./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P --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 ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:15:06,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:15:06,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:15:06,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:15:06,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:15:06,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:15:06,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:15:06,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:15:06,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:15:06,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:15:06,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:15:06,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:15:06,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:15:06,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:15:06,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:15:06,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:15:06,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:15:06,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:15:06,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:15:06,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:15:06,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:15:06,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:15:06,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:15:06,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:15:06,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:15:06,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:15:06,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:15:06,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:15:06,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:15:06,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:15:06,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:15:06,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:15:06,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:15:06,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:15:06,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:15:06,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:15:06,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:15:06,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:15:06,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:15:06,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:15:06,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:15:06,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:15:06,568 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:15:06,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:15:06,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:15:06,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:15:06,571 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:15:06,571 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:15:06,571 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:15:06,572 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:15:06,572 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:15:06,573 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:15:06,573 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:15:06,574 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:15:06,574 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:15:06,574 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:15:06,575 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:15:06,575 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:15:06,575 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:15:06,576 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:15:06,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:15:06,577 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:15:06,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:15:06,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:15:06,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:15:06,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:15:06,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:15:06,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:15:06,578 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:15:06,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:15:06,579 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:15:06,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:15:06,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:15:06,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:15:06,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:15:06,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:15:06,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:15:06,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:15:06,581 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:15:06,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:15:06,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:15:06,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:15:06,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:15:06,582 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_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 [2021-11-20 23:15:06,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:15:06,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:15:06,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:15:06,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:15:06,927 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:15:06,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2021-11-20 23:15:07,008 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/data/8c14a7111/766e434234bf499882516254383e3bc3/FLAG721e3e790 [2021-11-20 23:15:07,383 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.parser.UltimateCdtExternalSettingsProvider.getSettings(UltimateCdtExternalSettingsProvider.java:67) at org.eclipse.cdt.core.settings.model.extension.CExternalSettingProvider.getSettings(CExternalSettingProvider.java:48) at org.eclipse.cdt.internal.core.settings.model.ExtensionContainerFactory$CExtensionSettingProviderDescriptor.getContainer(ExtensionContainerFactory.java:110) at org.eclipse.cdt.internal.core.settings.model.ExtensionContainerFactory.createContainer(ExtensionContainerFactory.java:186) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager$ContainerDescriptor.(CExternalSettingsManager.java:147) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager.checkExternalSettingsChange(CExternalSettingsManager.java:683) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager.processContainerChange(CExternalSettingsManager.java:501) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager$2.run(CExternalSettingsManager.java:615) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager$5.run(CProjectDescriptionManager.java:508) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2292) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager.runAtomic(CProjectDescriptionManager.java:504) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager$4.run(CProjectDescriptionManager.java:484) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-20 23:15:07,564 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:15:07,564 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2021-11-20 23:15:07,572 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/data/8c14a7111/766e434234bf499882516254383e3bc3/FLAG721e3e790 [2021-11-20 23:15:07,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/data/8c14a7111/766e434234bf499882516254383e3bc3 [2021-11-20 23:15:07,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:15:07,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:15:07,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:15:07,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:15:07,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:15:07,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:15:07" (1/1) ... [2021-11-20 23:15:07,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b2f58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:07, skipping insertion in model container [2021-11-20 23:15:07,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:15:07" (1/1) ... [2021-11-20 23:15:07,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:15:07,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:15:08,165 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2021-11-20 23:15:08,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:15:08,207 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:15:08,230 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2021-11-20 23:15:08,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:15:08,268 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:15:08,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:08 WrapperNode [2021-11-20 23:15:08,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:15:08,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:15:08,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:15:08,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:15:08,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:08" (1/1) ... [2021-11-20 23:15:08,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:08" (1/1) ... [2021-11-20 23:15:08,309 INFO L137 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2021-11-20 23:15:08,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:15:08,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:15:08,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:15:08,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:15:08,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:08" (1/1) ... [2021-11-20 23:15:08,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:08" (1/1) ... [2021-11-20 23:15:08,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:08" (1/1) ... [2021-11-20 23:15:08,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:08" (1/1) ... [2021-11-20 23:15:08,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:08" (1/1) ... [2021-11-20 23:15:08,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:08" (1/1) ... [2021-11-20 23:15:08,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:08" (1/1) ... [2021-11-20 23:15:08,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:15:08,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:15:08,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:15:08,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:15:08,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:08" (1/1) ... [2021-11-20 23:15:08,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:15:08,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:08,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:15:08,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:15:08,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:15:08,441 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:15:08,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:15:08,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:15:08,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:15:08,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:15:08,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:15:08,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:15:08,510 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:15:08,511 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:15:08,699 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:15:08,735 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:15:08,736 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 23:15:08,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:15:08 BoogieIcfgContainer [2021-11-20 23:15:08,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:15:08,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:15:08,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:15:08,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:15:08,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:15:07" (1/3) ... [2021-11-20 23:15:08,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514a2ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:15:08, skipping insertion in model container [2021-11-20 23:15:08,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:15:08" (2/3) ... [2021-11-20 23:15:08,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514a2ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:15:08, skipping insertion in model container [2021-11-20 23:15:08,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:15:08" (3/3) ... [2021-11-20 23:15:08,773 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2021-11-20 23:15:08,779 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:15:08,780 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:15:08,874 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:15:08,884 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:15:08,884 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:15:08,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 16 states have internal predecessors, (20), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-20 23:15:08,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 23:15:08,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:08,925 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:08,926 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:08,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:08,932 INFO L85 PathProgramCache]: Analyzing trace with hash 966807424, now seen corresponding path program 1 times [2021-11-20 23:15:08,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:08,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839120066] [2021-11-20 23:15:08,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:08,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:09,062 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:15:09,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392085274] [2021-11-20 23:15:09,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:09,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:09,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:09,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:15:09,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:15:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:09,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 23:15:09,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 23:15:09,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:15:09,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:09,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839120066] [2021-11-20 23:15:09,355 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:15:09,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392085274] [2021-11-20 23:15:09,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392085274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:09,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:09,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:15:09,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633797472] [2021-11-20 23:15:09,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:09,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:15:09,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:09,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:15:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:15:09,414 INFO L87 Difference]: Start difference. First operand has 30 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 16 states have internal predecessors, (20), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:15:09,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:09,469 INFO L93 Difference]: Finished difference Result 49 states and 78 transitions. [2021-11-20 23:15:09,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:15:09,474 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2021-11-20 23:15:09,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:09,485 INFO L225 Difference]: With dead ends: 49 [2021-11-20 23:15:09,485 INFO L226 Difference]: Without dead ends: 28 [2021-11-20 23:15:09,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:15:09,497 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:09,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:15:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-20 23:15:09,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-20 23:15:09,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-20 23:15:09,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2021-11-20 23:15:09,551 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 26 [2021-11-20 23:15:09,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:09,553 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2021-11-20 23:15:09,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:15:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2021-11-20 23:15:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 23:15:09,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:09,556 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:09,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:09,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-20 