./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s5if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/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_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/s5if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/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_4fcb82a9-5e0f-4380-8456-3e47af897756/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 b618695aa08df106816e7defd71220f009a5c8c09539ff7c8c29235c85f2ce8d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:10:12,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:10:12,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:10:12,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:10:12,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:10:12,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:10:12,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:10:12,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:10:12,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:10:12,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:10:12,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:10:12,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:10:12,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:10:12,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:10:12,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:10:12,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:10:12,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:10:12,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:10:12,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:10:12,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:10:12,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:10:12,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:10:12,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:10:12,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:10:12,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:10:12,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:10:12,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:10:12,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:10:12,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:10:12,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:10:12,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:10:12,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:10:12,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:10:12,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:10:12,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:10:12,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:10:12,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:10:12,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:10:12,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:10:12,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:10:12,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:10:12,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:10:12,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:10:12,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:10:12,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:10:12,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:10:12,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:10:12,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:10:12,222 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:10:12,223 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:10:12,223 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:10:12,223 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:10:12,224 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:10:12,224 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:10:12,224 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:10:12,224 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:10:12,225 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:10:12,225 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:10:12,225 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:10:12,225 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:10:12,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:10:12,226 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:10:12,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:10:12,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:10:12,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:10:12,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:10:12,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:10:12,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:10:12,227 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:10:12,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:10:12,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:10:12,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:10:12,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:10:12,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:10:12,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:10:12,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:10:12,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:10:12,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:10:12,230 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:10:12,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:10:12,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:10:12,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:10:12,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:10:12,231 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_4fcb82a9-5e0f-4380-8456-3e47af897756/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b618695aa08df106816e7defd71220f009a5c8c09539ff7c8c29235c85f2ce8d [2021-11-21 00:10:12,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:10:12,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:10:12,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:10:12,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:10:12,552 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:10:12,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-fpi/s5if.c [2021-11-21 00:10:12,625 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/data/0ebf9348e/8a16a652fbf14ed1a35cbf42d6fc93d5/FLAG869d2d75a [2021-11-21 00:10:13,028 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:10:13,029 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/sv-benchmarks/c/array-fpi/s5if.c [2021-11-21 00:10:13,035 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/data/0ebf9348e/8a16a652fbf14ed1a35cbf42d6fc93d5/FLAG869d2d75a [2021-11-21 00:10:13,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/data/0ebf9348e/8a16a652fbf14ed1a35cbf42d6fc93d5 [2021-11-21 00:10:13,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:10:13,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:10:13,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:10:13,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:10:13,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:10:13,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:10:13" (1/1) ... [2021-11-21 00:10:13,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ad048c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:13, skipping insertion in model container [2021-11-21 00:10:13,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:10:13" (1/1) ... [2021-11-21 00:10:13,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:10:13,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:10:13,644 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_4fcb82a9-5e0f-4380-8456-3e47af897756/sv-benchmarks/c/array-fpi/s5if.c[587,600] [2021-11-21 00:10:13,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:10:13,669 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:10:13,685 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_4fcb82a9-5e0f-4380-8456-3e47af897756/sv-benchmarks/c/array-fpi/s5if.c[587,600] [2021-11-21 00:10:13,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:10:13,705 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:10:13,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:13 WrapperNode [2021-11-21 00:10:13,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:10:13,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:10:13,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:10:13,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:10:13,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:13" (1/1) ... [2021-11-21 00:10:13,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:13" (1/1) ... [2021-11-21 00:10:13,742 INFO L137 Inliner]: procedures = 17, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2021-11-21 00:10:13,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:10:13,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:10:13,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:10:13,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:10:13,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:13" (1/1) ... [2021-11-21 00:10:13,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:13" (1/1) ... [2021-11-21 00:10:13,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:13" (1/1) ... [2021-11-21 00:10:13,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:13" (1/1) ... [2021-11-21 00:10:13,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:13" (1/1) ... [2021-11-21 00:10:13,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:13" (1/1) ... [2021-11-21 00:10:13,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:13" (1/1) ... [2021-11-21 00:10:13,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:10:13,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:10:13,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:10:13,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:10:13,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:13" (1/1) ... [2021-11-21 00:10:13,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:10:13,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:10:13,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:10:13,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:10:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:10:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:10:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:10:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:10:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:10:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:10:13,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:10:13,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:10:13,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:10:13,940 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:10:13,942 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:10:14,168 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:10:14,210 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:10:14,218 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 00:10:14,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:10:14 BoogieIcfgContainer [2021-11-21 00:10:14,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:10:14,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:10:14,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:10:14,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:10:14,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:10:13" (1/3) ... [2021-11-21 00:10:14,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465f14f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:10:14, skipping insertion in model container [2021-11-21 00:10:14,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:13" (2/3) ... [2021-11-21 00:10:14,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465f14f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:10:14, skipping insertion in model container [2021-11-21 00:10:14,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:10:14" (3/3) ... [2021-11-21 00:10:14,242 INFO L111 eAbstractionObserver]: Analyzing ICFG s5if.c [2021-11-21 00:10:14,259 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:10:14,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:10:14,314 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:10:14,322 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 [2021-11-21 00:10:14,322 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:10:14,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:14,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 00:10:14,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:14,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 00:10:14,342 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:10:14,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:14,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1569409207, now seen corresponding path program 1 times [2021-11-21 00:10:14,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:14,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003561772] [2021-11-21 00:10:14,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:14,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:10:14,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:14,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003561772] [2021-11-21 00:10:14,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003561772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:14,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:14,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:10:14,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105257613] [2021-11-21 