./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i --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_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/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_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/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_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/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 eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:35:35,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:35:35,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:35:35,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:35:35,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:35:35,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:35:35,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:35:35,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:35:35,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:35:35,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:35:35,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:35:35,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:35:35,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:35:35,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:35:35,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:35:35,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:35:35,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:35:35,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:35:35,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:35:35,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:35:35,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:35:35,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:35:35,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:35:35,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:35:35,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:35:35,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:35:35,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:35:35,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:35:35,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:35:35,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:35:35,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:35:35,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:35:35,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:35:35,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:35:35,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:35:35,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:35:35,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:35:35,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:35:35,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:35:35,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:35:35,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:35:35,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:35:35,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:35:35,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:35:35,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:35:35,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:35:35,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:35:35,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:35:35,759 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:35:35,759 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:35:35,760 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:35:35,760 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:35:35,761 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:35:35,761 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:35:35,761 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:35:35,761 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:35:35,761 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:35:35,762 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:35:35,762 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:35:35,762 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:35:35,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:35:35,763 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:35:35,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:35:35,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:35:35,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:35:35,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:35:35,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:35:35,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:35:35,765 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:35:35,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:35:35,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:35:35,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:35:35,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:35:35,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:35:35,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:35,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:35:35,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:35:35,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:35:35,767 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:35:35,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:35:35,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:35:35,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:35:35,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:35:35,768 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_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2021-11-20 23:35:36,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:35:36,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:35:36,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:35:36,060 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:35:36,060 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:35:36,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2021-11-20 23:35:36,131 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/data/059fb8f50/5d69dbd3238c4a6f8ca0ad69059efa03/FLAGe33f9450c [2021-11-20 23:35:36,768 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:35:36,768 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2021-11-20 23:35:36,786 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/data/059fb8f50/5d69dbd3238c4a6f8ca0ad69059efa03/FLAGe33f9450c [2021-11-20 23:35:37,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/data/059fb8f50/5d69dbd3238c4a6f8ca0ad69059efa03 [2021-11-20 23:35:37,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:35:37,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:35:37,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:37,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:35:37,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:35:37,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:37" (1/1) ... [2021-11-20 23:35:37,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5b86ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:37, skipping insertion in model container [2021-11-20 23:35:37,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:37" (1/1) ... [2021-11-20 23:35:37,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:35:37,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:35:37,488 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_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2021-11-20 23:35:37,605 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_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2021-11-20 23:35:37,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:37,637 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:35:37,688 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_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2021-11-20 23:35:37,758 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_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2021-11-20 23:35:37,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:37,803 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:35:37,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:37 WrapperNode [2021-11-20 23:35:37,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:37,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:37,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:35:37,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:35:37,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:37" (1/1) ... [2021-11-20 23:35:37,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:37" (1/1) ... [2021-11-20 23:35:37,927 INFO L137 Inliner]: procedures = 177, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1026 [2021-11-20 23:35:37,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:37,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:35:37,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:35:37,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:35:37,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:37" (1/1) ... [2021-11-20 23:35:37,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:37" (1/1) ... [2021-11-20 23:35:37,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:37" (1/1) ... [2021-11-20 23:35:37,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:37" (1/1) ... [2021-11-20 23:35:38,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:37" (1/1) ... [2021-11-20 23:35:38,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:37" (1/1) ... [2021-11-20 23:35:38,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:37" (1/1) ... [2021-11-20 