23:15:09,760 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:09,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:09,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1643993843, now seen corresponding path program 1 times [2021-11-20 23:15:09,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:09,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137533467] [2021-11-20 23:15:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:09,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:09,796 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:15:09,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381673832] [2021-11-20 23:15:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:09,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:09,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:09,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:15:09,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:15:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:09,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:15:09,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-20 23:15:10,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-20 23:15:10,277 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:10,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137533467] [2021-11-20 23:15:10,277 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:15:10,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381673832] [2021-11-20 23:15:10,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381673832] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:15:10,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1525204102] [2021-11-20 23:15:10,310 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-20 23:15:10,310 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:15:10,314 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:15:10,320 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:15:10,320 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:15:13,586 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 12 for LOIs [2021-11-20 23:15:13,601 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:15:14,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1525204102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:14,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:15:14,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 5] total 14 [2021-11-20 23:15:14,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947726225] [2021-11-20 23:15:14,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:14,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:15:14,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:14,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:15:14,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:15:14,152 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand has 11 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 23:15:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:14,360 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2021-11-20 23:15:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:15:14,361 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2021-11-20 23:15:14,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:14,362 INFO L225 Difference]: With dead ends: 38 [2021-11-20 23:15:14,362 INFO L226 Difference]: Without dead ends: 30 [2021-11-20 23:15:14,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:15:14,365 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:14,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 53 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:15:14,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-20 23:15:14,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-20 23:15:14,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-20 23:15:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2021-11-20 23:15:14,380 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 27 [2021-11-20 23:15:14,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:14,381 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2021-11-20 23:15:14,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 23:15:14,381 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2021-11-20 23:15:14,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 23:15:14,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:14,383 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:14,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:14,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:14,598 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:14,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:14,599 INFO L85 PathProgramCache]: Analyzing trace with hash -575116102, now seen corresponding path program 1 times [2021-11-20 23:15:14,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:14,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840323942] [2021-11-20 23:15:14,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:14,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:14,622 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:15:14,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84524224] [2021-11-20 23:15:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:14,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:14,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:14,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:15:14,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:15:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:14,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 23:15:14,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-20 23:15:14,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 23:15:14,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:14,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840323942] [2021-11-20 23:15:14,937 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:15:14,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84524224] [2021-11-20 23:15:14,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84524224] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:15:14,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:15:14,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2021-11-20 23:15:14,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814498964] [2021-11-20 23:15:14,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:14,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:15:14,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:14,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:15:14,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:15:14,943 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:15:15,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:15,093 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-20 23:15:15,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:15:15,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 28 [2021-11-20 23:15:15,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:15,095 INFO L225 Difference]: With dead ends: 36 [2021-11-20 23:15:15,095 INFO L226 Difference]: Without dead ends: 34 [2021-11-20 23:15:15,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:15:15,097 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:15,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 111 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:15:15,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-20 23:15:15,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-20 23:15:15,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-20 23:15:15,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-11-20 23:15:15,108 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 28 [2021-11-20 23:15:15,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:15,109 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-11-20 23:15:15,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:15:15,109 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-11-20 23:15:15,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 23:15:15,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:15,111 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:15,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-20 23:15:15,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:15,332 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:15,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:15,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1810277145, now seen corresponding path program 1 times [2021-11-20 23:15:15,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:15,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948286791] [2021-11-20 23:15:15,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:15,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:15,346 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:15:15,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208772340] [2021-11-20 23:15:15,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:15,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:15,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:15,348 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:15:15,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:15:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:15,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 23:15:15,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 23:15:15,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 23:15:15,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:15,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948286791] [2021-11-20 23:15:15,895 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:15:15,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208772340] [2021-11-20 23:15:15,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208772340] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:15:15,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:15:15,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2021-11-20 23:15:15,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363632968] [2021-11-20 23:15:15,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:15,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:15:15,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:15:15,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:15:15,907 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:15:15,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:15,972 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2021-11-20 23:15:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:15:15,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 33 [2021-11-20 23:15:15,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:15,976 INFO L225 Difference]: With dead ends: 47 [2021-11-20 23:15:15,976 INFO L226 Difference]: Without dead ends: 45 [2021-11-20 23:15:15,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:15:15,979 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:15,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 137 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:15:15,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-20 23:15:16,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-11-20 23:15:16,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-20 23:15:16,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2021-11-20 23:15:16,007 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 33 [2021-11-20 23:15:16,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:16,008 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2021-11-20 23:15:16,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:15:16,008 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2021-11-20 23:15:16,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-20 23:15:16,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:16,013 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:16,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:16,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:16,236 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:16,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:16,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1313498982, now seen corresponding path program 1 times [2021-11-20 23:15:16,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:16,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347423361] [2021-11-20 23:15:16,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:16,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:16,265 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:15:16,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515836491] [2021-11-20 23:15:16,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:16,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:16,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:16,275 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:15:16,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 23:15:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:16,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-20 23:15:16,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-20 23:15:16,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:16,711 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:16,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347423361] [2021-11-20 23:15:16,712 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:15:16,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515836491] [2021-11-20 23:15:16,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515836491] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:15:16,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [125820361] [2021-11-20 23:15:16,717 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-20 23:15:16,718 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:15:16,718 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:15:16,720 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:15:16,720 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:15:20,881 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2021-11-20 23:15:21,012 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 12 for LOIs [2021-11-20 23:15:21,023 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:15:21,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [125820361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:21,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:15:21,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 20 [2021-11-20 23:15:21,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978747496] [2021-11-20 23:15:21,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:21,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:15:21,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:21,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:15:21,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:15:21,831 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-20 23:15:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:22,409 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2021-11-20 23:15:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:15:22,410 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 38 [2021-11-20 23:15:22,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:22,411 INFO L225 Difference]: With dead ends: 65 [2021-11-20 23:15:22,411 INFO L226 Difference]: Without dead ends: 63 [2021-11-20 23:15:22,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:15:22,413 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:22,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 58 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:15:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-20 23:15:22,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2021-11-20 23:15:22,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-20 23:15:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2021-11-20 23:15:22,430 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 38 [2021-11-20 23:15:22,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:22,431 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2021-11-20 23:15:22,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-20 23:15:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2021-11-20 23:15:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-20 23:15:22,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:22,433 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:22,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:15:22,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:22,648 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:15:22,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:22,648 INFO L85 PathProgramCache]: Analyzing trace with hash 434944611, now seen corresponding path program 1 times [2021-11-20 23:15:22,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:22,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403707238] [2021-11-20 23:15:22,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:22,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:22,660 