00:10:14,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:14,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:10:14,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:14,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:10:14,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:10:14,606 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-21 00:10:14,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:14,663 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2021-11-21 00:10:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:10:14,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 00:10:14,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:14,675 INFO L225 Difference]: With dead ends: 18 [2021-11-21 00:10:14,676 INFO L226 Difference]: Without dead ends: 8 [2021-11-21 00:10:14,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:10:14,685 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:14,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:10:14,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-21 00:10:14,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-21 00:10:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:14,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-11-21 00:10:14,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2021-11-21 00:10:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:14,719 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-11-21 00:10:14,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-21 00:10:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-11-21 00:10:14,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 00:10:14,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:14,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:14,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:10:14,724 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:10:14,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:14,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1413550180, now seen corresponding path program 1 times [2021-11-21 00:10:14,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:14,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869846325] [2021-11-21 00:10:14,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:14,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:10:14,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:14,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869846325] [2021-11-21 00:10:14,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869846325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:14,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:14,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:10:14,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060007260] [2021-11-21 00:10:14,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:14,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:10:14,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:14,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:10:14,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:10:14,800 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:14,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:14,821 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-11-21 00:10:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:10:14,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 00:10:14,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:14,822 INFO L225 Difference]: With dead ends: 12 [2021-11-21 00:10:14,822 INFO L226 Difference]: Without dead ends: 9 [2021-11-21 00:10:14,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:10:14,824 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:14,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:10:14,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-21 00:10:14,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-21 00:10:14,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-11-21 00:10:14,848 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2021-11-21 00:10:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:14,848 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-21 00:10:14,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:14,849 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-11-21 00:10:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 00:10:14,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:14,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:14,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:10:14,850 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:10:14,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:14,851 INFO L85 PathProgramCache]: Analyzing trace with hash -870274037, now seen corresponding path program 1 times [2021-11-21 00:10:14,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:14,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503984896] [2021-11-21 00:10:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:14,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:14,914 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:10:14,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601434111] [2021-11-21 00:10:14,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:14,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:10:14,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:10:14,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:10:14,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:10:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:14,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-21 00:10:14,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:10:15,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-11-21 00:10:15,062 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 11 treesize of output 7 [2021-11-21 00:10:15,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-21 00:10:15,333 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-11-21 00:10:15,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 27 [2021-11-21 00:10:15,479 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 00:10:15,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 40 [2021-11-21 00:10:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:10:15,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:10:16,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:10:16,028 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:16,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503984896] [2021-11-21 00:10:16,028 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:10:16,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601434111] [2021-11-21 00:10:16,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601434111] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:10:16,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [288147478] [2021-11-21 00:10:16,058 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-21 00:10:16,058 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:10:16,063 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:10:16,068 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:10:16,069 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:10:16,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:16,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:16,303 INFO L354 Elim1Store]: treesize reduction 62, result has 35.4 percent of original size [2021-11-21 00:10:16,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 27 treesize of output 55 [2021-11-21 00:10:16,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:16,421 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 00:10:16,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2021-11-21 00:10:16,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:16,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:16,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:16,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:16,621 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-21 00:10:16,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-21 00:10:16,771 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 [2021-11-21 00:10:16,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:16,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-11-21 00:10:17,012 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 16 treesize of output 12 [2021-11-21 00:10:17,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:17,166 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-21 00:10:17,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2021-11-21 00:10:17,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:17,219 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-21 00:10:17,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-11-21 00:10:17,556 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:10:17,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-21 00:10:17,887 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:10:17,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-21 00:10:18,196 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:10:18,471 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:10:18,472 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:10:18,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-11-21 00:10:18,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399027321] [2021-11-21 00:10:18,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 00:10:18,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:10:18,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:18,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:10:18,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-21 00:10:18,474 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:18,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:18,534 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-11-21 00:10:18,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:10:18,536 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 00:10:18,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:18,537 INFO L225 Difference]: With dead ends: 15 [2021-11-21 00:10:18,537 INFO L226 Difference]: Without dead ends: 12 [2021-11-21 00:10:18,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-21 00:10:18,543 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:18,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 9 Unchecked, 0.1s Time] [2021-11-21 00:10:18,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-21 00:10:18,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-11-21 00:10:18,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:18,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-11-21 00:10:18,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2021-11-21 00:10:18,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:18,556 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-21 00:10:18,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:18,556 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-21 00:10:18,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:10:18,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:18,557 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:18,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:10:18,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:10:18,778 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:10:18,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:18,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1208582788, now seen corresponding path program 2 times [2021-11-21 00:10:18,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:18,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478256070] [2021-11-21 00:10:18,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:18,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:18,793 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:10:18,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185959123] [2021-11-21 00:10:18,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:10:18,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:10:18,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:10:18,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:10:18,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:10:18,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 00:10:18,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:10:18,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:10:18,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:10:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:10:18,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:10:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:10:18,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:18,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478256070] [2021-11-21 00:10:18,989 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:10:18,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185959123] [2021-11-21 00:10:18,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185959123] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:10:18,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [156292772] [2021-11-21 00:10:18,992 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-21 00:10:18,992 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:10:18,993 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:10:18,993 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:10:18,993 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:10:19,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,208 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-21 00:10:19,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-21 