23:35:38,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:35:38,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:35:38,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:35:38,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:35:38,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:37" (1/1) ... [2021-11-20 23:35:38,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:38,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:35:38,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:35:38,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:35:38,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:35:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:35:38,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:35:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:35:38,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:35:38,161 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:35:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:35:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:35:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:35:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:35:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 23:35:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:35:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:35:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:35:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:35:38,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:35:38,362 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:35:38,364 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:35:39,505 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:35:39,898 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:35:39,898 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-20 23:35:39,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:39 BoogieIcfgContainer [2021-11-20 23:35:39,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:35:39,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:35:39,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:35:39,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:35:39,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:35:37" (1/3) ... [2021-11-20 23:35:39,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1b692b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:39, skipping insertion in model container [2021-11-20 23:35:39,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:37" (2/3) ... [2021-11-20 23:35:39,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1b692b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:39, skipping insertion in model container [2021-11-20 23:35:39,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:39" (3/3) ... [2021-11-20 23:35:39,912 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test3-1.i [2021-11-20 23:35:39,920 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:35:39,920 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 23:35:40,003 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:35:40,020 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 23:35:40,024 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 23:35:40,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 110 states have (on average 1.8) internal successors, (198), 117 states have internal predecessors, (198), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:35:40,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:35:40,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:40,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:40,059 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:35:40,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:40,065 INFO L85 PathProgramCache]: Analyzing trace with hash -957118725, now seen corresponding path program 1 times [2021-11-20 23:35:40,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:40,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296823875] [2021-11-20 23:35:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:40,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:40,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:40,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296823875] [2021-11-20 23:35:40,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296823875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:40,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:40,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:35:40,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046469008] [2021-11-20 23:35:40,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:40,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:35:40,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:40,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:35:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:35:40,323 INFO L87 Difference]: Start difference. First operand has 123 states, 110 states have (on average 1.8) internal successors, (198), 117 states have internal predecessors, (198), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:35:41,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:41,229 INFO L93 Difference]: Finished difference Result 245 states and 432 transitions. [2021-11-20 23:35:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:35:41,243 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 23:35:41,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:41,254 INFO L225 Difference]: With dead ends: 245 [2021-11-20 23:35:41,254 INFO L226 Difference]: Without dead ends: 122 [2021-11-20 23:35:41,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 23:35:41,265 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:41,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:35:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-20 23:35:41,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-11-20 23:35:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 110 states have (on average 1.2181818181818183) internal successors, (134), 116 states have internal predecessors, (134), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:35:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2021-11-20 23:35:41,339 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 8 [2021-11-20 23:35:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:41,340 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2021-11-20 23:35:41,340 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), 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 23:35:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2021-11-20 23:35:41,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 23:35:41,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:41,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:41,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:35:41,344 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:35:41,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:41,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1851937168, now seen corresponding path program 1 times [2021-11-20 23:35:41,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:41,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080315565] [2021-11-20 23:35:41,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:41,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:41,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:41,474 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:41,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080315565] [2021-11-20 23:35:41,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080315565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:41,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:41,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:35:41,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421132554] [2021-11-20 23:35:41,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:41,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:35:41,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:41,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:35:41,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:35:41,479 INFO L87 Difference]: Start difference. First operand 122 states and 150 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:35:42,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:42,571 INFO L93 Difference]: Finished difference Result 258 states and 326 transitions. [2021-11-20 23:35:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:35:42,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 23:35:42,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:42,578 INFO L225 Difference]: With dead ends: 258 [2021-11-20 23:35:42,578 INFO L226 Difference]: Without dead ends: 189 [2021-11-20 23:35:42,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:35:42,581 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 73 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:42,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 359 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 23:35:42,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-20 23:35:42,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 124. [2021-11-20 23:35:42,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 118 states have internal predecessors, (136), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:35:42,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2021-11-20 23:35:42,599 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 13 [2021-11-20 