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:15:22,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90239206] [2021-11-20 23:15:22,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:22,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:15:22,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:15:22,661 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:15:22,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 23:15:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:22,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:15:22,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:15:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-20 23:15:22,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:15:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-20 23:15:23,003 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:23,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403707238] [2021-11-20 23:15:23,004 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:15:23,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90239206] [2021-11-20 23:15:23,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90239206] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:15:23,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [593058214] [2021-11-20 23:15:23,006 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-20 23:15:23,006 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:15:23,007 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:15:23,007 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:15:23,007 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:16:12,471 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2021-11-20 23:16:12,605 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 12 for LOIs [2021-11-20 23:16:12,621 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:16:14,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [593058214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:14,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:16:14,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7, 7] total 21 [2021-11-20 23:16:14,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213516628] [2021-11-20 23:16:14,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:14,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:16:14,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:14,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:16:14,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:16:14,491 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 7 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2021-11-20 23:16:14,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:14,958 INFO L93 Difference]: Finished difference Result 87 states and 108 transitions. [2021-11-20 23:16:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:16:14,959 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 7 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) Word has length 52 [2021-11-20 23:16:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:14,960 INFO L225 Difference]: With dead ends: 87 [2021-11-20 23:16:14,961 INFO L226 Difference]: Without dead ends: 79 [2021-11-20 23:16:14,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 126 SyntacticMatches, 9 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:16:14,963 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 31 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:14,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 58 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 23:16:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-20 23:16:14,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-11-20 23:16:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 46 states have internal predecessors, (51), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-20 23:16:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2021-11-20 23:16:14,981 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 52 [2021-11-20 23:16:14,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:14,982 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2021-11-20 23:16:14,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 7 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2021-11-20 23:16:14,983 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2021-11-20 23:16:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-20 23:16:14,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:14,984 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:15,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-20 23:16:15,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 23:16:15,191 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:16:15,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:15,192 INFO L85 PathProgramCache]: Analyzing trace with hash -331691367, now seen corresponding path program 1 times [2021-11-20 23:16:15,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:15,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687740866] [2021-11-20 23:16:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:15,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:15,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:16:15,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037491089] [2021-11-20 23:16:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:15,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:16:15,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:16:15,205 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:16:15,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 23:16:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:15,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 23:16:15,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:16:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-20 23:16:15,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:16:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-20 23:16:15,592 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:15,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687740866] [2021-11-20 23:16:15,592 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:16:15,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037491089] [2021-11-20 23:16:15,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037491089] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:16:15,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [979487860] [2021-11-20 23:16:15,601 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-20 23:16:15,602 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:16:15,602 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:16:15,602 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:16:15,603 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:16:32,512 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 24 for LOIs [2021-11-20 23:16:32,611 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 12 for LOIs [2021-11-20 23:16:32,621 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:16:33,494 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:16:33,494 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:16:33,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-11-20 23:16:33,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850883938] [2021-11-20 23:16:33,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 23:16:33,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 23:16:33,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:33,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 23:16:33,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-11-20 23:16:33,497 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 23:16:33,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:33,676 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2021-11-20 23:16:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:16:33,676 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 60 [2021-11-20 23:16:33,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:33,680 INFO L225 Difference]: With dead ends: 93 [2021-11-20 23:16:33,680 INFO L226 Difference]: Without dead ends: 91 [2021-11-20 23:16:33,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 153 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-11-20 23:16:33,682 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 13 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:33,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 128 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:16:33,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-20 23:16:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-11-20 23:16:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-20 23:16:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 111 transitions. [2021-11-20 23:16:33,706 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 111 transitions. Word has length 60 [2021-11-20 23:16:33,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:33,707 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 111 transitions. [2021-11-20 23:16:33,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 23:16:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 111 transitions. [2021-11-20 23:16:33,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 23:16:33,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:33,710 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:33,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:16:33,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 23:16:33,929 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:16:33,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:33,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1984692712, now seen corresponding path program 2 times [2021-11-20 23:16:33,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:33,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546730239] [2021-11-20 23:16:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:33,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:33,951 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:16:33,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848759677] [2021-11-20 23:16:33,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:16:33,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:16:33,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:16:33,953 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:16:33,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 23:16:34,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-20 23:16:34,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:16:34,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 23:16:34,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:16:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-20 23:16:34,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:16:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-20 23:16:34,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:34,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546730239] [2021-11-20 23:16:34,413 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:16:34,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848759677] [2021-11-20 23:16:34,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848759677] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:16:34,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1249006496] [2021-11-20 23:16:34,416 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-20 23:16:34,416 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:16:34,416 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:16:34,417 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:16:34,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:16:52,531 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 24 for LOIs [2021-11-20 23:16:52,633 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 12 for LOIs [2021-11-20 23:16:52,647 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:16:53,707 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:16:53,707 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:16:53,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-11-20 23:16:53,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127006185] [2021-11-20 23:16:53,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 23:16:53,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 23:16:53,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 23:16:53,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-11-20 23:16:53,710 INFO L87 Difference]: Start difference. First operand 91 states and 111 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 23:16:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:53,931 INFO L93 Difference]: Finished difference Result 98 states and 118 transitions. [2021-11-20 23:16:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:16:53,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2021-11-20 23:16:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:53,934 INFO L225 Difference]: With dead ends: 98 [2021-11-20 23:16:53,934 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 23:16:53,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-11-20 23:16:53,936 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:53,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 135 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:16:53,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 23:16:53,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-11-20 23:16:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 57 states have internal predecessors, (61), 28 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-20 23:16:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2021-11-20 23:16:53,958 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 65 [2021-11-20 23:16:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:53,959 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2021-11-20 23:16:53,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 23:16:53,960 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2021-11-20 23:16:53,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-20 23:16:53,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:53,961 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:53,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 23:16:54,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:16:54,175 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:16:54,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:54,175 INFO L85 PathProgramCache]: Analyzing trace with hash -2003369438, now seen corresponding path program 1 times [2021-11-20 23:16:54,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:54,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686209097] [2021-11-20 23:16:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:54,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:54,184 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:16:54,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274966674] [2021-11-20 23:16:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:54,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:16:54,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:16:54,185 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:16:54,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 23:16:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:54,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-20 23:16:54,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:16:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-20 23:16:54,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:16:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-20 23:16:55,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:55,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686209097] [2021-11-20 23:16:55,299 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:16:55,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274966674] [2021-11-20 23:16:55,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274966674] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:16:55,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [545908918] [2021-11-20 23:16:55,302 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-20 23:16:55,302 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:16:55,302 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:16:55,302 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:16:55,303 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:05,296 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 14 for LOIs [2021-11-20 23:17:05,370 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 12 for LOIs [2021-11-20 23:17:05,383 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:17:09,427 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:17:09,428 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:17:09,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-11-20 23:17:09,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478733199] [2021-11-20 