:13,729 INFO L168 Benchmark]: Boogie Preprocessor took 53.25 ms. Allocated memory is still 62.9 MB. Free memory was 44.4 MB in the beginning and 43.6 MB in the end (delta: 843.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:01:13,729 INFO L168 Benchmark]: RCFGBuilder took 370.14 ms. Allocated memory is still 62.9 MB. Free memory was 43.3 MB in the beginning and 34.4 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:01:13,730 INFO L168 Benchmark]: TraceAbstraction took 241857.92 ms. Allocated memory was 62.9 MB in the beginning and 125.8 MB in the end (delta: 62.9 MB). Free memory was 33.9 MB in the beginning and 27.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 76.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:01:13,733 INFO L168 Benchmark]: Witness Printer took 49.09 ms. Allocated memory is still 125.8 MB. Free memory was 27.0 MB in the beginning and 24.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:01:13,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 62.9 MB. Free memory is still 43.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.73 ms. Allocated memory is still 62.9 MB. Free memory was 44.8 MB in the beginning and 46.1 MB in the end (delta: -1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.52 ms. Allocated memory is still 62.9 MB. Free memory was 46.1 MB in the beginning and 44.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.25 ms. Allocated memory is still 62.9 MB. Free memory was 44.4 MB in the beginning and 43.6 MB in the end (delta: 843.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 370.14 ms. Allocated memory is still 62.9 MB. Free memory was 43.3 MB in the beginning and 34.4 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 241857.92 ms. Allocated memory was 62.9 MB in the beginning and 125.8 MB in the end (delta: 62.9 MB). Free memory was 33.9 MB in the beginning and 27.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 76.8 MB. Max. memory is 16.1 GB. * Witness Printer took 49.09 ms. Allocated memory is still 125.8 MB. Free memory was 27.0 MB in the beginning and 24.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 241734.9ms, OverallIterations: 9, TraceHistogramMax: 126, EmptinessCheckTime: 40.6ms, AutomataDifference: 129303.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6840.4ms, InitialAbstractionConstructionTime: 14.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 63 SDtfs, 303 SDslu, 1043 SDs, 0 SdLazy, 26067 SolverSat, 606 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12556.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2433 GetRequests, 1641 SyntacticMatches, 0 SemanticMatches, 792 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18932 ImplicationChecksByTransitivity, 194753.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=7, InterpolantAutomatonStates: 463, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 112.1ms AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 104 NumberOfFragments, 709 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 575.5ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 3060 FormulaSimplificationTreeSizeReductionInter, 6257.