00:10:19,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:10:19,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2021-11-21 00:10:19,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 27 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2021-11-21 00:10:19,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:19,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:19,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:19,813 INFO L354 Elim1Store]: treesize reduction 196, result has 17.6 percent of original size [2021-11-21 00:10:19,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 26 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 385 treesize of output 380 [2021-11-21 00:10:20,537 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 [2021-11-21 00:10:20,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:20,642 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-21 00:10:20,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2021-11-21 00:10:20,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:20,684 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-21 00:10:20,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-11-21 00:10:20,961 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:10:20,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-21 00:10:21,041 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:10:21,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-21 00:10:21,596 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:10:21,799 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:10:21,801 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:10:21,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-11-21 00:10:21,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933077402] [2021-11-21 00:10:21,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 00:10:21,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:10:21,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:10:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:10:21,806 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2021-11-21 00:10:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:21,877 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-11-21 00:10:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:10:21,878 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-21 00:10:21,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:21,878 INFO L225 Difference]: With dead ends: 20 [2021-11-21 00:10:21,878 INFO L226 Difference]: Without dead ends: 14 [2021-11-21 00:10:21,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-21 00:10:21,880 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:21,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 10 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:10:21,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-21 00:10:21,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2021-11-21 00:10:21,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-11-21 00:10:21,884 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 9 [2021-11-21 00:10:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:21,884 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-11-21 00:10:21,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2021-11-21 00:10:21,884 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-11-21 00:10:21,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:10:21,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:21,885 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:21,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:10:22,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:10:22,086 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:10:22,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:22,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1413604450, now seen corresponding path program 3 times [2021-11-21 00:10:22,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:22,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206436285] [2021-11-21 00:10:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:22,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:22,099 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:10:22,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246997335] [2021-11-21 00:10:22,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:10:22,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:10:22,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:10:22,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:10:22,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:10:22,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:10:22,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:10:22,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:10:22,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:10:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:10:22,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:10:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:10:22,250 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:22,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206436285] [2021-11-21 00:10:22,250 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:10:22,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246997335] [2021-11-21 00:10:22,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246997335] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:10:22,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [619380350] [2021-11-21 00:10:22,252 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-21 00:10:22,253 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:10:22,253 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:10:22,253 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:10:22,253 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:10:22,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:22,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:22,428 INFO L354 Elim1Store]: treesize reduction 62, result has 35.4 percent of original size [2021-11-21 00:10:22,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 27 treesize of output 55 [2021-11-21 00:10:22,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:22,506 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 00:10:22,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2021-11-21 00:10:22,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:22,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:22,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:22,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:22,633 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-21 00:10:22,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-21 00:10:22,737 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 [2021-11-21 00:10:22,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:22,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-11-21 00:10:22,930 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 [2021-11-21 00:10:23,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:23,066 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-21 00:10:23,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2021-11-21 00:10:23,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:23,123 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-21 00:10:23,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-11-21 00:10:23,398 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:10:23,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-21 00:10:23,984 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:10:23,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-21 00:10:24,312 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:10:24,500 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:10:24,501 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:10:24,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-21 00:10:24,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414593298] [2021-11-21 00:10:24,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 00:10:24,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 00:10:24,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:24,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 00:10:24,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:10:24,502 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2021-11-21 00:10:24,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:24,595 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-11-21 00:10:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:10:24,605 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-21 00:10:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:24,606 INFO L225 Difference]: With dead ends: 14 [2021-11-21 00:10:24,606 INFO L226 Difference]: Without dead ends: 11 [2021-11-21 00:10:24,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-11-21 00:10:24,608 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:24,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:10:24,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-21 00:10:24,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-21 00:10:24,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-11-21 00:10:24,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-21 00:10:24,612 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2021-11-21 00:10:24,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:24,612 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-21 00:10:24,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2021-11-21 00:10:24,612 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-11-21 00:10:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 00:10:24,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:24,613 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:24,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:10:24,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:10:24,829 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:10:24,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:24,830 INFO L85 PathProgramCache]: Analyzing trace with hash -871956407, now seen corresponding path program 4 times [2021-11-21 00:10:24,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:24,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492050316] [2021-11-21 00:10:24,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:24,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:24,842 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:10:24,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223684139] [2021-11-21 00:10:24,842 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:10:24,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:10:24,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:10:24,843 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:10:24,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:10:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:24,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 00:10:24,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:10:24,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-11-21 00:10:24,914 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 11 treesize of output 7 [2021-11-21 00:10:24,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-21 00:10:24,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:24,978 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 28 treesize of output 30 [2021-11-21 00:10:25,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:25,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-21 00:10:25,142 INFO L354 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2021-11-21 00:10:25,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 37 [2021-11-21 00:10:25,225 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:10:25,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 47 [2021-11-21 00:10:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:10:25,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:10:38,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:10:38,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:38,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492050316] [2021-11-21 00:10:38,687 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:10:38,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223684139] [2021-11-21 00:10:38,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223684139] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:10:38,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1913995326] [2021-11-21 00:10:38,689 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-21 00:10:38,690 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:10:38,690 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:10:38,690 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:10:38,690 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:10:38,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:38,792 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 00:10:38,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2021-11-21 00:10:38,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:38,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:38,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:38,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:38,951 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-21 00:10:38,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-21 