23:17:09,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:09,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:17:09,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:09,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:17:09,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 23:17:09,431 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand has 19 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2021-11-20 23:17:12,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:12,851 INFO L93 Difference]: Finished difference Result 164 states and 216 transitions. [2021-11-20 23:17:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 23:17:12,852 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 74 [2021-11-20 23:17:12,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:12,854 INFO L225 Difference]: With dead ends: 164 [2021-11-20 23:17:12,854 INFO L226 Difference]: Without dead ends: 162 [2021-11-20 23:17:12,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 178 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=401, Invalid=2905, Unknown=0, NotChecked=0, Total=3306 [2021-11-20 23:17:12,857 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 60 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:12,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 376 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 23:17:12,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-20 23:17:12,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 156. [2021-11-20 23:17:12,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 87 states have (on average 1.160919540229885) internal successors, (101), 91 states have internal predecessors, (101), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-20 23:17:12,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 206 transitions. [2021-11-20 23:17:12,904 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 206 transitions. Word has length 74 [2021-11-20 23:17:12,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:12,905 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 206 transitions. [2021-11-20 23:17:12,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2021-11-20 23:17:12,905 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 206 transitions. [2021-11-20 23:17:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:17:12,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:12,907 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:12,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:13,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:13,122 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:17:13,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:13,123 INFO L85 PathProgramCache]: Analyzing trace with hash -134461569, now seen corresponding path program 1 times [2021-11-20 23:17:13,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:13,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169992885] [2021-11-20 23:17:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:13,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:13,133 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:17:13,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540571357] [2021-11-20 23:17:13,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:13,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:13,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:13,139 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:13,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 23:17:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:13,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-20 23:17:13,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 35 proven. 15 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-20 23:17:13,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-11-20 23:17:13,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:13,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169992885] [2021-11-20 23:17:13,820 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:17:13,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540571357] [2021-11-20 23:17:13,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540571357] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:13,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1780661496] [2021-11-20 23:17:13,823 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2021-11-20 23:17:13,823 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:17:13,823 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:17:13,824 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:17:13,824 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:25,584 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 14 for LOIs [2021-11-20 23:17:25,654 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 12 for LOIs [2021-11-20 23:17:25,666 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:17:28,326 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:17:28,327 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:17:28,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2021-11-20 23:17:28,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413909647] [2021-11-20 23:17:28,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:28,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:17:28,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:17:28,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1102, Unknown=0, NotChecked=0, Total=1260 [2021-11-20 23:17:28,329 INFO L87 Difference]: Start difference. First operand 156 states and 206 transitions. Second operand has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-20 23:17:29,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:29,389 INFO L93 Difference]: Finished difference Result 173 states and 221 transitions. [2021-11-20 23:17:29,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:17:29,390 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 79 [2021-11-20 23:17:29,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:29,392 INFO L225 Difference]: With dead ends: 173 [2021-11-20 23:17:29,392 INFO L226 Difference]: Without dead ends: 167 [2021-11-20 23:17:29,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 200 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=233, Invalid=1747, Unknown=0, NotChecked=0, Total=1980 [2021-11-20 23:17:29,394 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 44 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:29,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 344 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:17:29,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-20 23:17:29,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-11-20 23:17:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 96 states have (on average 1.1145833333333333) internal successors, (107), 99 states have internal predecessors, (107), 51 states have call successors, (51), 18 states have call predecessors, (51), 18 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-20 23:17:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 208 transitions. [2021-11-20 23:17:29,432 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 208 transitions. Word has length 79 [2021-11-20 23:17:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:29,433 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 208 transitions. [2021-11-20 23:17:29,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-20 23:17:29,434 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 208 transitions. [2021-11-20 23:17:29,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-20 23:17:29,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:29,436 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:29,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:29,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 23:17:29,640 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:17:29,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:29,640 INFO L85 PathProgramCache]: Analyzing trace with hash 145896886, now seen corresponding path program 1 times [2021-11-20 23:17:29,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:29,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142136321] [2021-11-20 23:17:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:29,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:29,649 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:17:29,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626175367] [2021-11-20 23:17:29,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:29,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:29,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:29,652 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:29,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 23:17:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:29,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 23:17:29,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 122 proven. 13 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-20 23:17:29,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:30,235 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 32 proven. 13 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-20 23:17:30,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:30,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142136321] [2021-11-20 23:17:30,236 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:17:30,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626175367] [2021-11-20 23:17:30,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626175367] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:30,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [277133190] [2021-11-20 23:17:30,239 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-20 23:17:30,239 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:17:30,240 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:17:30,240 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:17:30,240 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:36,070 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 13 iterations. Over-approximation may be very coarse. [2021-11-20 23:17:36,070 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 13 iterations. Over-approximation may be very coarse. [2021-11-20 23:17:37,295 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 13 iterations. Over-approximation may be very coarse. [2021-11-20 23:17:37,295 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 13 iterations. Over-approximation may be very coarse. [2021-11-20 23:17:41,275 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 14 iterations. Over-approximation may be very coarse. [2021-11-20 23:17:41,275 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 14 iterations. Over-approximation may be very coarse. [2021-11-20 23:17:44,683 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 14 iterations. Over-approximation may be very coarse. [2021-11-20 23:17:44,684 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 14 iterations. Over-approximation may be very coarse. [2021-11-20 23:17:48,370 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 9 iterations. Over-approximation may be very coarse. [2021-11-20 23:17:48,371 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 9 iterations. Over-approximation may be very coarse. [2021-11-20 23:17:49,406 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 9 iterations. Over-approximation may be very coarse. [2021-11-20 23:17:49,407 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 9 iterations. Over-approximation may be very coarse. [2021-11-20 23:17:57,781 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 10 iterations. Over-approximation may be very coarse. [2021-11-20 23:17:57,782 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 10 iterations. Over-approximation may be very coarse. [2021-11-20 23:19:12,151 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 10 iterations. Over-approximation may be very coarse. [2021-11-20 23:19:12,151 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 10 iterations. Over-approximation may be very coarse. [2021-11-20 23:20:18,571 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 17 for LOIs [2021-11-20 23:20:18,641 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 12 for LOIs [2021-11-20 23:20:18,653 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:20:26,490 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:20:26,491 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:20:26,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-11-20 23:20:26,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170481714] [2021-11-20 23:20:26,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 23:20:26,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:20:26,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:20:26,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:20:26,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:20:26,493 INFO L87 Difference]: Start difference. First operand 166 states and 208 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2021-11-20 23:20:26,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:20:26,987 INFO L93 Difference]: Finished difference Result 227 states and 289 transitions. [2021-11-20 23:20:26,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:20:26,987 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 90 [2021-11-20 23:20:26,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:20:26,989 INFO L225 Difference]: With dead ends: 227 [2021-11-20 23:20:26,989 INFO L226 Difference]: Without dead ends: 150 [2021-11-20 23:20:26,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 233 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=249, Invalid=1557, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 23:20:26,992 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 47 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:20:26,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 265 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:20:26,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-20 23:20:27,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-11-20 23:20:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 86 states have (on average 1.1046511627906976) internal successors, (95), 88 states have internal predecessors, (95), 47 states have call successors, (47), 16 states have call predecessors, (47), 16 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-20 23:20:27,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 188 transitions. [2021-11-20 23:20:27,034 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 188 transitions. Word has length 90 [2021-11-20 23:20:27,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:20:27,035 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 188 transitions. [2021-11-20 23:20:27,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2021-11-20 23:20:27,035 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 188 transitions. [2021-11-20 23:20:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-20 23:20:27,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:20:27,037 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:20:27,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 23:20:27,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 23:20:27,240 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:20:27,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:20:27,240 INFO L85 PathProgramCache]: Analyzing trace with hash 173280102, now seen corresponding path program 2 times [2021-11-20 23:20:27,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:20:27,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119691569] [2021-11-20 23:20:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:20:27,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:20:27,250 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:20:27,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446103044] [2021-11-20 23:20:27,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:20:27,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:20:27,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:20:27,254 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:20:27,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 23:20:27,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-20 23:20:27,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:20:27,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 23:20:27,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:20:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 101 proven. 10 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-11-20 23:20:27,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:20:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 41 proven. 