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 332.8ms SsaConstructionTime, 3777.3ms SatisfiabilityAnalysisTime, 91757.3ms InterpolantComputationTime, 1181 NumberOfCodeBlocks, 1181 NumberOfCodeBlocksAsserted, 290 NumberOfCheckSat, 2316 ConstructedInterpolants, 0 QuantifiedInterpolants, 8690 SizeOfPredicates, 42 NumberOfNonLiveVariables, 3658 ConjunctsInSsa, 1007 ConjunctsInUnsatCore, 46 InterpolantComputations, 4 PerfectInterpolantSequences, 17706/93588 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((122bv32 == j && i == 61bv32) || (i == 19bv32 && j == 38bv32)) || (150bv32 == j && 75bv32 == i)) || (72bv32 == j && 36bv32 == i)) || (72bv32 == i && 144bv32 == j)) || (94bv32 == i && 188bv32 == j)) || (i == 20bv32 && j == 40bv32)) || (58bv32 == i && j == 116bv32)) || (3bv32 == i && 6bv32 == j)) || (120bv32 == j && 60bv32 == i)) || (174bv32 == j && i == 87bv32)) || (i == 51bv32 && j == 102bv32)) || (88bv32 == i && 176bv32 == j)) || (172bv32 == j && 86bv32 == i)) || (i == 45bv32 && 90bv32 == j)) || (55bv32 == i && 110bv32 == j)) || (82bv32 == j && 41bv32 == i)) || (8bv32 == i && 16bv32 == j)) || (146bv32 == j && i == 73bv32)) || (84bv32 == j && i == 42bv32)) || (j == 30bv32 && i == 15bv32)) || (11bv32 == i && 22bv32 == j)) || (112bv32 == j && 56bv32 == i)) || (i == 21bv32 && j == 42bv32)) || (27bv32 == i && j == 54bv32)) || (j == 178bv32 && 89bv32 == i)) || (j == 104bv32 && i == 52bv32)) || (j == 168bv32 && 84bv32 == i)) || (18bv32 == j && i == 9bv32)) || (88bv32 == j && i == 44bv32)) || (j == 12bv32 && 6bv32 == i)) || (140bv32 == j && 70bv32 == i)) || (j == 166bv32 && 83bv32 == i)) || (74bv32 == j && i == 37bv32)) || (162bv32 == j && i == 81bv32)) || (136bv32 == j && i == 68bv32)) || (2bv32 == j && i == 1bv32)) || (j == 10bv32 && i == 5bv32)) || (29bv32 == i && 58bv32 == j)) || (96bv32 == j && 48bv32 == i)) || (126bv32 == j && i == 63bv32)) || (i == 69bv32 && j == 138bv32)) || (85bv32 == i && 170bv32 == j)) || (j == 194bv32 && 97bv32 == i)) || (i == 54bv32 && j == 108bv32)) || (91bv32 == i && j == 182bv32)) || (i == 12bv32 && j == 24bv32)) || (98bv32 == i && 196bv32 == j)) || (i == 0bv32 && j == 0bv32)) || (48bv32 == j && i == 24bv32)) || (78bv32 == i && 156bv32 == j)) || (j == 46bv32 && 23bv32 == i)) || (14bv32 == j && i == 7bv32)) || (132bv32 == j && 66bv32 == i)) || (j == 64bv32 && i == 32bv32)) || (16bv32 == i && j == 32bv32)) || (22bv32 == i && j == 44bv32)) || (79bv32 == i && 158bv32 == j)) || (j == 114bv32 && i == 57bv32)) || (i == 13bv32 && 26bv32 == j)) || (200bv32 == j && 100bv32 == i)) || (80bv32 == i && j == 160bv32)) || (39bv32 == i && 78bv32 == j)) || (i == 77bv32 && j == 154bv32)) || (118bv32 == j && 59bv32 == i)) || (56bv32 == j && 28bv32 == i)) || (j == 68bv32 && 34bv32 == i)) || (i == 50bv32 && 100bv32 == j)) || (198bv32 == j && 99bv32 == i)) || (j == 142bv32 && i == 71bv32)) || (152bv32 == j && 76bv32 == i)) || (190bv32 == j && 95bv32 == i)) || (18bv32 == i && 36bv32 == j)) || (j == 186bv32 && i == 93bv32)) || (i == 38bv32 && 76bv32 == j)) || (26bv32 == i && j == 52bv32)) || (i == 43bv32 && 86bv32 == j)) || (130bv32 == j && i == 65bv32)) || (128bv32 == j && i == 64bv32)) || (28bv32 == j && 14bv32 == i)) || (25bv32 == i && j == 50bv32)) || (53bv32 == i && j == 106bv32)) || (49bv32 == i && 98bv32 == j)) || (i == 47bv32 && 94bv32 == j)) || (2bv32 == i && 4bv32 == j)) || (i == 40bv32 && 80bv32 == j)) || (i == 46bv32 && j == 92bv32)) || (184bv32 == j && i == 92bv32)) || (34bv32 == j && 17bv32 == i)) || (74bv32 == i && 148bv32 == j)) || (4bv32 == i && 8bv32 == j)) || (134bv32 == j && 67bv32 == i)) || (180bv32 == j && 90bv32 == i)) || (96bv32 == i && j == 192bv32)) || (j == 20bv32 && i == 10bv32)) || (35bv32 == i && 70bv32 == j)) || (j == 164bv32 && 82bv32 == i)) || (66bv32 == j && 33bv32 == i)) || (62bv32 == i && j == 124bv32)) || (60bv32 == j && i == 30bv32)) || (31bv32 == i && 62bv32 == j) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-16 03:01:13,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e7aea7c-f026-462e-b443-01e28ec4f48c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...