00:10:39,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:39,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:39,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:10:39,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:39,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:39,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:39,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 27 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2021-11-21 00:10:39,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:39,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:39,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:39,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:39,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:39,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:39,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:39,429 INFO L354 Elim1Store]: treesize reduction 196, result has 17.6 percent of original size [2021-11-21 00:10:39,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 26 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 381 treesize of output 376 [2021-11-21 00:10:40,063 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 [2021-11-21 00:10:40,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:40,284 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-21 00:10:40,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-11-21 00:10:40,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:40,488 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-21 00:10:40,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2021-11-21 00:10:40,609 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:10:40,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-21 00:10:40,748 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:10:40,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-21 00:10:42,002 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:10:42,507 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:10:42,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:10:42,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-11-21 00:10:42,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796045783] [2021-11-21 00:10:42,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 00:10:42,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-21 00:10:42,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:42,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-21 00:10:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:10:42,509 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:44,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:44,686 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2021-11-21 00:10:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:10:44,686 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-21 00:10:44,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:44,687 INFO L225 Difference]: With dead ends: 18 [2021-11-21 00:10:44,687 INFO L226 Difference]: Without dead ends: 15 [2021-11-21 00:10:44,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-11-21 00:10:44,688 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:44,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 76 Invalid, 0 Unknown, 9 Unchecked, 0.4s Time] [2021-11-21 00:10:44,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-21 00:10:44,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-11-21 00:10:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:44,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-21 00:10:44,694 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2021-11-21 00:10:44,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:44,694 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-21 00:10:44,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:44,694 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-21 00:10:44,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:10:44,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:44,695 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:44,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-21 00:10:44,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-21 00:10:44,901 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:10:44,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:44,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1260736258, now seen corresponding path program 5 times [2021-11-21 00:10:44,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:44,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773960321] [2021-11-21 00:10:44,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:44,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:44,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:10:44,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26188087] [2021-11-21 00:10:44,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:10:44,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:10:44,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:10:44,925 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:10:44,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:10:44,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 00:10:44,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:10:44,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:10:44,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:10:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:10:45,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:10:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:10:45,106 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:45,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773960321] [2021-11-21 00:10:45,106 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:10:45,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26188087] [2021-11-21 00:10:45,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26188087] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:10:45,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1064855438] [2021-11-21 00:10:45,109 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-21 00:10:45,109 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:10:45,109 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:10:45,110 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:10:45,110 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:10:45,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,276 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-21 00:10:45,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-21 00:10:45,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2021-11-21 00:10:45,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:10:45,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 27 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2021-11-21 00:10:45,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:45,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:45,778 INFO L354 Elim1Store]: treesize reduction 220, result has 11.6 percent of original size [2021-11-21 00:10:45,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 383 treesize of output 372 [2021-11-21 00:10:46,270 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 [2021-11-21 00:10:46,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:46,382 INFO L354 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2021-11-21 00:10:46,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 37 [2021-11-21 00:10:46,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:46,423 INFO L354 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2021-11-21 00:10:46,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 38 [2021-11-21 00:10:46,901 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:10:46,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-21 00:10:47,216 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:10:47,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-21 00:10:47,484 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:10:47,663 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:10:47,664 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:10:47,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-11-21 00:10:47,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786211940] [2021-11-21 00:10:47,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 00:10:47,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:10:47,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:47,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:10:47,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-21 00:10:47,665 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:47,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:47,745 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-11-21 00:10:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:10:47,746 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 00:10:47,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:47,746 INFO L225 Difference]: With dead ends: 23 [2021-11-21 00:10:47,746 INFO L226 Difference]: Without dead ends: 16 [2021-11-21 00:10:47,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:10:47,747 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:47,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 10 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:10:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-21 00:10:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2021-11-21 00:10:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:47,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-11-21 00:10:47,752 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 11 [2021-11-21 00:10:47,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:47,752 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-11-21 00:10:47,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:47,752 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-11-21 00:10:47,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:10:47,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:47,753 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:47,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:10:47,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-21 00:10:47,961 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:10:47,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:47,963 INFO L85 PathProgramCache]: Analyzing trace with hash 973526812, now seen corresponding path program 6 times [2021-11-21 00:10:47,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:47,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726128585] [2021-11-21 00:10:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:47,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:47,988 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:10:47,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161021567] [2021-11-21 00:10:47,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:10:47,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:10:47,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:10:47,991 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:10:48,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:10:48,043 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:10:48,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:10:48,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:10:48,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:10:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:10:48,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:10:48,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:10:48,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:48,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726128585] [2021-11-21 00:10:48,165 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:10:48,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161021567] [2021-11-21 00:10:48,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161021567] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:10:48,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [306990809] [2021-11-21 00:10:48,167 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-21 00:10:48,167 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:10:48,167 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:10:48,168 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:10:48,168 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:10:48,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,278 INFO L354 Elim1Store]: treesize reduction 62, result has 35.4 percent of original size [2021-11-21 00:10:48,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 55 [2021-11-21 00:10:48,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,378 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-21 00:10:48,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-21 00:10:48,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2021-11-21 00:10:48,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 27 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2021-11-21 00:10:48,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:48,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:48,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:48,815 INFO L354 Elim1Store]: treesize reduction 196, result has 17.6 percent of original size [2021-11-21 00:10:48,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 26 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 381 treesize of output 376 [2021-11-21 00:10:49,437 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 [2021-11-21 00:10:49,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:49,547 INFO L354 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2021-11-21 