24 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-20 23:20:27,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:20:27,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119691569] [2021-11-20 23:20:27,910 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:20:27,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446103044] [2021-11-20 23:20:27,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446103044] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:20:27,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1384954245] [2021-11-20 23:20:27,913 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-20 23:20:27,913 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:20:27,914 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:20:27,914 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:20:27,914 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:20:38,544 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2021-11-20 23:20:38,618 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 12 for LOIs [2021-11-20 23:20:38,643 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:20:43,735 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:20:43,735 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:20:43,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-11-20 23:20:43,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268868161] [2021-11-20 23:20:43,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 23:20:43,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:20:43,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:20:43,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:20:43,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 23:20:43,737 INFO L87 Difference]: Start difference. First operand 150 states and 188 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 9 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) [2021-11-20 23:20:44,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:20:44,195 INFO L93 Difference]: Finished difference Result 203 states and 251 transitions. [2021-11-20 23:20:44,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 23:20:44,195 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 9 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) Word has length 105 [2021-11-20 23:20:44,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:20:44,197 INFO L225 Difference]: With dead ends: 203 [2021-11-20 23:20:44,198 INFO L226 Difference]: Without dead ends: 145 [2021-11-20 23:20:44,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 276 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=226, Invalid=1580, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 23:20:44,200 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 21 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:20:44,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 336 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:20:44,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-20 23:20:44,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 135. [2021-11-20 23:20:44,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 80 states have internal predecessors, (82), 41 states have call successors, (41), 16 states have call predecessors, (41), 16 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-20 23:20:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 163 transitions. [2021-11-20 23:20:44,239 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 163 transitions. Word has length 105 [2021-11-20 23:20:44,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:20:44,240 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 163 transitions. [2021-11-20 23:20:44,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 9 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) [2021-11-20 23:20:44,240 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 163 transitions. [2021-11-20 23:20:44,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-20 23:20:44,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:20:44,242 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:20:44,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-20 23:20:44,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:20:44,443 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:20:44,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:20:44,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1538893617, now seen corresponding path program 2 times [2021-11-20 23:20:44,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:20:44,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813030194] [2021-11-20 23:20:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:20:44,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:20:44,453 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:20:44,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562814509] [2021-11-20 23:20:44,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:20:44,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:20:44,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:20:44,455 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:20:44,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 23:20:44,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-20 23:20:44,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:20:44,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-20 23:20:44,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:20:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 106 proven. 58 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2021-11-20 23:20:46,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:20:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 105 proven. 54 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2021-11-20 23:20:55,326 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:20:55,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813030194] [2021-11-20 23:20:55,327 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:20:55,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562814509] [2021-11-20 23:20:55,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562814509] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:20:55,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [961135520] [2021-11-20 23:20:55,330 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-20 23:20:55,330 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:20:55,331 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:20:55,331 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:20:55,331 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:21:02,019 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 13 iterations. Over-approximation may be very coarse. [2021-11-20 23:21:02,019 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 13 iterations. Over-approximation may be very coarse. [2021-11-20 23:21:03,502 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 13 iterations. Over-approximation may be very coarse. [2021-11-20 23:21:03,503 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 13 iterations. Over-approximation may be very coarse. [2021-11-20 23:21:08,513 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 14 iterations. Over-approximation may be very coarse. [2021-11-20 23:21:08,514 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 14 iterations. Over-approximation may be very coarse. [2021-11-20 23:21:12,090 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 14 iterations. Over-approximation may be very coarse. [2021-11-20 23:21:12,091 WARN L221 IntervalDomain]: Interval conversion did not stabilize in 14 iterations. Over-approximation may be very coarse. [2021-11-20 23:21:24,262 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 17 for LOIs [2021-11-20 23:21:24,336 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 12 for LOIs [2021-11-20 23:21:24,348 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:21:32,976 WARN L227 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 113 DAG size of output: 96 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:21:42,374 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:21:42,374 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:21:42,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 30 [2021-11-20 23:21:42,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362182042] [2021-11-20 23:21:42,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 23:21:42,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-20 23:21:42,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:21:42,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-20 23:21:42,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=2318, Unknown=3, NotChecked=0, Total=2652 [2021-11-20 23:21:42,378 INFO L87 Difference]: Start difference. First operand 135 states and 163 transitions. Second operand has 30 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 17 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (43), 13 states have call predecessors, (43), 15 states have call successors, (43) [2021-11-20 23:21:47,696 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse12 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse13 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|))) (let ((.cse8 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|)) (.cse9 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse14 (+ .cse12 .cse13)) (.cse6 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~s~0#1|)) (.cse7 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|))) (let ((.cse10 (+ .cse6 .cse7)) (.cse5 (* |c_ULTIMATE.start_main_~c~0#1| (- 1))) (.cse2 (* 2 |c_ULTIMATE.start_main_~b~0#1|)) (.cse4 (not (= |c_ULTIMATE.start_main_~b~0#1| .cse14))) (.cse1 (+ .cse8 .cse9))) (and (let ((.cse3 (+ (* |c_ULTIMATE.start_main_~b~0#1| 2) .cse5 |c_ULTIMATE.start_main_~a~0#1|))) (let ((.cse0 (div .cse3 |c_ULTIMATE.start_main_~b~0#1|))) (or (<= (* 3 |c_ULTIMATE.start_main_~b~0#1|) |c_ULTIMATE.start_main_~c~0#1|) (= (+ (* .cse0 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| .cse0 |c_ULTIMATE.start_main_~s~0#1|)) .cse1) (not (= .cse2 |c_ULTIMATE.start_main_~c~0#1|)) (not (= (mod .cse3 |c_ULTIMATE.start_main_~b~0#1|) 0)) .cse4 (< .cse0 (+ 2 |c_ULTIMATE.start_main_~k~0#1|))))) (<= |c_ULTIMATE.start_main_~y~0#1| 2) (<= 0 |c_ULTIMATE.start_main_~y~0#1|) (or (not (= (+ (* 2 .cse6) |c_ULTIMATE.start_main_~b~0#1| (* 2 .cse7)) (+ (* 2 .cse8) (* 2 .cse9)))) (<= .cse1 .cse10) (not (= .cse1 (+ |c_ULTIMATE.start_main_~c~0#1| .cse6 .cse7))) (let ((.cse11 (div (+ (* 2 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* (- 2) |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* (- 2) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~s~0#1|)) (+ (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~s~0#1|) (* (- 1) |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|) .cse8 .cse9)))) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| .cse11 |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| .cse11 |c_ULTIMATE.start_main_~p~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| .cse11 |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~s~0#1|) .cse12 .cse13 (* |c_ULTIMATE.start_main_~x~0#1| .cse11 |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|))))) (or (not (= |c_ULTIMATE.start_main_~b~0#1| 0)) (= 0 .cse14)) (or (= .cse10 .cse1) (<= |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~c~0#1|) (not (= |c_ULTIMATE.start_main_~c~0#1| 0))) (let ((.cse15 (+ .cse5 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~b~0#1|))) (let ((.cse16 (div .cse15 |c_ULTIMATE.start_main_~b~0#1|))) (or (not (= (mod .cse15 |c_ULTIMATE.start_main_~b~0#1|) 0)) (<= .cse2 |c_ULTIMATE.start_main_~c~0#1|) (< .cse16 (+ |c_ULTIMATE.start_main_~k~0#1| 1)) (not (= |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~c~0#1|)) (= (+ (* .cse16 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| .cse16 |c_ULTIMATE.start_main_~s~0#1|)) .cse1) .cse4))) (or (not (= .cse2 |c_ULTIMATE.start_main_~a~0#1|)) (<= |c_ULTIMATE.start_main_~b~0#1| 0) .cse4 (= .cse1 (let ((.cse17 (div |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~b~0#1|))) (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1| .cse17) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1| .cse17))))))))) is different from true [2021-11-20 23:21:53,075 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse6 (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|)))) (let ((.cse5 (* |c_ULTIMATE.start_main_~c~0#1| (- 1))) (.cse2 (* 2 |c_ULTIMATE.start_main_~b~0#1|)) (.cse4 (not (= |c_ULTIMATE.start_main_~b~0#1| .cse6))) (.cse1 (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|)))) (and (let ((.cse3 (+ (* |c_ULTIMATE.start_main_~b~0#1| 2) .cse5 |c_ULTIMATE.start_main_~a~0#1|))) (let ((.cse0 (div .cse3 |c_ULTIMATE.start_main_~b~0#1|))) (or (<= (* 3 |c_ULTIMATE.start_main_~b~0#1|) |c_ULTIMATE.start_main_~c~0#1|) (= (+ (* .cse0 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| .cse0 |c_ULTIMATE.start_main_~s~0#1|)) .cse1) (not (= .cse2 |c_ULTIMATE.start_main_~c~0#1|)) (not (= (mod .cse3 |c_ULTIMATE.start_main_~b~0#1|) 0)) .cse4 (< .cse0 (+ 2 |c_ULTIMATE.start_main_~k~0#1|))))) (or (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~s~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|)) .cse1) (not (= (+ (* |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~b~0#1|) |c_ULTIMATE.start_main_~c~0#1|) |c_ULTIMATE.start_main_~a~0#1|)) (<= |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~c~0#1|) .cse4 (not (= |c_ULTIMATE.start_main_~c~0#1| 0))) (or (not (= |c_ULTIMATE.start_main_~b~0#1| 0)) (= 0 .cse6)) (let ((.cse7 (+ .cse5 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~b~0#1|))) (let ((.cse8 (div .cse7 |c_ULTIMATE.start_main_~b~0#1|))) (or (not (= (mod .cse7 |c_ULTIMATE.start_main_~b~0#1|) 0)) (<= .cse2 |c_ULTIMATE.start_main_~c~0#1|) (< .cse8 (+ |c_ULTIMATE.start_main_~k~0#1| 1)) (not (= |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~c~0#1|)) (= (+ (* .cse8 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| .cse8 |c_ULTIMATE.start_main_~s~0#1|)) .cse1) .cse4))) (or (not (= .cse2 |c_ULTIMATE.start_main_~a~0#1|)) (<= |c_ULTIMATE.start_main_~b~0#1| 0) .cse4 (= .cse1 (let ((.cse9 (div |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~b~0#1|))) (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1| .cse9) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1| .cse9)))))))) is different from true [2021-11-20 23:21:55,112 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (* 2 |c_ULTIMATE.start_main_~b~0#1|)) (.cse1 (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|))) (.cse4 (not (= |c_ULTIMATE.start_main_~b~0#1| (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|))))) (.cse5 (* |c_ULTIMATE.start_main_~c~0#1| (- 1)))) (and (let ((.cse3 (+ (* |c_ULTIMATE.start_main_~b~0#1| 2) .cse5 |c_ULTIMATE.start_main_~a~0#1|))) (let ((.cse0 (div .cse3 |c_ULTIMATE.start_main_~b~0#1|))) (or (<= (* 3 |c_ULTIMATE.start_main_~b~0#1|) |c_ULTIMATE.start_main_~c~0#1|) (= (+ (* .cse0 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| .cse0 |c_ULTIMATE.start_main_~s~0#1|)) .cse1) (not (= .cse2 |c_ULTIMATE.start_main_~c~0#1|)) (not (= (mod .cse3 |c_ULTIMATE.start_main_~b~0#1|) 0)) .cse4 (< .cse0 (+ 2 |c_ULTIMATE.start_main_~k~0#1|))))) (let ((.cse6 (+ .cse5 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~b~0#1|))) (let ((.cse7 (div .cse6 |c_ULTIMATE.start_main_~b~0#1|))) (or (not (= (mod .cse6 |c_ULTIMATE.start_main_~b~0#1|) 0)) (<= .cse2 |c_ULTIMATE.start_main_~c~0#1|) (< .cse7 (+ |c_ULTIMATE.start_main_~k~0#1| 1)) (not (= |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~c~0#1|)) (= (+ (* .cse7 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| .cse7 |c_ULTIMATE.start_main_~s~0#1|)) .cse1) .cse4))))) is different from true [2021-11-20 23:21:57,136 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|))) (.cse1 (not (= |c_ULTIMATE.start_main_~b~0#1| (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|)))))) (and (or (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~s~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|)) .cse0) (not (= (+ (* |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~b~0#1|) |c_ULTIMATE.start_main_~c~0#1|) |c_ULTIMATE.start_main_~a~0#1|)) (<= |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~c~0#1|) .cse1 (not (= |c_ULTIMATE.start_main_~c~0#1| 0))) (let ((.cse2 (+ (* |c_ULTIMATE.start_main_~c~0#1| (- 1)) |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~b~0#1|))) (let ((.cse3 (div .cse2 |c_ULTIMATE.start_main_~b~0#1|))) (or (not (= (mod .cse2 |c_ULTIMATE.start_main_~b~0#1|) 0)) (<= (* 2 |c_ULTIMATE.start_main_~b~0#1|) |c_ULTIMATE.start_main_~c~0#1|) (< .cse3 (+ |c_ULTIMATE.start_main_~k~0#1| 1)) (not (= |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~c~0#1|)) (= (+ (* .cse3 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| .cse3 |c_ULTIMATE.start_main_~s~0#1|)) .cse0) .cse1))))) is different from true [2021-11-20 23:22:07,646 WARN L227 SmtUtils]: Spent 6.89s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:22:09,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-20 23:22:11,724 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse7 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|)) (.cse8 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse6 (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|)))) (let ((.cse5 (* |c_ULTIMATE.start_main_~c~0#1| (- 1))) (.cse2 (* 2 |c_ULTIMATE.start_main_~b~0#1|)) (.cse4 (not (= |c_ULTIMATE.start_main_~b~0#1| .cse6))) (.cse1 (+ .cse7 .cse8))) (and (let ((.cse3 (+ (* |c_ULTIMATE.start_main_~b~0#1| 2) .cse5 |c_ULTIMATE.start_main_~a~0#1|))) (let ((.cse0 (div .cse3 |c_ULTIMATE.start_main_~b~0#1|))) (or (<= (* 3 |c_ULTIMATE.start_main_~b~0#1|) |c_ULTIMATE.start_main_~c~0#1|) (= (+ (* .cse0 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| .cse0 |c_ULTIMATE.start_main_~s~0#1|)) .cse1) (not (= .cse2 |c_ULTIMATE.start_main_~c~0#1|)) (not (= (mod .cse3 |c_ULTIMATE.start_main_~b~0#1|) 0)) .cse4 (< .cse0 (+ 2 |c_ULTIMATE.start_main_~k~0#1|))))) (or (not (= |c_ULTIMATE.start_main_~b~0#1| 0)) (= 0 .cse6)) (or (not (= |c_ULTIMATE.start_main_~a~0#1| .cse1)) (<= .cse1 0) (not (= |c_ULTIMATE.start_main_~b~0#1| (+ (* 2 .cse7) (* 2 .cse8)))) (= (let ((.cse9 (div (+ (* 2 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|)) .cse1))) (+ (* |c_ULTIMATE.start_main_~y~0#1| .cse9 |c_ULTIMATE.start_main_~r~0#1|) (* .cse9 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|))) .cse6)) (or (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~s~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|)) .cse1) (<= |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~c~0#1|) (not (= |c_ULTIMATE.start_main_~c~0#1| 0))) (let ((.cse10 (+ .cse5 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~b~0#1|))) (let ((.cse11 (div .cse10 |c_ULTIMATE.start_main_~b~0#1|))) (or (not (= (mod .cse10 |c_ULTIMATE.start_main_~b~0#1|) 0)) (<= .cse2 |c_ULTIMATE.start_main_~c~0#1|) (< .cse11 (+ |c_ULTIMATE.start_main_~k~0#1| 1)) (not (= |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~c~0#1|)) (= (+ (* .cse11 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| .cse11 |c_ULTIMATE.start_main_~s~0#1|)) .cse1) .cse4))) (or (not (= .cse2 |c_ULTIMATE.start_main_~a~0#1|)) (<= |c_ULTIMATE.start_main_~b~0#1| 0) .cse4 (= .cse1 (let ((.cse12 (div |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~b~0#1|))) (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1| .cse12) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1| .cse12)))))))) is different from true [2021-11-20 23:22:13,741 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (* 2 |c_ULTIMATE.start_main_~b~0#1|)) (.cse1 (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|))) (.cse4 (not (= |c_ULTIMATE.start_main_~b~0#1| (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|))))) (.cse5 (* |c_ULTIMATE.start_main_~c~0#1| (- 1)))) (and (let ((.cse3 (+ (* |c_ULTIMATE.start_main_~b~0#1| 2) .cse5 |c_ULTIMATE.start_main_~a~0#1|))) (let ((.cse0 (div .cse3 |c_ULTIMATE.start_main_~b~0#1|))) (or (<= (* 3 |c_ULTIMATE.start_main_~b~0#1|) |c_ULTIMATE.start_main_~c~0#1|) (= (+ (* .cse0 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| .cse0 |c_ULTIMATE.start_main_~s~0#1|)) .cse1) (not (= .cse2 |c_ULTIMATE.start_main_~c~0#1|)) (not (= (mod .cse3 |c_ULTIMATE.start_main_~b~0#1|) 0)) .cse4 (< .cse0 (+ 2 |c_ULTIMATE.start_main_~k~0#1|))))) (or (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~s~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|)) .cse1) (<= |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~c~0#1|) (not (= |c_ULTIMATE.start_main_~c~0#1| 0))) (let ((.cse6 (+ .cse5 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~b~0#1|))) (let ((.cse7 (div .cse6 |c_ULTIMATE.start_main_~b~0#1|))) (or (not (= (mod .cse6 |c_ULTIMATE.start_main_~b~0#1|) 0)) (<= .cse2 |c_ULTIMATE.start_main_~c~0#1|) (< .cse7 (+ |c_ULTIMATE.start_main_~k~0#1| 1)) (not (= |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~c~0#1|)) (= (+ (* .cse7 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| .cse7 |c_ULTIMATE.start_main_~s~0#1|)) .cse1) .cse4))))) is different from true [2021-11-20 23:22:23,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-20 23:22:24,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:22:24,727 INFO L93 Difference]: Finished difference Result 226 states and 279 transitions. [2021-11-20 23:22:24,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 23:22:24,728 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 17 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (43), 13 states have call predecessors, (43), 15 states have call successors, (43) Word has length 121 [2021-11-20 23:22:24,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:22:24,730 INFO L225 Difference]: With dead ends: 226 [2021-11-20 23:22:24,730 INFO L226 Difference]: Without dead ends: 173 [2021-11-20 23:22:24,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 305 SyntacticMatches, 6 SemanticMatches, 72 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 58.1s TimeCoverageRelationStatistics Valid=634, Invalid=3934, Unknown=12, NotChecked=822, Total=5402 [2021-11-20 23:22:24,734 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 111 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 313 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:22:24,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 450 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 725 Invalid, 2 Unknown, 24 Unchecked, 9.5s Time] [2021-11-20 23:22:24,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-20 23:22:24,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 165. [2021-11-20 23:22:24,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 93 states have (on average 1.053763440860215) internal successors, (98), 94 states have internal predecessors, (98), 52 states have call successors, (52), 19 states have call predecessors, (52), 19 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-20 23:22:24,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 202 transitions. [2021-11-20 23:22:24,792 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 202 transitions. Word has length 121 [2021-11-20 23:22:24,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:22:24,793 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 202 transitions. [2021-11-20 23:22:24,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 17 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (43), 13 states have call predecessors, (43), 15 states have call successors, (43) [2021-11-20 23:22:24,794 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 202 transitions. [2021-11-20 23:22:24,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-20 23:22:24,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:22:24,796 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 18, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:22:24,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 23:22:25,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:22:25,012 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:22:25,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:22:25,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1186822259, now seen corresponding path program 3 times [2021-11-20 23:22:25,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:22:25,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517946113] [2021-11-20 23:22:25,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:22:25,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:22:25,024 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:22:25,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133203842] [2021-11-20 23:22:25,025 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:22:25,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:22:25,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:22:25,026 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:22:25,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 23:22:25,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:22:25,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:22:25,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 23:22:25,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:22:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 178 proven. 41 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-11-20 23:22:25,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:22:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 54 proven. 41 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-11-20 23:22:25,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:22:25,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517946113] [2021-11-20 23:22:25,775 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:22:25,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133203842] [2021-11-20 23:22:25,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133203842] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:22:25,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [63377824] [2021-11-20 23:22:25,778 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-20 23:22:25,778 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:22:25,779 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:22:25,779 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:22:25,779 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:23:02,448 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2021-11-20 23:23:02,519 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 12 for LOIs [2021-11-20 23:23:02,532 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:23:07,162 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:23:07,162 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:23:07,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-11-20 23:23:07,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469141419] [2021-11-20 23:23:07,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 23:23:07,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:23:07,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:23:07,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:23:07,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 23:23:07,165 INFO L87 Difference]: Start difference. First operand 165 states and 202 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 12 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 11 states have call predecessors, (42), 12 states have call successors, (42) [2021-11-20 23:23:07,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:23:07,601 INFO L93 Difference]: Finished difference Result 208 states and 253 transitions. [2021-11-20 23:23:07,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:23:07,601 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 12 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 11 states have call predecessors, (42), 12 states have call successors, (42) Word has length 129 [2021-11-20 23:23:07,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:23:07,603 INFO L225 Difference]: With dead ends: 208 [2021-11-20 23:23:07,603 INFO L226 Difference]: Without dead ends: 129 [2021-11-20 23:23:07,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 349 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=207, Invalid=1515, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 23:23:07,605 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 34 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:23:07,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 348 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:23:07,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-20 23:23:07,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-20 23:23:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-11-20 23:23:07,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2021-11-20 23:23:07,665 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 129 [2021-11-20 23:23:07,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:23:07,666 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2021-11-20 23:23:07,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 12 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 11 states have call predecessors, (42), 12 states have call successors, (42) [2021-11-20 23:23:07,666 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2021-11-20 23:23:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-20 23:23:07,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:23:07,669 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:23:07,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 23:23:07,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 23:23:07,884 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:23:07,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:23:07,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1201369252, now seen corresponding path program 4 times [2021-11-20 23:23:07,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:23:07,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603627477] [2021-11-20 23:23:07,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:23:07,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:23:07,893 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:23:07,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553850420] [2021-11-20 23:23:07,903 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 23:23:07,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:23:07,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:23:07,904 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:23:07,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 23:23:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:23:07,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 23:23:07,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:23:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 147 proven. 60 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2021-11-20 23:23:08,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:23:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 63 proven. 66 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2021-11-20 23:23:08,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:23:08,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603627477] [2021-11-20 23:23:08,768 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:23:08,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553850420] [2021-11-20 23:23:08,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553850420] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:23:08,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [56081954] [2021-11-20 23:23:08,771 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-20 23:23:08,771 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:23:08,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:23:08,771 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:23:08,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:23:20,485 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2021-11-20 23:23:20,551 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 12 for LOIs [2021-11-20 23:23:20,565 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:23:24,808 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:23:24,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:23:24,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-11-20 23:23:24,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593789914] [2021-11-20 23:23:24,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 23:23:24,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:23:24,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:23:24,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:23:24,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 23:23:24,811 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 12 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) [2021-11-20 23:23:25,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:23:25,486 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2021-11-20 23:23:25,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:23:25,487 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 12 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) Word has length 149 [2021-11-20 23:23:25,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:23:25,488 INFO L225 Difference]: With dead ends: 137 [2021-11-20 23:23:25,488 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 23:23:25,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 408 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=215, Invalid=1507, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 23:23:25,490 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 15 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:23:25,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 442 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:23:25,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 23:23:25,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 23:23:25,492 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) [2021-11-20 23:23:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 23:23:25,492 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 149 [2021-11-20 23:23:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:23:25,493 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 23:23:25,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 12 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) [2021-11-20 23:23:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 23:23:25,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 23:23:25,496 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:23:25,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-20 23:23:25,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 