23:35:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:42,600 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2021-11-20 23:35:42,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:35:42,600 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2021-11-20 23:35:42,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 23:35:42,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:42,602 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:42,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:35:42,603 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:35:42,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:42,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1227120832, now seen corresponding path program 1 times [2021-11-20 23:35:42,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:42,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728153541] [2021-11-20 23:35:42,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:42,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:42,626 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:35:42,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729601925] [2021-11-20 23:35:42,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:42,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:35:42,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:35:42,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:35:42,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:35:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:42,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:35:42,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:35:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:35:43,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:35:43,089 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:43,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728153541] [2021-11-20 23:35:43,089 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:35:43,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729601925] [2021-11-20 23:35:43,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729601925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:43,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:43,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:35:43,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576686848] [2021-11-20 23:35:43,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:43,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:35:43,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:43,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:35:43,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:35:43,097 INFO L87 Difference]: Start difference. First operand 124 states and 152 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:35:44,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:44,410 INFO L93 Difference]: Finished difference Result 304 states and 377 transitions. [2021-11-20 23:35:44,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:35:44,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-20 23:35:44,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:44,420 INFO L225 Difference]: With dead ends: 304 [2021-11-20 23:35:44,420 INFO L226 Difference]: Without dead ends: 183 [2021-11-20 23:35:44,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:35:44,422 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 58 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:44,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 280 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 23:35:44,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-20 23:35:44,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 167. [2021-11-20 23:35:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 155 states have (on average 1.1935483870967742) internal successors, (185), 161 states have internal predecessors, (185), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:35:44,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 201 transitions. [2021-11-20 23:35:44,440 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 201 transitions. Word has length 37 [2021-11-20 23:35:44,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:44,440 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 201 transitions. [2021-11-20 23:35:44,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:35:44,441 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 201 transitions. [2021-11-20 23:35:44,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 23:35:44,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:44,456 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:44,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:35:44,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:35:44,671 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:35:44,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:44,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2111487482, now seen corresponding path program 1 times [2021-11-20 23:35:44,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:44,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750640488] [2021-11-20 23:35:44,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:44,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:44,690 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:35:44,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579422786] [2021-11-20 23:35:44,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:44,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:35:44,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:35:44,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:35:44,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:35:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:44,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:35:44,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:35:45,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 23:35:45,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:35:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 23:35:45,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:35:45,063 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:45,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750640488] [2021-11-20 23:35:45,066 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:35:45,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579422786] [2021-11-20 23:35:45,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579422786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:45,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:45,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:35:45,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417106088] [2021-11-20 23:35:45,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:45,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:35:45,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:45,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:35:45,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:35:45,067 INFO L87 Difference]: Start difference. First operand 167 states and 201 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:35:47,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:35:49,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:35:49,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:49,688 INFO L93 Difference]: Finished difference Result 231 states and 285 transitions. [2021-11-20 23:35:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:35:49,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2021-11-20 23:35:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:49,722 INFO L225 Difference]: With dead ends: 231 [2021-11-20 23:35:49,722 INFO L226 Difference]: Without dead ends: 212 [2021-11-20 23:35:49,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:35:49,723 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 58 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:49,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 354 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-20 23:35:49,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-20 23:35:49,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2021-11-20 23:35:49,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 157 states have (on average 1.1910828025477707) internal successors, (187), 163 states have internal predecessors, (187), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:35:49,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 203 transitions. [2021-11-20 23:35:49,739 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 203 transitions. Word has length 50 [2021-11-20 23:35:49,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:49,740 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 203 transitions. [2021-11-20 23:35:49,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:35:49,740 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 203 transitions. [2021-11-20 23:35:49,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-20 23:35:49,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:49,743 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:49,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:35:49,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:35:49,954 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:35:49,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:49,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1926488172, now seen corresponding path program 1 times [2021-11-20 23:35:49,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:49,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846827665] [2021-11-20 23:35:49,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:49,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:49,966 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:35:49,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071654179] [2021-11-20 23:35:49,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:49,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:35:49,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:35:49,967 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:35:49,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:35:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:50,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:35:50,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:35:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 23:35:50,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:35:50,394 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:50,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846827665] [2021-11-20 23:35:50,394 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:35:50,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071654179] [2021-11-20 23:35:50,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071654179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:50,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:50,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:35:50,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516227355] [2021-11-20 23:35:50,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:50,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:35:50,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:50,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:35:50,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:35:50,399 INFO L87 Difference]: Start difference. First operand 169 states and 203 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:35:51,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:51,059 INFO L93 Difference]: Finished difference Result 395 states and 492 transitions. [2021-11-20 23:35:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:35:51,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-11-20 23:35:51,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:51,062 INFO L225 Difference]: With dead ends: 395 [2021-11-20 23:35:51,062 INFO L226 Difference]: Without dead ends: 242 [2021-11-20 23:35:51,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:35:51,064 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 257 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:51,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 296 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:35:51,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-20 23:35:51,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 214. [2021-11-20 23:35:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 202 states have (on average 1.193069306930693) internal successors, (241), 208 states have internal predecessors, (241), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:35:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 257 transitions. [2021-11-20 23:35:51,084 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 257 transitions. Word has length 57 [2021-11-20 23:35:51,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:51,084 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 257 transitions. [2021-11-20 23:35:51,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:35:51,085 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 257 transitions. [2021-11-20 23:35:51,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-20 23:35:51,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:51,088 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:35:51,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:35:51,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:35:51,303 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:35:51,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:51,304 INFO L85 PathProgramCache]: Analyzing trace with hash 798103091, now seen corresponding path program 1 times [2021-11-20 23:35:51,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:51,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753204756] [2021-11-20 23:35:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:51,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:51,322 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:35:51,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936227674] [2021-11-20 23:35:51,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:51,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:35:51,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:35:51,327 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:35:51,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:36:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:23,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:36:23,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:36:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:23,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:36:23,564 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:23,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753204756] [2021-11-20 23:36:23,564 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:36:23,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936227674] [2021-11-20 23:36:23,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936227674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:23,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:23,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:23,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714838699] [2021-11-20 23:36:23,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:23,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:36:23,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:23,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:36:23,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:23,566 INFO L87 Difference]: Start difference. First operand 214 states and 257 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:36:25,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:36:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:25,484 INFO L93 Difference]: Finished difference Result 411 states and 498 transitions. [2021-11-20 23:36:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:36:25,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2021-11-20 23:36:25,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:25,493 INFO L225 Difference]: With dead ends: 411 [2021-11-20 23:36:25,493 INFO L226 Difference]: Without dead ends: 216 [2021-11-20 23:36:25,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:25,495 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 1 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:25,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 389 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:36:25,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-20 23:36:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-20 23:36:25,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 203 states have (on average 1.1970443349753694) internal successors, (243), 210 states have internal predecessors, (243), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-20 23:36:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 260 transitions. [2021-11-20 23:36:25,511 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 260 transitions. Word has length 64 [2021-11-20 23:36:25,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:25,512 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 260 transitions. [2021-11-20 23:36:25,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:36:25,512 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 260 transitions. [2021-11-20 23:36:25,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 23:36:25,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:25,515 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:25,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:36:25,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:36:25,731 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:25,732 INFO L85 PathProgramCache]: Analyzing trace with hash -320971085, now seen corresponding path program 1 times [2021-11-20 23:36:25,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:25,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620615498] [2021-11-20 23:36:25,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:25,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:25,745 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:36:25,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052669667] [2021-11-20 23:36:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:25,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:36:25,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:36:25,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:36:25,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5a3c0e-f3ca-4ccd-b99a-776b48a1c522/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 23:37:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:25,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 