00:10:49,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 38 [2021-11-21 00:10:49,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:49,823 INFO L354 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2021-11-21 00:10:49,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 37 [2021-11-21 00:10:50,013 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:10:50,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-21 00:10:50,325 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:10:50,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-21 00:10:50,542 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:10:50,746 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:10:50,746 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:10:50,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-21 00:10:50,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403044589] [2021-11-21 00:10:50,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 00:10:50,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:10:50,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:50,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:10:50,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:10:50,748 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:50,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:50,890 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-11-21 00:10:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:10:50,890 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 00:10:50,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:50,891 INFO L225 Difference]: With dead ends: 16 [2021-11-21 00:10:50,891 INFO L226 Difference]: Without dead ends: 13 [2021-11-21 00:10:50,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-11-21 00:10:50,892 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:50,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:10:50,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-21 00:10:50,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-21 00:10:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:50,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-11-21 00:10:50,896 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2021-11-21 00:10:50,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:50,896 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-21 00:10:50,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:50,896 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-11-21 00:10:50,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 00:10:50,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:50,897 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:50,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-21 00:10:51,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-21 00:10:51,101 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:10:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash 114668683, now seen corresponding path program 7 times [2021-11-21 00:10:51,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:51,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967168348] [2021-11-21 00:10:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:51,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:51,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:10:51,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933945020] [2021-11-21 00:10:51,112 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:10:51,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:10:51,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:10:51,118 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:10:51,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 00:10:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:51,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-21 00:10:51,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:10:51,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-11-21 00:10:51,182 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 11 treesize of output 7 [2021-11-21 00:10:51,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-21 00:10:51,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:51,243 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 36 treesize of output 38 [2021-11-21 00:10:51,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:51,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:51,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:51,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 00:10:51,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:51,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:51,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:51,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 47 [2021-11-21 00:10:51,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:51,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:51,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:51,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:10:51,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:51,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 115 [2021-11-21 00:10:51,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:51,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:51,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:10:51,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 52 [2021-11-21 00:10:51,542 INFO L354 Elim1Store]: treesize reduction 114, result has 16.2 percent of original size [2021-11-21 00:10:51,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 60 treesize of output 49 [2021-11-21 00:10:51,593 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-21 00:10:51,594 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 6 case distinctions, treesize of input 70 treesize of output 46 [2021-11-21 00:10:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:10:51,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:11:39,527 WARN L227 SmtUtils]: Spent 16.09s on a formula simplification that was a NOOP. DAG size: 102 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:12:03,139 WARN L227 SmtUtils]: Spent 14.72s on a formula simplification that was a NOOP. DAG size: 103 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:12:58,944 WARN L227 SmtUtils]: Spent 22.28s on a formula simplification that was a NOOP. DAG size: 149 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:13:11,888 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse38 (let ((.cse39 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse39) 5) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse39 4) 5)))) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse38))) (let ((.cse13 (select .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse6 (select .cse38 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse31 (* .cse6 .cse8)) (.cse14 (+ .cse8 .cse6)) (.cse37 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse7 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse14)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse37)) (.cse15 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse17 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse31)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse37))) (let ((.cse26 (= .cse17 5)) (.cse18 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse17 .cse31))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15)) (.cse0 (= 5 .cse7)) (.cse21 (= 5 .cse6)) (.cse23 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse8 .cse7 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (let ((.cse24 (= 5 .cse23)) (.cse16 (not .cse21)) (.cse25 (not .cse0)) (.cse22 (= .cse18 5)) (.cse20 (not .cse26)) (.cse5 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (.cse1 (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (or .cse0 (let ((.cse2 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse7 .cse14))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (let ((.cse9 (= 5 .cse2))) (and (or (let ((.cse3 (* .cse8 .cse7)) (.cse4 (* .cse6 .cse7))) (and (<= .cse1 (div (+ .cse2 .cse3 .cse4) 5)) (<= (div (+ (- 1) .cse2 .cse3 .cse4) 5) .cse5))) (not .cse9)) (or .cse9 (let ((.cse10 (* .cse8 .cse2 .cse7)) (.cse11 (* .cse2 .cse6 .cse7))) (and (<= .cse1 (div (+ .cse10 .cse11) 5)) (<= (div (+ .cse10 (- 1) .cse11) 5) .cse5))))))) .cse16) (or (let ((.cse19 (* .cse8 .cse6))) (and (<= (div (+ .cse17 (- 1) .cse18 .cse19) 5) .cse5) (<= .cse1 (div (+ .cse17 .cse18 .cse19) 5)))) .cse20 .cse21 (not .cse22)) (or (and (<= .cse1 (div (+ .cse8 .cse23 .cse7 .cse6) 5)) (<= (div (+ .cse8 (- 1) .cse23 .cse7 .cse6) 5) .cse5)) (not .cse24) .cse16 .cse25) (or .cse26 (let ((.cse28 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse17 .cse31))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (let ((.cse29 (= 5 .cse28))) (and (or (let ((.cse27 (* (- 1) .cse28 .cse8 .cse6 .cse17))) (and (<= (div .cse27 (- 5)) .cse1) (<= (+ 3 |c_ULTIMATE.start_main_~i~0#1|) (div (+ (- 1) .cse27) (- 5))))) .cse29) (or (not .cse29) (let ((.cse30 (* .cse8 .cse6 .cse17))) (and (<= (div (+ (- 1) .cse30 .cse28) 5) .cse5) (<= .cse1 (div (+ .cse30 .cse28) 5)))))))) .cse21) (or .cse24 (let ((.cse32 (* .cse8 .cse23)) (.cse33 (* .cse23 .cse7)) (.cse34 (* .cse6 .cse23))) (and (<= (div (+ (- 1) .cse32 .cse33 .cse34) 5) .cse5) (<= .cse1 (div (+ .cse32 .cse33 .cse34) 5)))) .cse16 .cse25) (or .cse22 .cse20 .cse21 (let ((.cse35 (* .cse18 .cse17)) (.cse36 (* .cse18 .cse8 .cse6))) (and (<= (div (+ (- 1) .cse35 .cse36) 5) .cse5) (<= .cse1 (div (+ .cse35 .cse36) 5)))))))))))))) is different from false [2021-11-21 00:14:32,001 WARN L227 SmtUtils]: Spent 38.68s on a formula simplification that was a NOOP. DAG size: 154 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:14:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-21 00:14:32,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:14:32,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967168348] [2021-11-21 00:14:32,117 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:14:32,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933945020] [2021-11-21 00:14:32,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933945020] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:14:32,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1465834212] [2021-11-21 00:14:32,120 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-21 00:14:32,120 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:14:32,120 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:14:32,120 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:14:32,121 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:14:32,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:14:32,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:14:32,240 INFO L354 Elim1Store]: treesize reduction 62, result has 35.4 percent of original size [2021-11-21 00:14:32,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 55 [2021-11-21 00:14:32,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:14:32,308 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 00:14:32,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2021-11-21 00:14:32,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:14:32,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:14:32,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:14:32,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:14:32,494 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-21 00:14:32,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-21 00:14:32,574 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 [2021-11-21 00:14:32,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:14:32,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-11-21 00:14:32,698 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 [2021-11-21 00:14:32,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:14:32,924 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-21 00:14:32,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-11-21 00:14:33,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:14:33,545 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-21 00:14:33,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2021-11-21 00:14:33,672 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:14:33,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-21 00:14:33,868 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:14:33,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-21 00:14:34,841 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:14:38,287 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:14:38,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:14:38,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-11-21 00:14:38,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379439381] [2021-11-21 00:14:38,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 00:14:38,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-21 00:14:38,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:14:38,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-21 00:14:38,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=396, Unknown=9, NotChecked=40, Total=506 [2021-11-21 00:14:38,289 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 19 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:15:23,464 WARN L227 SmtUtils]: Spent 26.21s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:15:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:15:23,468 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-11-21 00:15:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:15:23,469 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 00:15:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:15:23,470 INFO L225 Difference]: With dead ends: 21 [2021-11-21 00:15:23,470 INFO L226 Difference]: Without dead ends: 18 [2021-11-21 00:15:23,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 181.0s TimeCoverageRelationStatistics Valid=72, Invalid=473, Unknown=11, NotChecked=44, Total=600 [2021-11-21 00:15:23,471 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:15:23,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 111 Invalid, 0 Unknown, 12 Unchecked, 2.8s Time] [2021-11-21 00:15:23,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-21 00:15:23,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2021-11-21 00:15:23,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:15:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-21 00:15:23,478 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2021-11-21 00:15:23,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:15:23,479 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-21 00:15:23,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:15:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-21 00:15:23,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:15:23,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:15:23,480 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2021-11-21 00:15:23,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:15:23,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:15:23,693 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:15:23,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:15:23,694 INFO L85 PathProgramCache]: Analyzing trace with hash -740129540, now seen corresponding path program 8 times [2021-11-21 00:15:23,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:15:23,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245886731] [2021-11-21 00:15:23,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:15:23,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:15:23,705 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:15:23,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988452437] [2021-11-21 00:15:23,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:15:23,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:15:23,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:15:23,706 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:15:23,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 00:15:23,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 00:15:23,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:15:23,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 00:15:23,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:15:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:15:23,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:15:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:15:23,933 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:15:23,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245886731] [2021-11-21 00:15:23,933 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:15:23,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988452437] [2021-11-21 00:15:23,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988452437] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:15:23,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2118557187] [2021-11-21 00:15:23,935 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-21 00:15:23,935 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:15:23,935 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:15:23,935 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:15:23,936 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:15:24,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:24,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:24,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:24,103 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-21 00:15:24,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-21 00:15:24,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:24,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:24,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:15:24,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:24,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2021-11-21 00:15:24,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:24,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:24,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:24,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 27 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2021-11-21 00:15:24,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:24,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:24,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:24,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:24,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:24,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:15:24,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:15:24,679 INFO L354 Elim1Store]: treesize reduction 196, result has 17.6 percent of original size [2021-11-21 00:15:24,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 26 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 381 treesize of output 376 [2021-11-21 00:15:25,178 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 [2021-11-21 00:15:25,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:15:25,343 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-21 00:15:25,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-11-21 00:15:25,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:15:25,564 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-21 00:15:25,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2021-11-21 00:15:25,683 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:15:25,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-21 00:15:25,765 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:15:25,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-21 00:15:26,433 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:15:26,688 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:15:26,688 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:15:26,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-11-21 00:15:26,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267320125] [2021-11-21 00:15:26,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 00:15:26,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:15:26,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:15:26,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:15:26,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-11-21 00:15:26,690 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2021-11-21 00:15:26,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:15:26,815 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-11-21 00:15:26,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 00:15:26,816 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 00:15:26,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:15:26,816 INFO L225 Difference]: With dead ends: 26 [2021-11-21 00:15:26,817 INFO L226 Difference]: Without dead ends: 18 [2021-11-21 00:15:26,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-11-21 00:15:26,818 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:15:26,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:15:26,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-21 00:15:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2021-11-21 00:15:26,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:15:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-21 00:15:26,825 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 13 [2021-11-21 00:15:26,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:15:26,825 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-21 00:15:26,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2021-11-21 00:15:26,826 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-21 00:15:26,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:15:26,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:15:26,826 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2021-11-21 00:15:26,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 00:15:27,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:15:27,037 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:15:27,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:15:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash -197451106, now seen corresponding path program 9 times [2021-11-21 00:15:27,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:15:27,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555300460] [2021-11-21 00:15:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:15:27,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:15:27,047 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:15:27,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753894664] [2021-11-21 00:15:27,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:15:27,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:15:27,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:15:27,055 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:15:27,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 00:15:27,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:15:27,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:15:27,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 00:15:27,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:15:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:15:27,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:15:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:15:27,280 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:15:27,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555300460] [2021-11-21 00:15:27,280 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:15:27,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753894664] [2021-11-21 00:15:27,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753894664] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:15:27,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2080662449] [2021-11-21 00:15:27,282 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-21 00:15:27,283 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:15:27,283 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:15:27,283 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:15:27,283 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:15:27,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:27,383 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 00:15:27,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2021-11-21 00:15:27,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:27,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:27,487 INFO L354 Elim1Store]: treesize reduction 62, result has 35.4 percent of original size [2021-11-21 00:15:27,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 27 treesize of output 55 [2021-11-21 00:15:27,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:27,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:27,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:27,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:27,639 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-21 00:15:27,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-21 00:15:27,724 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 [2021-11-21 00:15:27,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:27,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-11-21 00:15:27,898 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 [2021-11-21 00:15:27,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:15:28,022 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-21 00:15:28,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-11-21 00:15:28,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:15:28,283 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-21 00:15:28,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2021-11-21 00:15:28,445 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:15:28,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-21 00:15:28,731 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-21 00:15:28,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-21 00:15:29,480 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:15:29,670 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:15:29,670 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:15:29,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-11-21 00:15:29,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874394494] [2021-11-21 00:15:29,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 00:15:29,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-21 00:15:29,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:15:29,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-21 00:15:29,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:15:29,672 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 15 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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) [2021-11-21 00:15:29,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:15:29,801 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-11-21 00:15:29,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:15:29,802 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 00:15:29,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:15:29,803 INFO L225 Difference]: With dead ends: 18 [2021-11-21 00:15:29,803 INFO L226 Difference]: Without dead ends: 15 [2021-11-21 00:15:29,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2021-11-21 00:15:29,804 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:15:29,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:15:29,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-21 00:15:29,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-21 00:15:29,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-11-21 00:15:29,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-21 00:15:29,811 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2021-11-21 00:15:29,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:15:29,812 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-21 00:15:29,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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) [2021-11-21 00:15:29,812 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-11-21 00:15:29,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 00:15:29,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:15:29,813 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2021-11-21 00:15:29,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-21 00:15:30,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-21 00:15:30,037 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:15:30,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:15:30,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1825908407, now seen corresponding path program 10 times [2021-11-21 00:15:30,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:15:30,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595485967] [2021-11-21 00:15:30,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:15:30,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:15:30,044 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:15:30,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377515481] [2021-11-21 00:15:30,059 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:15:30,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:15:30,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:15:30,060 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:15:30,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fcb82a9-5e0f-4380-8456-3e47af897756/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 00:15:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:15:30,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-21 00:15:30,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:15:30,125 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 [2021-11-21 00:15:30,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-11-21 00:15:30,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-21 00:15:30,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,170 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 31 treesize of output 33 [2021-11-21 00:15:30,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 43 treesize of output 48 [2021-11-21 00:15:30,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-21 00:15:30,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:15:30,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 140 [2021-11-21 00:15:30,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 31 [2021-11-21 00:15:30,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:15:30,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 146 [2021-11-21 00:15:30,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 64 [2021-11-21 00:15:30,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:15:30,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 154 [2021-11-21 00:15:30,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:15:30,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 98 [2021-11-21 00:15:30,981 INFO L354 Elim1Store]: treesize reduction 152, result has 16.0 percent of original size [2021-11-21 00:15:30,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 67 treesize of output 59 [2021-11-21 00:15:31,069 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-21 00:15:31,069 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 51 [2021-11-21 00:15:31,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:15:31,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:16:07,283 WARN L227 SmtUtils]: Spent 23.06s on a formula simplification that was a NOOP. DAG size: 110 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:16:47,123 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse42 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse42))) (.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (* 5 c_~N~0)) (.cse9 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse42)) (.cse13 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse42)) (.cse23 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse42 4)) (.cse3 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse24 (= .cse1 5))) (and (or (let ((.cse22 (+ .cse1 .cse3))) (let ((.cse4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse22)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse23))) (let ((.cse14 (= 5 .cse4))) (and (or (let ((.cse8 (+ .cse1 .cse3 .cse4))) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse8)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse13))) (let ((.cse10 (= 5 .cse2))) (and (or (let ((.cse5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse2 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (let ((.cse6 (= 5 .cse5))) (and (or (= .cse0 (+ (* .cse1 .cse2) (* .cse2 .cse3) (* .cse2 .cse4) .cse5)) (not .cse6)) (or (= (+ (* .cse1 .cse2 .cse5) (* .cse2 .cse5 .cse3) (* .cse2 .cse5 .cse4)) .cse0) .cse6)))) .cse10) (or (not .cse10) (let ((.cse11 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (let ((.cse12 (= 5 .cse11))) (and (or (= (+ .cse1 .cse11 .cse2 .cse3 .cse4) .cse0) (not .cse12)) (or (= .cse0 (+ (* .cse11 .cse4) (* .cse1 .cse11) (* .cse11 .cse3) (* .cse2 .cse11))) .cse12))))))))) (not .cse14)) (or (let ((.cse18 (* .cse4 .cse22))) (let ((.cse17 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse18)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse13))) (let ((.cse19 (= 5 .cse17))) (and (or (let ((.cse16 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse18 .cse17))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (let ((.cse15 (= 5 .cse16))) (and (or .cse15 (= .cse0 (+ (* .cse1 .cse16 .cse4) (* .cse16 .cse17) (* .cse16 .cse4 .cse3)))) (or (= (+ (* .cse1 .cse4) .cse17 (* .cse4 .cse3) .cse16) .cse0) (not .cse15))))) (not .cse19)) (or (let ((.cse21 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse17 .cse18))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (let ((.cse20 (= 5 .cse21))) (and (or (not .cse20) (= (+ (* .cse4 .cse3 .cse17) .cse21 (* .cse1 .cse4 .cse17)) .cse0)) (or .cse20 (= .cse0 (+ (* .cse4 .cse3 .cse17 .cse21) (* .cse1 .cse4 .cse17 .cse21))))))) .cse19))))) .cse14))))) (not .cse24)) (or (let ((.cse33 (* .cse1 .cse3))) (let ((.cse28 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse33)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse23))) (let ((.cse34 (= 5 .cse28))) (and (or (let ((.cse29 (* .cse28 .cse33))) (let ((.cse26 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse29)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse13))) (let ((.cse30 (= 5 .cse26))) (and (or (let ((.cse27 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse29 .cse26))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (let ((.cse25 (= 5 .cse27))) (and (or .cse25 (= (+ (* .cse26 .cse27) (* .cse1 .cse28 .cse3 .cse27)) .cse0)) (or (not .cse25) (= (+ .cse26 (* .cse1 .cse28 .cse3) .cse27) .cse0))))) (not .cse30)) (or .cse30 (let ((.cse32 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse26 .cse29))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (let ((.cse31 (= .cse32 5))) (and (or (not .cse31) (= .cse0 (+ .cse32 (* .cse1 .cse26 .cse28 .cse3)))) (or (= .cse0 (* .cse1 .cse26 .cse28 .cse32 .cse3)) .cse31))))))))) .cse34) (or (not .cse34) (let ((.cse38 (+ .cse33 .cse28))) (let ((.cse36 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse38)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse13))) (let ((.cse39 (= 5 .cse36))) (and (or (let ((.cse37 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse36 .cse38))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (let ((.cse35 (= .cse37 5))) (and (or .cse35 (= (+ (* .cse1 .cse36 .cse3 .cse37) (* .cse28 .cse36 .cse37)) .cse0)) (or (= (+ .cse37 (* .cse1 .cse36 .cse3) (* .cse28 .cse36)) .cse0) (not .cse35))))) .cse39) (or (not .cse39) (let ((.cse40 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse33 .cse36 .cse28))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse9))) (let ((.cse41 (= 5 .cse40))) (and (or (= (+ (* .cse40 .cse28) (* .cse40 .cse36) (* .cse1 .cse40 .cse3)) .cse0) .cse41) (or (= .cse0 (+ .cse40 .cse33 .cse36 .cse28)) (not .cse41))))))))))))))) .cse24))))) is different from true [2021-11-21 00:17:05,721 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse7 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (* 5 c_~N~0)) (.cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) (.cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse24 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse6 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse0 (= .cse7 5))) (and (or .cse0 (let ((.cse15 (* .cse7 .cse6))) (let ((.cse5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse15)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse24))) (let ((.cse16 (= 5 .cse5))) (and (or (let ((.cse9 (* .cse5 .cse15))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse9)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse11 (= 5 .cse3))) (and (or (let ((.cse4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse3 .cse9))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))) (let ((.cse1 (= 5 .cse4))) (and (or .cse1 (= .cse2 (* .cse3 .cse4 .cse5 .cse6 .cse7))) (or (not .cse1) (= .cse2 (+ (* .cse3 .cse5 .cse6 .cse7) .cse4)))))) .cse11) (or (not .cse11) (let ((.cse12 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse9))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))) (let ((.cse13 (= 5 .cse12))) (and (or (= .cse2 (+ (* .cse12 .cse5 .cse6 .cse7) (* .cse12 .cse3))) .cse13) (or (= (+ .cse3 (* .cse5 .cse6 .cse7) .cse12) .cse2) (not .cse13)))))))))) .cse16) (or (not .cse16) (let ((.cse23 (+ .cse15 .cse5))) (let ((.cse19 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse23)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse20 (= 5 .cse19))) (and (or (let ((.cse18 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse15 .cse19 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))) (let ((.cse17 (= .cse18 5))) (and (or .cse17 (= .cse2 (+ (* .cse18 .cse5) (* .cse18 .cse6 .cse7) (* .cse18 .cse19)))) (or (not .cse17) (= (+ .cse18 (* .cse6 .cse7) .cse19 .cse5) .cse2))))) (not .cse20)) (or .cse20 (let ((.cse21 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse19 .cse23))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))) (let ((.cse22 (= 5 .cse21))) (and (or (= (+ (* .cse6 .cse19 .cse7) (* .cse5 .cse19) .cse21) .cse2) (not .cse22)) (or .cse22 (= .cse2 (+ (* .cse21 .cse5 .cse19) (* .cse21 .cse6 .cse19 .cse7)))))))))))))))))) (or (let ((.cse34 (+ .cse7 .cse6))) (let ((.cse29 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse34)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse24))) (let ((.cse25 (= .cse29 5))) (and (or .cse25 (let ((.cse30 (* .cse29 .cse34))) (let ((.cse27 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse30)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse31 (= .cse27 5))) (and (or (let ((.cse28 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse27 .cse30))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))) (let ((.cse26 (= 5 .cse28))) (and (or (not .cse26) (= .cse2 (+ .cse27 .cse28 (* .cse6 .cse29) (* .cse29 .cse7)))) (or .cse26 (= .cse2 (+ (* .cse27 .cse28) (* .cse28 .cse29 .cse7) (* .cse28 .cse6 .cse29))))))) (not .cse31)) (or (let ((.cse32 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse27 .cse30))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))) (let ((.cse33 (= .cse32 5))) (and (or (= (+ .cse32 (* .cse27 .cse6 .cse29) (* .cse27 .cse29 .cse7)) .cse2) (not .cse33)) (or .cse33 (= (+ (* .cse27 .cse32 .cse29 .cse7) (* .cse27 .cse32 .cse6 .cse29)) .cse2))))) .cse31)))))) (or (not .cse25) (let ((.cse41 (+ .cse7 .cse29 .cse6))) (let ((.cse36 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse41)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse38 (= .cse36 5))) (and (or (let ((.cse35 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse29 .cse36 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))) (let ((.cse37 (= .cse35 5))) (and (or (= .cse2 (+ (* .cse35 .cse29) (* .cse35 .cse6) (* .cse35 .cse36) (* .cse35 .cse7))) .cse37) (or (= .cse2 (+ .cse7 .cse29 .cse35 .cse36 .cse6)) (not .cse37))))) (not .cse38)) (or .cse38 (let ((.cse40 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse36 .cse41))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10))) (let ((.cse39 (= 5 .cse40))) (and (or (not .cse39) (= .cse2 (+ (* .cse36 .cse6) (* .cse36 .cse29) (* .cse36 .cse7) .cse40))) (or .cse39 (= (+ (* .cse40 .cse36 .cse29) (* .cse40 .cse36 .cse7) (* .cse40 .cse36 .cse6)) .cse2))))))))))))))) (not .cse0))))) (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) is different from false [2021-11-21 00:18:23,850 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse85 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) 5))) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse85))) (let ((.cse12 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse7 (select .cse85 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse0 (= .cse7 5)) (.cse20 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse4 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (.cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) (.cse24 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse41 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse6 (select .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (and (or .cse0 (let ((.cse25 (* .cse7 .cse6))) (let ((.cse8 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse25)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse41))) (let ((.cse1 (= 5 .cse8))) (and (or .cse1 (let ((.cse13 (* .cse8 .cse25))) (let ((.cse5 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse13)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse24))) (let ((.cse15 (= 5 .cse5))) (and (or (let ((.cse3 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse5 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse9 (= 5 .cse3))) (and (or (let ((.cse2 (* .cse5 .cse6 .cse7 .cse8))) (and (<= (div (+ (- 1) .cse2 .cse3) 5) |c_ULTIMATE.start_main_~i~0#1|) (<= .cse4 (div (+ .cse2 .cse3) 5)))) (not .cse9)) (or (let ((.cse10 (* .cse5 .cse6 .cse7 .cse3 .cse8))) (and (<= (div (+ (- 1) .cse10) 5) |c_ULTIMATE.start_main_~i~0#1|) (<= .cse4 (div .cse10 5)))) .cse9)))) .cse15) (or (let ((.cse19 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse16 (= 5 .cse19))) (and (or .cse16 (let ((.cse17 (* .cse6 .cse7 .cse19 .cse8)) (.cse18 (* .cse5 .cse19))) (and (<= (div (+ (- 1) .cse17 .cse18) 5) |c_ULTIMATE.start_main_~i~0#1|) (<= .cse4 (div (+ .cse17 .cse18) 5))))) (or (let ((.cse21 (* (- 1) .cse5)) (.cse22 (* (- 1) .cse19)) (.cse23 (* (- 1) .cse6 .cse7 .cse8))) (and (<= .cse20 (div (+ (- 1) .cse21 .cse22 .cse23) (- 5))) (<= (div (+ .cse21 .cse22 .cse23) (- 5)) .cse4))) (not .cse16))))) (not .cse15))))))) (or (let ((.cse40 (+ .cse25 .cse8))) (let ((.cse29 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse40)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse24))) (let ((.cse33 (= .cse29 5))) (and (or (let ((.cse30 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse25 .cse29 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse31 (= .cse30 5))) (and (or (let ((.cse26 (* (- 1) .cse30 .cse8)) (.cse27 (* (- 1) .cse6 .cse7 .cse30)) (.cse28 (* (- 1) .cse29 .cse30))) (and (<= .cse20 (div (+ (- 1) .cse26 .cse27 .cse28) (- 5))) (<= (div (+ .cse26 .cse27 .cse28) (- 5)) .cse4))) .cse31) (or (let ((.cse32 (* .cse6 .cse7))) (and (<= .cse4 (div (+ .cse32 .cse29 .cse30 .cse8) 5)) (<= (div (+ (- 1) .cse32 .cse29 .cse30 .cse8) 5) |c_ULTIMATE.start_main_~i~0#1|))) (not .cse31))))) (not .cse33)) (or .cse33 (let ((.cse35 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse29 .cse40))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse37 (= 5 .cse35))) (and (or (let ((.cse34 (* .cse29 .cse8)) (.cse36 (* .cse29 .cse6 .cse7))) (and (<= .cse4 (div (+ .cse34 .cse35 .cse36) 5)) (<= (div (+ .cse34 (- 1) .cse35 .cse36) 5) |c_ULTIMATE.start_main_~i~0#1|))) (not .cse37)) (or (let ((.cse38 (* (- 1) .cse35 .cse29 .cse8)) (.cse39 (* (- 1) .cse35 .cse29 .cse6 .cse7))) (and (<= (div (+ .cse38 .cse39) (- 5)) .cse4) (<= .cse20 (div (+ (- 1) .cse38 .cse39) (- 5))))) .cse37))))))))) (not .cse1))))))) (or (not .cse0) (let ((.cse62 (+ .cse7 .cse6))) (let ((.cse47 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse62)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse41))) (let ((.cse42 (= 5 .cse47))) (and (or .cse42 (let ((.cse52 (* .cse47 .cse62))) (let ((.cse48 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse52)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse24))) (let ((.cse43 (= 5 .cse48))) (and (or .cse43 (let ((.cse46 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse48 .cse52))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse49 (= 5 .cse46))) (and (or (let ((.cse44 (* .cse7 .cse47 .cse48)) (.cse45 (* .cse6 .cse47 .cse48))) (and (<= .cse4 (div (+ .cse44 .cse45 .cse46) 5)) (<= (div (+ (- 1) .cse44 .cse45 .cse46) 5) |c_ULTIMATE.start_main_~i~0#1|))) (not .cse49)) (or (let ((.cse50 (* (- 1) .cse6 .cse47 .cse48 .cse46)) (.cse51 (* (- 1) .cse7 .cse47 .cse48 .cse46))) (and (<= .cse20 (div (+ (- 1) .cse50 .cse51) (- 5))) (<= (div (+ .cse50 .cse51) (- 5)) .cse4))) .cse49))))) (or (let ((.cse56 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse52 .cse48))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse57 (= .cse56 5))) (and (or (let ((.cse53 (* (- 1) .cse48 .cse56)) (.cse54 (* (- 1) .cse7 .cse47 .cse56)) (.cse55 (* (- 1) .cse6 .cse47 .cse56))) (and (<= .cse20 (div (+ (- 1) .cse53 .cse54 .cse55) (- 5))) (<= (div (+ .cse53 .cse54 .cse55) (- 5)) .cse4))) .cse57) (or (not .cse57) (let ((.cse58 (* (- 1) .cse56)) (.cse59 (* (- 1) .cse6 .cse47)) (.cse60 (* (- 1) .cse7 .cse47)) (.cse61 (* (- 1) .cse48))) (and (<= .cse20 (div (+ .cse58 .cse59 (- 1) .cse60 .cse61) (- 5))) (<= (div (+ .cse58 .cse59 .cse60 .cse61) (- 5)) .cse4))))))) (not .cse43))))))) (or (not .cse42) (let ((.cse73 (+ .cse7 .cse6 .cse47))) (let ((.cse67 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse73)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse24))) (let ((.cse63 (= 5 .cse67))) (and (or .cse63 (let ((.cse68 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse67 .cse73))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse69 (= 5 .cse68))) (and (or (let ((.cse64 (* (- 1) .cse67 .cse47 .cse68)) (.cse65 (* (- 1) .cse67 .cse6 .cse68)) (.cse66 (* (- 1) .cse67 .cse7 .cse68))) (and (<= .cse20 (div (+ (- 1) .cse64 .cse65 .cse66) (- 5))) (<= (div (+ .cse64 .cse65 .cse66) (- 5)) .cse4))) .cse69) (or (let ((.cse70 (* .cse67 .cse6)) (.cse71 (* .cse67 .cse7)) (.cse72 (* .cse67 .cse47))) (and (<= (div (+ .cse70 (- 1) .cse71 .cse68 .cse72) 5) |c_ULTIMATE.start_main_~i~0#1|) (<= .cse4 (div (+ .cse70 .cse71 .cse68 .cse72) 5)))) (not .cse69)))))) (or (not .cse63) (let ((.cse80 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse6 .cse67 .cse47))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse74 (= .cse80 5))) (and (or (not .cse74) (let ((.cse75 (* .cse47 (- 1))) (.cse76 (* .cse7 (- 1))) (.cse77 (* .cse67 (- 1))) (.cse78 (* .cse6 (- 1))) (.cse79 (* .cse80 (- 1)))) (and (<= (div (+ .cse75 .cse76 .cse77 .cse78 .cse79) (- 5)) .cse4) (<= .cse20 (div (+ (- 1) .cse75 .cse76 .cse77 .cse78 .cse79) (- 5)))))) (or (let ((.cse81 (* .cse47 .cse80)) (.cse82 (* .cse7 .cse80)) (.cse83 (* .cse6 .cse80)) (.cse84 (* .cse67 .cse80))) (and (<= (div (+ .cse81 (- 1) .cse82 .cse83 .cse84) 5) |c_ULTIMATE.start_main_~i~0#1|) (<= .cse4 (div (+ .cse81 .cse82 .cse83 .cse84) 5)))) .cse74)))))))))))))))))))) is different from false [2021-11-21 00:18:25,862 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse85 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) 5))) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse85))) (let ((.cse12 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse7 (select .cse85 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse0 (= .cse7 5)) (.cse20 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse4 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (.cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) (.cse24 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse41 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse6 (select .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (and (or .cse0 (let ((.cse25 (* .cse7 .cse6))) (let ((.cse8 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse25)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse41))) (let ((.cse1 (= 5 .cse8))) (and (or .cse1 (let ((.cse13 (* .cse8 .cse25))) (let ((.cse5 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse13)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse24))) (let ((.cse15 (= 5 .cse5))) (and (or (let ((.cse3 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse5 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse9 (= 5 .cse3))) (and (or (let ((.cse2 (* .cse5 .cse6 .cse7 .cse8))) (and (<= (div (+ (- 1) .cse2 .cse3) 5) |c_ULTIMATE.start_main_~i~0#1|) (<= .cse4 (div (+ .cse2 .cse3) 5)))) (not .cse9)) (or (let ((.cse10 (* .cse5 .cse6 .cse7 .cse3 .cse8))) (and (<= (div (+ (- 1) .cse10) 5) |c_ULTIMATE.start_main_~i~0#1|) (<= .cse4 (div .cse10 5)))) .cse9)))) .cse15) (or (let ((.cse19 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse16 (= 5 .cse19))) (and (or .cse16 (let ((.cse17 (* .cse6 .cse7 .cse19 .cse8)) (.cse18 (* .cse5 .cse19))) (and (<= (div (+ (- 1) .cse17 .cse18) 5) |c_ULTIMATE.start_main_~i~0#1|) (<= .cse4 (div (+ .cse17 .cse18) 5))))) (or (let ((.cse21 (* (- 1) .cse5)) (.cse22 (* (- 1) .cse19)) (.cse23 (* (- 1) .cse6 .cse7 .cse8))) (and (<= .cse20 (div (+ (- 1) .cse21 .cse22 .cse23) (- 5))) (<= (div (+ .cse21 .cse22 .cse23) (- 5)) .cse4))) (not .cse16))))) (not .cse15))))))) (or (let ((.cse40 (+ .cse25 .cse8))) (let ((.cse29 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse40)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse24))) (let ((.cse33 (= .cse29 5))) (and (or (let ((.cse30 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse25 .cse29 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse31 (= .cse30 5))) (and (or (let ((.cse26 (* (- 1) .cse30 .cse8)) (.cse27 (* (- 1) .cse6 .cse7 .cse30)) (.cse28 (* (- 1) .cse29 .cse30))) (and (<= .cse20 (div (+ (- 1) .cse26 .cse27 .cse28) (- 5))) (<= (div (+ .cse26 .cse27 .cse28) (- 5)) .cse4))) .cse31) (or (let ((.cse32 (* .cse6 .cse7))) (and (<= .cse4 (div (+ .cse32 .cse29 .cse30 .cse8) 5)) (<= (div (+ (- 1) .cse32 .cse29 .cse30 .cse8) 5) |c_ULTIMATE.start_main_~i~0#1|))) (not .cse31))))) (not .cse33)) (or .cse33 (let ((.cse35 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse29 .cse40))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse37 (= 5 .cse35))) (and (or (let ((.cse34 (* .cse29 .cse8)) (.cse36 (* .cse29 .cse6 .cse7))) (and (<= .cse4 (div (+ .cse34 .cse35 .cse36) 5)) (<= (div (+ .cse34 (- 1) .cse35 .cse36) 5) |c_ULTIMATE.start_main_~i~0#1|))) (not .cse37)) (or (let ((.cse38 (* (- 1) .cse35 .cse29 .cse8)) (.cse39 (* (- 1) .cse35 .cse29 .cse6 .cse7))) (and (<= (div (+ .cse38 .cse39) (- 5)) .cse4) (<= .cse20 (div (+ (- 1) .cse38 .cse39) (- 5))))) .cse37))))))))) (not .cse1))))))) (or (not .cse0) (let ((.cse62 (+ .cse7 .cse6))) (let ((.cse47 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse62)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse41))) (let ((.cse42 (= 5 .cse47))) (and (or .cse42 (let ((.cse52 (* .cse47 .cse62))) (let ((.cse48 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse52)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse24))) (let ((.cse43 (= 5 .cse48))) (and (or .cse43 (let ((.cse46 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse48 .cse52))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse49 (= 5 .cse46))) (and (or (let ((.cse44 (* .cse7 .cse47 .cse48)) (.cse45 (* .cse6 .cse47 .cse48))) (and (<= .cse4 (div (+ .cse44 .cse45 .cse46) 5)) (<= (div (+ (- 1) .cse44 .cse45 .cse46) 5) |c_ULTIMATE.start_main_~i~0#1|))) (not .cse49)) (or (let ((.cse50 (* (- 1) .cse6 .cse47 .cse48 .cse46)) (.cse51 (* (- 1) .cse7 .cse47 .cse48 .cse46))) (and (<= .cse20 (div (+ (- 1) .cse50 .cse51) (- 5))) (<= (div (+ .cse50 .cse51) (- 5)) .cse4))) .cse49))))) (or (let ((.cse56 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse52 .cse48))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse57 (= .cse56 5))) (and (or (let ((.cse53 (* (- 1) .cse48 .cse56)) (.cse54 (* (- 1) .cse7 .cse47 .cse56)) (.cse55 (* (- 1) .cse6 .cse47 .cse56))) (and (<= .cse20 (div (+ (- 1) .cse53 .cse54 .cse55) (- 5))) (<= (div (+ .cse53 .cse54 .cse55) (- 5)) .cse4))) .cse57) (or (not .cse57) (let ((.cse58 (* (- 1) .cse56)) (.cse59 (* (- 1) .cse6 .cse47)) (.cse60 (* (- 1) .cse7 .cse47)) (.cse61 (* (- 1) .cse48))) (and (<= .cse20 (div (+ .cse58 .cse59 (- 1) .cse60 .cse61) (- 5))) (<= (div (+ .cse58 .cse59 .cse60 .cse61) (- 5)) .cse4))))))) (not .cse43))))))) (or (not .cse42) (let ((.cse73 (+ .cse7 .cse6 .cse47))) (let ((.cse67 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse73)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse24))) (let ((.cse63 (= 5 .cse67))) (and (or .cse63 (let ((.cse68 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (* .cse67 .cse73))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse69 (= 5 .cse68))) (and (or (let ((.cse64 (* (- 1) .cse67 .cse47 .cse68)) (.cse65 (* (- 1) .cse67 .cse6 .cse68)) (.cse66 (* (- 1) .cse67 .cse7 .cse68))) (and (<= .cse20 (div (+ (- 1) .cse64 .cse65 .cse66) (- 5))) (<= (div (+ .cse64 .cse65 .cse66) (- 5)) .cse4))) .cse69) (or (let ((.cse70 (* .cse67 .cse6)) (.cse71 (* .cse67 .cse7)) (.cse72 (* .cse67 .cse47))) (and (<= (div (+ .cse70 (- 1) .cse71 .cse68 .cse72) 5) |c_ULTIMATE.start_main_~i~0#1|) (<= .cse4 (div (+ .cse70 .cse71 .cse68 .cse72) 5)))) (not .cse69)))))) (or (not .cse63) (let ((.cse80 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse6 .cse67 .cse47))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14))) (let ((.cse74 (= .cse80 5))) (and (or (not .cse74) (let ((.cse75 (* .cse47 (- 1))) (.cse76 (* .cse7 (- 1))) (.cse77 (* .cse67 (- 1))) (.cse78 (* .cse6 (- 1))) (.cse79 (* .cse80 (- 1)))) (and (<= (div (+ .cse75 .cse76 .cse77 .cse78 .cse79) (- 5)) .cse4) (<= .cse20 (div (+ (- 1) .cse75 .cse76 .cse77 .cse78 .cse79) (- 5)))))) (or (let ((.cse81 (* .cse47 .cse80)) (.cse82 (* .cse7 .cse80)) (.cse83 (* .cse6 .cse80)) (.cse84 (* .cse67 .cse80))) (and (<= (div (+ .cse81 (- 1) .cse82 .cse83 .cse84) 5) |c_ULTIMATE.start_main_~i~0#1|) (<= .cse4 (div (+ .cse81 .cse82 .cse83 .cse84) 5)))) .cse74)))))))))))))))))))) is different from true