23:23:25,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 23:23:48,728 INFO L854 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse38 (select |#memory_int| 1))) (let ((.cse16 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse22 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse26 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= 11 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse12 (= (select |#valid| 1) 1)) (.cse29 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse13 (= (select |#valid| 0) 0)) (.cse14 (= (select |#valid| 2) 1)) (.cse17 (= (select .cse38 0) 48)) (.cse20 (= (select .cse38 1) 0)) (.cse23 (< 0 |#StackHeapBarrier|)) (.cse33 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse34 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse32 (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|))) (let ((.cse6 (<= .cse32 2)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| (+ .cse33 .cse34))) (.cse27 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse28 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse30 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse11 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse25 (let ((.cse35 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse36 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse37 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~xy~0#1|))) (or (and .cse0 .cse35 .cse36 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 .cse37 .cse5 .cse12 .cse13 .cse14 .cse16 .cse17 .cse20 .cse22 .cse23) (and .cse0 .cse35 .cse26 .cse36 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse37 .cse5 .cse12 .cse29 .cse13 .cse14 .cse17 .cse20 .cse23)))) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse33 .cse34) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|)))) (.cse8 (<= 0 |ULTIMATE.start_main_~c~0#1|)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse10 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse15 (= |#NULL.offset| 0)) (.cse18 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse19 (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|)) (.cse21 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse31 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse24 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24) (and .cse9 .cse10 .cse11 (<= 1 |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~yy~0#1| 4) .cse15 .cse18 .cse19 .cse21 .cse24 .cse25) (and .cse0 .cse26 .cse2 .cse3 .cse4 .cse5 .cse7 .cse27 .cse28 .cse11 .cse12 .cse29 .cse13 .cse30 .cse14 .cse15 (= .cse31 |ULTIMATE.start_main_~a~0#1|) .cse17 (<= .cse31 2) .cse19 .cse20 .cse21 .cse23 .cse24) (and .cse0 .cse26 .cse2 .cse3 .cse4 (= .cse32 |ULTIMATE.start_main_~a~0#1|) .cse5 .cse6 .cse7 .cse27 .cse28 .cse11 .cse12 .cse29 .cse13 .cse30 .cse14 .cse15 .cse17 .cse19 .cse20 .cse21 .cse23 .cse24) (and (<= 1 |ULTIMATE.start_main_~q~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 1) (<= |ULTIMATE.start_main_~s~0#1| 0) (<= 0 |ULTIMATE.start_main_~s~0#1|) .cse11 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse15 .cse19 .cse21 (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) .cse24 .cse25) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse8 .cse9 (= (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse10 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 (= .cse31 |ULTIMATE.start_main_~x~0#1|) .cse24))))) [2021-11-20 23:23:48,728 INFO L854 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse32 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse38 (select |#memory_int| 1))) (let ((.cse16 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse22 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse26 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= 11 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse12 (= (select |#valid| 1) 1)) (.cse29 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse13 (= (select |#valid| 0) 0)) (.cse14 (= (select |#valid| 2) 1)) (.cse17 (= (select .cse38 0) 48)) (.cse20 (= (select .cse38 1) 0)) (.cse23 (< 0 |#StackHeapBarrier|)) (.cse33 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse34 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse31 (+ .cse32 |ULTIMATE.start_main_~c~0#1|))) (let ((.cse6 (<= .cse31 2)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| (+ .cse33 .cse34))) (.cse27 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse28 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse11 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse25 (let ((.cse35 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse36 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse37 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~xy~0#1|))) (or (and .cse0 .cse35 .cse36 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 .cse37 .cse5 .cse12 .cse13 .cse14 .cse16 .cse17 .cse20 .cse22 .cse23) (and .cse0 .cse35 .cse26 .cse36 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse37 .cse5 .cse12 .cse29 .cse13 .cse14 .cse17 .cse20 .cse23)))) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse33 .cse34) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|)))) (.cse8 (<= 0 |ULTIMATE.start_main_~c~0#1|)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse10 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse15 (= |#NULL.offset| 0)) (.cse18 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse19 (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|)) (.cse21 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse30 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse24 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24) (and .cse9 .cse10 .cse11 (<= 1 |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~yy~0#1| 4) .cse15 .cse18 .cse19 .cse21 .cse24 .cse25) (and .cse0 .cse26 .cse2 .cse3 .cse4 .cse5 .cse7 .cse27 .cse28 .cse11 .cse12 .cse29 .cse13 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) .cse14 .cse15 (= .cse30 |ULTIMATE.start_main_~a~0#1|) .cse17 (<= .cse30 2) .cse19 .cse20 .cse21 .cse23 .cse24) (and .cse0 .cse2 .cse3 .cse4 (= .cse31 |ULTIMATE.start_main_~a~0#1|) .cse5 .cse6 .cse7 .cse27 .cse28 .cse11 .cse12 .cse29 (= .cse31 |ULTIMATE.start_main_~y~0#1|) .cse13 .cse14 .cse15 .cse17 (<= .cse32 |ULTIMATE.start_main_~y~0#1|) .cse19 .cse20 .cse21 .cse23 .cse24) (and (<= 1 |ULTIMATE.start_main_~q~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 1) (<= |ULTIMATE.start_main_~s~0#1| 0) (<= 0 |ULTIMATE.start_main_~s~0#1|) .cse11 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse15 .cse19 .cse21 (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) .cse24 .cse25) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse8 .cse9 (= (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse10 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 (= .cse30 |ULTIMATE.start_main_~x~0#1|) .cse24))))) [2021-11-20 23:23:48,728 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 23:23:48,728 INFO L854 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-20 23:23:48,729 INFO L854 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-20 23:23:48,729 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse32 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse38 (select |#memory_int| 1))) (let ((.cse16 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse22 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse26 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= 11 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse12 (= (select |#valid| 1) 1)) (.cse29 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse13 (= (select |#valid| 0) 0)) (.cse14 (= (select |#valid| 2) 1)) (.cse17 (= (select .cse38 0) 48)) (.cse20 (= (select .cse38 1) 0)) (.cse23 (< 0 |#StackHeapBarrier|)) (.cse33 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse34 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse31 (+ .cse32 |ULTIMATE.start_main_~c~0#1|))) (let ((.cse6 (<= .cse31 2)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| (+ .cse33 .cse34))) (.cse27 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse28 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse11 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse25 (let ((.cse35 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse36 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse37 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~xy~0#1|))) (or (and .cse0 .cse35 .cse36 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 .cse37 .cse5 .cse12 .cse13 .cse14 .cse16 .cse17 .cse20 .cse22 .cse23) (and .cse0 .cse35 .cse26 .cse36 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse37 .cse5 .cse12 .cse29 .cse13 .cse14 .cse17 .cse20 .cse23)))) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse33 .cse34) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|)))) (.cse8 (<= 0 |ULTIMATE.start_main_~c~0#1|)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse10 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse15 (= |#NULL.offset| 0)) (.cse18 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse19 (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|)) (.cse21 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse30 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse24 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24) (and .cse9 .cse10 .cse11 (<= 1 |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~yy~0#1| 4) .cse15 .cse18 .cse19 .cse21 .cse24 .cse25) (and .cse0 .cse26 .cse2 .cse3 .cse4 .cse5 .cse7 .cse27 .cse28 .cse11 .cse12 .cse29 .cse13 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) .cse14 .cse15 (= .cse30 |ULTIMATE.start_main_~a~0#1|) .cse17 (<= .cse30 2) .cse19 .cse20 .cse21 .cse23 .cse24) (and .cse0 .cse2 .cse3 .cse4 (= .cse31 |ULTIMATE.start_main_~a~0#1|) .cse5 .cse6 .cse7 .cse27 .cse28 .cse11 .cse12 .cse29 (= .cse31 |ULTIMATE.start_main_~y~0#1|) .cse13 .cse14 .cse15 .cse17 (<= .cse32 |ULTIMATE.start_main_~y~0#1|) .cse19 .cse20 .cse21 .cse23 .cse24) (and (<= 1 |ULTIMATE.start_main_~q~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 1) (<= |ULTIMATE.start_main_~s~0#1| 0) (<= 0 |ULTIMATE.start_main_~s~0#1|) .cse11 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse15 .cse19 .cse21 (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) .cse24 .cse25) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse8 .cse9 (= (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse10 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 (= .cse30 |ULTIMATE.start_main_~x~0#1|) .cse24))))) [2021-11-20 23:23:48,729 INFO L854 garLoopResultBuilder]: At program point L41-1(lines 39 68) the Hoare annotation is: (let ((.cse22 (select |#memory_int| 1)) (.cse17 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse18 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) (let ((.cse4 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~xy~0#1|)) (.cse6 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse1 (= (select |#length| 3) 12)) (.cse16 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse19 (+ .cse17 .cse18)) (.cse2 (= 11 (select |#length| 2))) (.cse3 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse0 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse20 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= (select |#valid| 1) 1)) (.cse8 (= (select |#valid| 0) 0)) (.cse9 (= (select |#valid| 2) 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= (select .cse22 0) 48)) (.cse21 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse12 (= (select .cse22 1) 0)) (.cse13 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse14 (< 0 |#StackHeapBarrier|)) (.cse15 (= |#NULL.base| 0))) (or (and (< |ULTIMATE.start_main_~c~0#1| .cse0) .cse1 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 2) .cse2 .cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse4 .cse5 (= |ULTIMATE.start_main_~q~0#1| 1) .cse6 (= |ULTIMATE.start_main_~s~0#1| 0) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse7 (= |ULTIMATE.start_main_~r~0#1| 1) .cse8 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) .cse9 .cse10 .cse11 .cse12 .cse13 (= (+ |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~temp~0#1|) .cse14 .cse15) (and (= |ULTIMATE.start_main_~c~0#1| 0) .cse1 .cse16 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse17 .cse18) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|))) .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~b~0#1| .cse19) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse6 .cse20 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse11 (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2) .cse21 .cse12 .cse13 (= |ULTIMATE.start_main_~s~0#1| 1) .cse14 .cse15) (and (<= 0 |ULTIMATE.start_main_~b~0#1|) .cse1 (<= |ULTIMATE.start_main_~y~0#1| 2) .cse16 (= 0 .cse19) .cse2 .cse3 .cse5 (< .cse0 2) (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse20 .cse7 .cse8 .cse9 .cse10 .cse11 (< (* 2 |ULTIMATE.start_main_~c~0#1|) 2) .cse21 .cse12 .cse13 .cse14 .cse15)))) [2021-11-20 23:23:48,729 INFO L854 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) (.cse2 (select |#memory_int| 1)) (.cse1 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 0 .cse0) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (= .cse1 .cse0) (not (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse2 0) 48) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse2 1) 0) (= |ULTIMATE.start_main_~a~0#1| .cse1) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-20 23:23:48,729 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 23:23:48,730 INFO L854 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-20 23:23:48,730 INFO L854 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse38 (select |#memory_int| 1)) (.cse32 (* 2 |ULTIMATE.start_main_~b~0#1|))) (let ((.cse33 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse34 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse31 (+ .cse32 |ULTIMATE.start_main_~c~0#1|)) (.cse16 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse22 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse26 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= 11 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse12 (= (select |#valid| 1) 1)) (.cse29 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse13 (= (select |#valid| 0) 0)) (.cse14 (= (select |#valid| 2) 1)) (.cse17 (= (select .cse38 0) 48)) (.cse20 (= (select .cse38 1) 0)) (.cse23 (< 0 |#StackHeapBarrier|))) (let ((.cse25 (let ((.cse35 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse36 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse37 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~xy~0#1|))) (or (and .cse0 .cse35 .cse36 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 .cse37 .cse5 .cse12 .cse13 .cse14 .cse16 .cse17 .cse20 .cse22 .cse23) (and .cse0 .cse35 .cse26 .cse36 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse37 .cse5 .cse12 .cse29 .cse13 .cse14 .cse17 .cse20 .cse23)))) (.cse6 (<= .cse31 2)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| (+ .cse33 .cse34))) (.cse27 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse28 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse11 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse33 .cse34) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|)))) (.cse8 (<= 0 |ULTIMATE.start_main_~c~0#1|)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse10 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse15 (= |#NULL.offset| 0)) (.cse18 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse19 (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|)) (.cse21 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse30 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse24 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24) (and .cse9 .cse10 .cse11 (<= 1 |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~yy~0#1| 4) .cse15 .cse18 .cse19 .cse21 .cse24 .cse25) (and .cse0 .cse26 .cse2 .cse3 .cse4 .cse5 .cse7 .cse27 .cse28 .cse11 .cse12 .cse29 .cse13 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) .cse14 .cse15 (= .cse30 |ULTIMATE.start_main_~a~0#1|) .cse17 (<= .cse30 2) .cse19 .cse20 .cse21 .cse23 .cse24) (and (<= |ULTIMATE.start_main_~s~0#1| 0) (<= 0 |ULTIMATE.start_main_~s~0#1|) .cse27 .cse11 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse15 .cse19 .cse21 (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) .cse24 .cse25) (and .cse0 .cse2 .cse3 .cse4 (= .cse31 |ULTIMATE.start_main_~a~0#1|) .cse5 .cse6 .cse7 .cse27 .cse28 .cse11 .cse12 .cse29 (= .cse31 |ULTIMATE.start_main_~y~0#1|) .cse13 .cse14 .cse15 .cse17 (<= .cse32 |ULTIMATE.start_main_~y~0#1|) .cse19 .cse20 .cse21 .cse23 .cse24) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse8 .cse9 (= (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse10 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 (= .cse30 |ULTIMATE.start_main_~x~0#1|) .cse24))))) [2021-11-20 23:23:48,730 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2021-11-20 23:23:48,730 INFO L854 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 0 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse0 1) 0) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-20 23:23:48,731 INFO L854 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse2 