23:37:25,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:37:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:37:25,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:37:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:37:25,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:25,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620615498] [2021-11-20 23:37:25,970 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:37:25,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052669667] [2021-11-20 23:37:25,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052669667] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:37:25,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1377252087] [2021-11-20 23:37:25,995 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-20 23:37:25,995 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:37:26,000 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:37:26,006 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:37:26,007 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:37:26,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-20 23:37:26,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:37:26,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,205 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:37:26,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:37:26,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-20 23:37:26,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:37:26,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-20 23:37:26,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,444 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-20 23:37:26,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2021-11-20 23:37:26,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,508 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-20 23:37:26,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 53 [2021-11-20 23:37:26,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-20 23:37:26,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:26,615 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-20 23:37:26,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-20 23:37:28,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 77 [2021-11-20 23:37:28,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 76 [2021-11-20 23:37:28,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-20 23:37:28,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-20 23:37:28,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-20 23:37:28,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 98 [2021-11-20 23:37:28,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 79 [2021-11-20 23:37:28,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-20 23:37:28,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-20 23:37:28,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 115 [2021-11-20 23:37:28,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,764 INFO L354 Elim1Store]: treesize reduction 128, result has 14.1 percent of original size [2021-11-20 23:37:28,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 127 treesize of output 138 [2021-11-20 23:37:28,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,862 INFO L354 Elim1Store]: treesize reduction 232, result has 10.1 percent of original size [2021-11-20 23:37:28,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 126 treesize of output 132 [2021-11-20 23:37:28,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:28,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 77 [2021-11-20 23:37:29,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 23:37:29,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-20 23:37:29,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-20 23:37:29,645 INFO L354 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2021-11-20 23:37:29,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 97 [2021-11-20 23:37:29,674 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-20 23:37:29,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 93 [2021-11-20 23:37:29,705 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-20 23:37:29,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 89 [2021-11-20 23:37:29,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 23:37:29,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-20 23:37:29,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-20 23:37:29,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-20 23:37:29,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-20 23:37:29,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:29,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-20 23:37:30,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-20 23:37:30,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-20 23:37:30,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:30,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-20 23:37:38,608 WARN L227 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 66 DAG size of output: 32 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:37:38,609 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-20 23:37:38,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2847 treesize of output 2324 [2021-11-20 23:37:38,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:37:48,665 WARN L227 SmtUtils]: Spent 10.01s on a formula simplification. DAG size of input: 90 DAG size of output: 46 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:37:48,665 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-20 23:37:48,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2948 treesize of output 2666 [2021-11-20 23:38:02,836 WARN L227 SmtUtils]: Spent 14.01s on a formula simplification. DAG size of input: 252 DAG size of output: 143 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:38:02,837 INFO L354 Elim1Store]: treesize reduction 2662, result has 30.3 percent of original size [2021-11-20 23:38:02,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 2852 treesize of output 2682 [2021-11-20 23:38:03,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:03,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:03,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:05,168 INFO L354 Elim1Store]: treesize reduction 188, result has 20.0 percent of original size [2021-11-20 23:38:05,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 25950 treesize of output 25981 [2021-11-20 23:38:05,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:05,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:06,269 INFO L354 Elim1Store]: treesize reduction 126, result has 17.1 percent of original size [2021-11-20 23:38:06,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 25960 treesize of output 25974 [2021-11-20 23:38:08,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:08,216 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-20 23:38:08,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 30 [2021-11-20 23:38:09,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:09,208 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:38:09,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 63 [2021-11-20 23:38:15,004 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:38:15,432 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:38:16,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:38:16,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:16,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:38:16,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:16,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:16,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:38:16,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:16,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:38:16,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:16,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:16,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:16,324 INFO L244 Elim1Store]: Index analysis took 114 ms [2021-11-20 23:38:16,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1274 treesize of output 812 [2021-11-20 23:38:18,496 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:38:18,825 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:38:35,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:35,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2021-11-20 23:38:36,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:36,577 INFO L244 Elim1Store]: Index analysis took 112 ms [2021-11-20 23:38:36,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:37,075 INFO L354 Elim1Store]: treesize reduction 18, result has 66.0 percent of original size [2021-11-20 23:38:37,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 75 treesize of output 87 [2021-11-20 23:38:38,328 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 23:38:44,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:44,711 INFO L244 Elim1Store]: Index analysis took 309 ms [2021-11-20 23:38:44,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:38:48,679 INFO L354 Elim1Store]: treesize reduction 8926, result has 45.5 percent of original size [2021-11-20 23:38:48,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 9501 treesize of output 14050 [2021-11-20 23:39:19,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:39:19,774 INFO L354 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2021-11-20 23:39:19,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 36120 treesize of output 35543 [2021-11-20 23:39:52,610 INFO L190 IndexEqualityManager]: detected not equals via solver