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= (select |#length| 3) 12) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse0 .cse1) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|))) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~xy~0#1|) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~b~0#1| (+ .cse0 .cse1)) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (select .cse2 0) 48) (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse2 1) 0) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (= |ULTIMATE.start_main_~s~0#1| 1) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-20 23:23:48,731 INFO L854 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse2 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= (select |#length| 3) 12) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse0 .cse1) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|))) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~xy~0#1|) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~b~0#1| (+ .cse0 .cse1)) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (select .cse2 0) 48) (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse2 1) 0) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (= |ULTIMATE.start_main_~s~0#1| 1) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-20 23:23:48,731 INFO L858 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-11-20 23:23:48,731 INFO L854 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-20 23:23:48,731 INFO L858 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-11-20 23:23:48,732 INFO L858 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2021-11-20 23:23:48,732 INFO L854 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse38 (select |#memory_int| 1))) (let ((.cse16 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse22 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse26 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= 11 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse12 (= (select |#valid| 1) 1)) (.cse29 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse13 (= (select |#valid| 0) 0)) (.cse14 (= (select |#valid| 2) 1)) (.cse17 (= (select .cse38 0) 48)) (.cse20 (= (select .cse38 1) 0)) (.cse23 (< 0 |#StackHeapBarrier|)) (.cse33 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse34 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse32 (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|))) (let ((.cse6 (<= .cse32 2)) (.cse7 (= |ULTIMATE.start_main_~b~0#1| (+ .cse33 .cse34))) (.cse27 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse28 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse30 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse11 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse25 (let ((.cse35 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse36 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse37 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~xy~0#1|))) (or (and .cse0 .cse35 .cse36 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 .cse37 .cse5 .cse12 .cse13 .cse14 .cse16 .cse17 .cse20 .cse22 .cse23) (and .cse0 .cse35 .cse26 .cse36 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse37 .cse5 .cse12 .cse29 .cse13 .cse14 .cse17 .cse20 .cse23)))) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse33 .cse34) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|)))) (.cse8 (<= 0 |ULTIMATE.start_main_~c~0#1|)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse10 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse15 (= |#NULL.offset| 0)) (.cse18 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse19 (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|)) (.cse21 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse31 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse24 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24) (and .cse9 .cse10 .cse11 (<= 1 |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~yy~0#1| 4) .cse15 .cse18 .cse19 .cse21 .cse24 .cse25) (and .cse0 .cse26 .cse2 .cse3 .cse4 .cse5 .cse7 .cse27 .cse28 .cse11 .cse12 .cse29 .cse13 .cse30 .cse14 .cse15 (= .cse31 |ULTIMATE.start_main_~a~0#1|) .cse17 (<= .cse31 2) .cse19 .cse20 .cse21 .cse23 .cse24) (and .cse0 .cse26 .cse2 .cse3 .cse4 (= .cse32 |ULTIMATE.start_main_~a~0#1|) .cse5 .cse6 .cse7 .cse27 .cse28 .cse11 .cse12 .cse29 .cse13 .cse30 .cse14 .cse15 .cse17 .cse19 .cse20 .cse21 .cse23 .cse24) (and (<= 1 |ULTIMATE.start_main_~q~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 1) (<= |ULTIMATE.start_main_~s~0#1| 0) (<= 0 |ULTIMATE.start_main_~s~0#1|) .cse11 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse15 .cse19 .cse21 (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) .cse24 .cse25) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse8 .cse9 (= (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse10 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 (= .cse31 |ULTIMATE.start_main_~x~0#1|) .cse24))))) [2021-11-20 23:23:48,732 INFO L858 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2021-11-20 23:23:48,733 INFO L861 garLoopResultBuilder]: At program point L72(line 72) the Hoare annotation is: true [2021-11-20 23:23:48,733 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2021-11-20 23:23:48,733 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2021-11-20 23:23:48,733 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2021-11-20 23:23:48,733 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-11-20 23:23:48,733 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-11-20 23:23:48,734 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2021-11-20 23:23:48,734 INFO L858 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2021-11-20 23:23:48,734 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-11-20 23:23:48,738 INFO L732 BasicCegarLoop]: Path program histogram: [4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:23:48,739 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:23:48,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:23:48 BoogieIcfgContainer [2021-11-20 23:23:48,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:23:48,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:23:48,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:23:48,796 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:23:48,797 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:15:08" (3/4) ... [2021-11-20 23:23:48,800 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 23:23:48,821 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-20 23:23:48,821 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-20 23:23:48,829 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-20 23:23:48,830 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-20 23:23:48,830 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-20 23:23:48,831 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 23:23:48,903 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 23:23:48,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:23:48,904 INFO L158 Benchmark]: Toolchain (without parser) took 520970.04ms. Allocated memory was 92.3MB in the beginning and 197.1MB in the end (delta: 104.9MB). Free memory was 51.0MB in the beginning and 143.3MB in the end (delta: -92.3MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2021-11-20 23:23:48,905 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:23:48,905 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.61ms. Allocated memory is still 92.3MB. Free memory was 50.8MB in the beginning and 65.6MB in the end (delta: -14.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:23:48,906 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.54ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 64.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:23:48,906 INFO L158 Benchmark]: Boogie Preprocessor took 28.64ms. Allocated memory is still 92.3MB. Free memory was 64.0MB in the beginning and 63.2MB in the end (delta: 843.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:23:48,907 INFO L158 Benchmark]: RCFGBuilder took 399.20ms. Allocated memory is still 92.3MB. Free memory was 62.8MB in the beginning and 51.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 23:23:48,910 INFO L158 Benchmark]: TraceAbstraction took 520039.12ms. Allocated memory was 92.3MB in the beginning and 197.1MB in the end (delta: 104.9MB). Free memory was 51.0MB in the beginning and 148.5MB in the end (delta: -97.6MB). Peak memory consumption was 115.8MB. Max. memory is 16.1GB. [2021-11-20 23:23:48,910 INFO L158 Benchmark]: Witness Printer took 107.58ms. Allocated memory is still 197.1MB. Free memory was 148.5MB in the beginning and 143.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 23:23:48,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.61ms. Allocated memory is still 92.3MB. Free memory was 50.8MB in the beginning and 65.6MB in the end (delta: -14.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.54ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 64.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.64ms. Allocated memory is still 92.3MB. Free memory was 64.0MB in the beginning and 63.2MB in the end (delta: 843.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 399.20ms. Allocated memory is still 92.3MB. Free memory was 62.8MB in the beginning and 51.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 520039.12ms. Allocated memory was 92.3MB in the beginning and 197.1MB in the end (delta: 104.9MB). Free memory was 51.0MB in the beginning and 148.5MB in the end (delta: -97.6MB). Peak memory consumption was 115.8MB. Max. memory is 16.1GB. * Witness Printer took 107.58ms. Allocated memory is still 197.1MB. Free memory was 148.5MB in the beginning and 143.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: 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 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 519.9s, OverallIterations: 15, TraceHistogramMax: 22, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 51.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 23.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 535 SdHoareTripleChecker+Valid, 15.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 473 mSDsluCounter, 3279 SdHoareTripleChecker+Invalid, 14.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 24 IncrementalHoareTripleChecker+Unchecked, 2836 mSDsCounter, 917 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3443 IncrementalHoareTripleChecker+Invalid, 4386 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 917 mSolverCounterUnsat, 553 mSDtfsCounter, 3443 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3150 GetRequests, 2639 SyntacticMatches, 62 SemanticMatches, 449 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 5419 ImplicationChecksByTransitivity, 95.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=10, InterpolantAutomatonStates: 197, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 28 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 146 PreInvPairs, 198 NumberOfFragments, 5728 HoareAnnotationTreeSize, 146 FomulaSimplifications, 2720 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 17 FomulaSimplificationsInter, 8800 FormulaSimplificationTreeSizeReductionInter, 22.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 1076 NumberOfCodeBlocks, 970 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2060 ConstructedInterpolants, 0 QuantifiedInterpolants, 9861 SizeOfPredicates, 74 NumberOfNonLiveVariables, 2812 ConjunctsInSsa, 295 ConjunctsInUnsatCore, 28 InterpolantComputations, 3 PerfectInterpolantSequences, 7095/7596 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: OVERALL_TIME: 57.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 97, DAG_INTERPRETER_EARLY_EXITS: 4, TOOLS_POST_APPLICATIONS: 52, TOOLS_POST_TIME: 4.0s, TOOLS_POST_CALL_APPLICATIONS: 89, TOOLS_POST_CALL_TIME: 41.5s, TOOLS_POST_RETURN_APPLICATIONS: 64, TOOLS_POST_RETURN_TIME: 10.7s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 205, TOOLS_QUANTIFIERELIM_TIME: 56.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 2.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 224, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 112, DOMAIN_JOIN_TIME: 0.8s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 97, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 21.7s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 21.7s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 64, CALL_SUMMARIZER_CACHE_MISSES: 5, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 1418, DAG_COMPRESSION_RETAINED_NODES: 223, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && 1 <= y) && y * b + x * q + y * s == xy * q + b + s * yy) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 2 * b + c <= 2) && b == x * q + y * s) && 0 <= c) && r == 0) && q == 0) && 1 <= x) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && x <= 2) && k * b + c == a) && unknown-#memory_int-unknown[1][1] == 0) && a == x * p + y * r) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((r == 0 && q == 0) && 1 <= x) && 1 <= xy) && yy <= 4) && #NULL == 0) && x <= 2) && k * b + c == a) && a == x * p + y * r) && #NULL == 0) && ((((((((((((((((unknown-#length-unknown[3] == 12 && yy == y * y) && a == c) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && y * x == xy) && \valid[3] == 1) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) || ((((((((((((((((unknown-#length-unknown[3] == 12 && yy == y * y) && a == y) && a == c) && x < y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && y * x == xy) && \valid[3] == 1) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown)))) || (((((((((((((((((((((((unknown-#length-unknown[3] == 12 && a == y) && y * b + x * q + y * s == xy * q + b + s * yy) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && b == x * q + y * s) && q == 1) && s == 0) && 1 <= x) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && b < a) && \valid[2] == 1) && #NULL == 0) && b + c == a) && unknown-#memory_int-unknown[1][0] == 48) && b + c <= 2) && k * b + c == a) && unknown-#memory_int-unknown[1][1] == 0) && a == x * p + y * r) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((((unknown-#length-unknown[3] == 12 && a == y) && y * b + x * q + y * s == xy * q + b + s * yy) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && 2 * b + c == a) && \valid[3] == 1) && 2 * b + c <= 2) && b == x * q + y * s) && q == 1) && s == 0) && 1 <= x) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && b < a) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && k * b + c == a) && unknown-#memory_int-unknown[1][1] == 0) && a == x * p + y * r) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((1 <= q && q <= 1) && s <= 0) && 0 <= s) && 1 <= x) && c <= 2) && #NULL == 0) && k * b + c == a) && a == x * p + y * r) && 0 <= temp) && temp <= 0) && #NULL == 0) && ((((((((((((((((unknown-#length-unknown[3] == 12 && yy == y * y) && a == c) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && y * x == xy) && \valid[3] == 1) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) || ((((((((((((((((unknown-#length-unknown[3] == 12 && yy == y * y) && a == y) && a == c) && x < y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && y * x == xy) && \valid[3] == 1) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown)))) || (((((((((((((((((((((((unknown-#length-unknown[3] == 12 && 1 <= y) && y * b + x * q + y * s == xy * q + b + s * yy) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 0 <= c) && r == 0) && c + y == a) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && x <= 2) && k * b + c == a) && unknown-#memory_int-unknown[1][1] == 0) && a == x * p + y * r) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && b + c == x) && #NULL == 0) - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((c < 2 * b && unknown-#length-unknown[3] == 12) && yy == y * y) && a == y) && a <= 2) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && y * x == xy) && \valid[3] == 1) && q == 1) && k == 0) && s == 0) && b <= c) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && b < a) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && a == x * p + y * r) && k + s == temp) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((((((c == 0 && unknown-#length-unknown[3] == 12) && 1 <= y) && y * b + x * q + y * s == xy * q + b + s * yy) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && y * x == xy) && \valid[3] == 1) && b == x * q + y * s) && r == 0) && q == 0) && k == 0) && 1 <= x) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && b + c <= 2) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && a == x * p + y * r) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((0 <= b && unknown-#length-unknown[3] == 12) && y <= 2) && 1 <= y) && 0 == x * q + y * s) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 2 * b < 2) && 0 <= c) && 1 <= x) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && 2 * c < 2) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && a == x * p + y * r) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2021-11-20 23:23:49,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dbb6ad-e69c-4b71-8af0-4dbb2f26d0f6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE