./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/nested-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/nested-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG --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 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:12:31,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:12:31,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:12:31,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:12:31,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:12:31,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:12:31,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:12:31,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:12:31,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:12:31,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:12:31,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:12:31,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:12:31,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:12:31,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:12:31,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:12:31,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:12:31,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:12:31,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:12:31,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:12:31,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:12:31,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:12:31,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:12:31,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:12:31,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:12:31,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:12:31,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:12:31,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:12:31,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:12:31,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:12:31,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:12:31,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:12:31,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:12:31,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:12:31,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:12:31,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:12:31,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:12:31,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:12:31,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:12:31,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:12:31,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:12:31,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:12:31,191 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:12:31,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:12:31,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:12:31,263 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:12:31,264 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:12:31,265 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:12:31,265 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:12:31,265 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:12:31,266 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:12:31,273 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:12:31,273 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:12:31,274 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:12:31,274 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:12:31,274 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:12:31,275 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:12:31,275 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:12:31,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:12:31,276 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:12:31,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:12:31,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:12:31,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:12:31,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:12:31,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:12:31,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:12:31,278 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:12:31,278 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:12:31,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:12:31,279 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:12:31,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:12:31,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:12:31,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:12:31,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:12:31,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:12:31,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:12:31,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:12:31,281 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:12:31,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:12:31,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:12:31,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:12:31,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:12:31,282 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_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a [2021-10-29 05:12:31,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:12:31,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:12:31,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:12:31,606 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:12:31,607 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:12:31,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/loop-new/nested-1.i [2021-10-29 05:12:31,692 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/data/cac766e98/5ac85a3125624d35882bc2e0bec1692b/FLAGc1570dd9f [2021-10-29 05:12:32,149 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:12:32,149 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/sv-benchmarks/c/loop-new/nested-1.i [2021-10-29 05:12:32,155 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/data/cac766e98/5ac85a3125624d35882bc2e0bec1692b/FLAGc1570dd9f [2021-10-29 05:12:32,527 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/data/cac766e98/5ac85a3125624d35882bc2e0bec1692b [2021-10-29 05:12:32,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:12:32,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:12:32,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:12:32,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:12:32,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:12:32,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:12:32" (1/1) ... [2021-10-29 05:12:32,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@645367ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:32, skipping insertion in model container [2021-10-29 05:12:32,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:12:32" (1/1) ... [2021-10-29 05:12:32,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:12:32,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:12:32,741 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-10-29 05:12:32,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:12:32,758 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:12:32,771 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-10-29 05:12:32,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:12:32,789 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:12:32,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:32 WrapperNode [2021-10-29 05:12:32,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:12:32,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:12:32,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:12:32,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:12:32,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:32" (1/1) ... [2021-10-29 05:12:32,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:32" (1/1) ... [2021-10-29 05:12:32,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:12:32,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:12:32,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:12:32,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:12:32,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:32" (1/1) ... [2021-10-29 05:12:32,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:32" (1/1) ... [2021-10-29 05:12:32,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:32" (1/1) ... [2021-10-29 05:12:32,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:32" (1/1) ... [2021-10-29 05:12:32,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:32" (1/1) ... [2021-10-29 05:12:32,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:32" (1/1) ... [2021-10-29 05:12:32,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:32" (1/1) ... [2021-10-29 05:12:32,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:12:32,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:12:32,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:12:32,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:12:32,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:32" (1/1) ... [2021-10-29 05:12:32,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:12:32,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:12:32,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:12:32,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:12:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:12:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:12:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:12:32,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:12:33,157 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:12:33,158 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-29 05:12:33,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:12:33 BoogieIcfgContainer [2021-10-29 05:12:33,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:12:33,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:12:33,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:12:33,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:12:33,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:12:32" (1/3) ... [2021-10-29 05:12:33,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f03b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:12:33, skipping insertion in model container [2021-10-29 05:12:33,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:32" (2/3) ... [2021-10-29 05:12:33,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f03b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:12:33, skipping insertion in model container [2021-10-29 05:12:33,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:12:33" (3/3) ... [2021-10-29 05:12:33,189 INFO L111 eAbstractionObserver]: Analyzing ICFG nested-1.i [2021-10-29 05:12:33,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:12:33,195 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:12:33,245 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:12:33,252 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 [2021-10-29 05:12:33,253 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:12:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:33,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:12:33,271 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:33,272 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:12:33,272 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:33,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:33,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1854609309, now seen corresponding path program 1 times [2021-10-29 05:12:33,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:33,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657669040] [2021-10-29 05:12:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:33,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:12:33,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:33,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657669040] [2021-10-29 05:12:33,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657669040] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:33,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:12:33,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:12:33,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464665257] [2021-10-29 05:12:33,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:12:33,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:33,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:12:33,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:12:33,536 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-29 05:12:33,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:33,606 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2021-10-29 05:12:33,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:12:33,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2021-10-29 05:12:33,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:33,624 INFO L225 Difference]: With dead ends: 21 [2021-10-29 05:12:33,625 INFO L226 Difference]: Without dead ends: 10 [2021-10-29 05:12:33,630 INFO L786 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 [2021-10-29 05:12:33,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-29 05:12:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-10-29 05:12:33,665 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) [2021-10-29 05:12:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-29 05:12:33,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-10-29 05:12:33,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:33,667 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-29 05:12:33,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-29 05:12:33,668 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-29 05:12:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:12:33,669 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:33,669 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:12:33,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:12:33,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:33,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:33,678 INFO L85 PathProgramCache]: Analyzing trace with hash 96357918, now seen corresponding path program 1 times [2021-10-29 05:12:33,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:33,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163893796] [2021-10-29 05:12:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:33,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:12:33,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:33,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163893796] [2021-10-29 05:12:33,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163893796] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:33,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:12:33,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:12:33,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42371166] [2021-10-29 05:12:33,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:12:33,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:33,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:12:33,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:12:33,794 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:33,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:33,814 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-10-29 05:12:33,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:12:33,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:12:33,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:33,815 INFO L225 Difference]: With dead ends: 15 [2021-10-29 05:12:33,815 INFO L226 Difference]: Without dead ends: 10 [2021-10-29 05:12:33,816 INFO L786 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 [2021-10-29 05:12:33,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-29 05:12:33,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-29 05:12:33,818 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) [2021-10-29 05:12:33,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-29 05:12:33,819 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2021-10-29 05:12:33,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:33,819 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-29 05:12:33,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:33,820 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-29 05:12:33,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:12:33,820 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:33,821 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:12:33,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:12:33,821 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:33,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:33,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1311608225, now seen corresponding path program 1 times [2021-10-29 05:12:33,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:33,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526818982] [2021-10-29 05:12:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:33,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:12:33,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:33,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526818982] [2021-10-29 05:12:33,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526818982] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:12:33,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326995690] [2021-10-29 05:12:33,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:33,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:33,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:12:33,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:12:33,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:12:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:34,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:12:34,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:12:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:12:34,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:12:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:12:34,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326995690] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:12:34,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [910461594] [2021-10-29 05:12:34,197 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-29 05:12:34,197 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:12:34,202 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:12:34,208 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:12:34,208 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:12:34,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:34,246 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:12:34,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:34,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 05:12:34,251 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:12:34,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:34,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 05:12:34,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-10-29 05:12:34,277 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-10-29 05:12:34,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:34,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:12:34,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:34,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:12:34,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:34,302 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:12:34,303 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:12:34,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,326 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:34,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:34,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:34,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:34,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:34,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:12:34,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:34,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:12:34,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:34,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:12:34,350 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:12:34,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,378 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:34,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:34,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-29 05:12:34,398 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:12:34,398 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:105, output treesize:90 [2021-10-29 05:12:34,428 INFO L180 QuantifierPusher]: treesize reduction 16, result has 87.2 percent of original size [2021-10-29 05:12:34,441 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size 95 [2021-10-29 05:12:34,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,636 INFO L180 QuantifierPusher]: treesize reduction 16, result has 94.0 percent of original size [2021-10-29 05:12:34,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-10-29 05:12:34,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,793 INFO L180 QuantifierPusher]: treesize reduction 30, result has 65.5 percent of original size [2021-10-29 05:12:34,797 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 05:12:34,807 INFO L180 QuantifierPusher]: treesize reduction 31, result has 62.7 percent of original size [2021-10-29 05:12:34,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 05:12:34,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,876 INFO L180 QuantifierPusher]: treesize reduction 13, result has 92.9 percent of original size [2021-10-29 05:12:34,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-10-29 05:12:34,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:34,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-10-29 05:12:34,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:34,985 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:34,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 05:12:34,998 INFO L180 QuantifierPusher]: treesize reduction 25, result has 68.8 percent of original size [2021-10-29 05:12:35,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:12:35,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,041 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:35,065 INFO L185 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-10-29 05:12:35,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,122 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size [2021-10-29 05:12:35,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-10-29 05:12:35,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,174 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:35,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 05:12:35,185 INFO L180 QuantifierPusher]: treesize reduction 25, result has 68.8 percent of original size [2021-10-29 05:12:35,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:12:35,200 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:35,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 05:12:35,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:35,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-10-29 05:12:35,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:35,287 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:35,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 05:12:35,293 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:12:35,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:12:35,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:12:35,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-10-29 05:12:35,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935171759] [2021-10-29 05:12:35,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:12:35,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:35,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:12:35,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-29 05:12:35,940 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 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) [2021-10-29 05:12:36,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:36,020 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2021-10-29 05:12:36,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:12:36,021 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 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) Word has length 9 [2021-10-29 05:12:36,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:36,022 INFO L225 Difference]: With dead ends: 19 [2021-10-29 05:12:36,023 INFO L226 Difference]: Without dead ends: 13 [2021-10-29 05:12:36,025 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-29 05:12:36,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-29 05:12:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-29 05:12:36,032 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) [2021-10-29 05:12:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-29 05:12:36,034 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2021-10-29 05:12:36,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:36,034 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-29 05:12:36,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 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) [2021-10-29 05:12:36,035 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-29 05:12:36,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:12:36,036 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:36,036 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:12:36,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:12:36,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:36,259 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:36,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:36,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2076563038, now seen corresponding path program 2 times [2021-10-29 05:12:36,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:36,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260841986] [2021-10-29 05:12:36,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:36,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:12:36,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:36,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260841986] [2021-10-29 05:12:36,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260841986] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:12:36,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313823822] [2021-10-29 05:12:36,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:12:36,348 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:36,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:12:36,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:12:36,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:12:36,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-29 05:12:36,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:12:36,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:12:36,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:12:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-29 05:12:36,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:12:36,587 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-29 05:12:36,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313823822] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:12:36,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2092323236] [2021-10-29 05:12:36,590 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-29 05:12:36,590 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:12:36,591 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:12:36,591 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:12:36,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:12:36,597 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:36,598 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:12:36,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:36,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 05:12:36,600 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:12:36,601 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:36,601 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 05:12:36,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-10-29 05:12:36,607 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 10=[|v_#valid_10|]} [2021-10-29 05:12:36,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:36,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:12:36,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:36,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:12:36,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:36,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:12:36,618 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:12:36,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,627 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:36,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:36,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:36,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:36,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:36,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:12:36,642 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:36,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:12:36,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:36,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:12:36,647 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:12:36,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,651 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:36,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:36,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-29 05:12:36,656 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:12:36,656 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:105, output treesize:90 [2021-10-29 05:12:36,671 INFO L180 QuantifierPusher]: treesize reduction 16, result has 87.2 percent of original size [2021-10-29 05:12:36,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-10-29 05:12:36,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,746 INFO L180 QuantifierPusher]: treesize reduction 13, result has 95.2 percent of original size [2021-10-29 05:12:36,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 255 [2021-10-29 05:12:36,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,835 INFO L180 QuantifierPusher]: treesize reduction 30, result has 65.5 percent of original size [2021-10-29 05:12:36,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 05:12:36,842 INFO L180 QuantifierPusher]: treesize reduction 31, result has 62.7 percent of original size [2021-10-29 05:12:36,844 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-10-29 05:12:36,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,887 INFO L180 QuantifierPusher]: treesize reduction 16, result has 91.4 percent of original size [2021-10-29 05:12:36,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-10-29 05:12:36,899 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:36,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-10-29 05:12:36,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,951 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:36,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 05:12:36,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:36,982 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:36,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 05:12:36,988 INFO L180 QuantifierPusher]: treesize reduction 25, result has 68.8 percent of original size [2021-10-29 05:12:36,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:12:36,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,027 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:37,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 05:12:37,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,060 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:37,066 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-10-29 05:12:37,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,096 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:37,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 05:12:37,102 INFO L180 QuantifierPusher]: treesize reduction 25, result has 68.8 percent of original size [2021-10-29 05:12:37,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:12:37,113 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:37,115 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 05:12:37,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,147 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:37,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-10-29 05:12:37,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:37,189 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:37,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 05:12:37,194 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:12:37,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:12:37,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:12:37,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2021-10-29 05:12:37,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005343661] [2021-10-29 05:12:37,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 05:12:37,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:37,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 05:12:37,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-29 05:12:37,763 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:38,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:38,291 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2021-10-29 05:12:38,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-29 05:12:38,291 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:12:38,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:38,292 INFO L225 Difference]: With dead ends: 44 [2021-10-29 05:12:38,292 INFO L226 Difference]: Without dead ends: 35 [2021-10-29 05:12:38,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=537, Invalid=1443, Unknown=0, NotChecked=0, Total=1980 [2021-10-29 05:12:38,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-29 05:12:38,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-29 05:12:38,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-10-29 05:12:38,309 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 12 [2021-10-29 05:12:38,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:38,309 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-29 05:12:38,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:38,310 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-10-29 05:12:38,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-29 05:12:38,312 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:38,312 INFO L513 BasicCegarLoop]: trace histogram [20, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-29 05:12:38,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:12:38,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:38,527 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:38,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:38,527 INFO L85 PathProgramCache]: Analyzing trace with hash -481775261, now seen corresponding path program 3 times [2021-10-29 05:12:38,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:38,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583493553] [2021-10-29 05:12:38,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:38,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-10-29 05:12:38,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:38,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583493553] [2021-10-29 05:12:38,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583493553] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:12:38,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898161361] [2021-10-29 05:12:38,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 05:12:38,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:38,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:12:38,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:12:38,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 05:12:38,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 05:12:38,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:12:38,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 05:12:38,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:12:38,851 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-10-29 05:12:38,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:12:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-10-29 05:12:38,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898161361] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:12:38,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [26984902] [2021-10-29 05:12:38,987 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-29 05:12:38,987 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:12:38,988 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:12:38,988 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:12:38,989 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:12:38,999 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,001 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:12:39,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 05:12:39,003 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:12:39,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 05:12:39,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-10-29 05:12:39,020 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 10=[|v_#valid_11|]} [2021-10-29 05:12:39,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:39,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:12:39,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,029 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:12:39,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:12:39,031 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:12:39,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,034 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:39,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:39,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:39,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:39,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:12:39,053 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:12:39,057 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:12:39,058 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:12:39,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,061 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,062 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-29 05:12:39,064 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:12:39,064 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:105, output treesize:90 [2021-10-29 05:12:39,072 INFO L180 QuantifierPusher]: treesize reduction 16, result has 87.2 percent of original size [2021-10-29 05:12:39,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-10-29 05:12:39,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,124 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.1 percent of original size [2021-10-29 05:12:39,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-10-29 05:12:39,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,186 INFO L180 QuantifierPusher]: treesize reduction 30, result has 65.5 percent of original size [2021-10-29 05:12:39,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 05:12:39,192 INFO L180 QuantifierPusher]: treesize reduction 31, result has 62.7 percent of original size [2021-10-29 05:12:39,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-10-29 05:12:39,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,234 INFO L180 QuantifierPusher]: treesize reduction 16, result has 91.4 percent of original size [2021-10-29 05:12:39,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-10-29 05:12:39,246 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-10-29 05:12:39,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,291 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-10-29 05:12:39,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-29 05:12:39,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,332 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:39,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 05:12:39,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,367 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-10-29 05:12:39,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,397 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:39,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 05:12:39,403 INFO L180 QuantifierPusher]: treesize reduction 25, result has 68.8 percent of original size [2021-10-29 05:12:39,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:12:39,411 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:39,413 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 05:12:39,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:39,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-10-29 05:12:39,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,474 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:39,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 05:12:39,478 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:12:39,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:12:39,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:12:39,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-10-29 05:12:39,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303766839] [2021-10-29 05:12:39,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-29 05:12:39,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:39,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-29 05:12:39,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2021-10-29 05:12:39,977 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:40,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:40,077 INFO L93 Difference]: Finished difference Result 80 states and 107 transitions. [2021-10-29 05:12:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-29 05:12:40,077 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 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 34 [2021-10-29 05:12:40,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:40,078 INFO L225 Difference]: With dead ends: 80 [2021-10-29 05:12:40,079 INFO L226 Difference]: Without dead ends: 55 [2021-10-29 05:12:40,079 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=623, Unknown=0, NotChecked=0, Total=870 [2021-10-29 05:12:40,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-29 05:12:40,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-29 05:12:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-10-29 05:12:40,094 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 34 [2021-10-29 05:12:40,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:40,094 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-29 05:12:40,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:40,095 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-10-29 05:12:40,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-29 05:12:40,099 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:40,100 INFO L513 BasicCegarLoop]: trace histogram [40, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-29 05:12:40,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:12:40,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-10-29 05:12:40,319 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:40,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:40,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1382072015, now seen corresponding path program 4 times [2021-10-29 05:12:40,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:40,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927471556] [2021-10-29 05:12:40,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:40,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 736 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-10-29 05:12:40,532 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:40,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927471556] [2021-10-29 05:12:40,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927471556] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:12:40,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431401748] [2021-10-29 05:12:40,533 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 05:12:40,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:40,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:12:40,535 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:12:40,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 05:12:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:40,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:12:40,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:12:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 736 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-10-29 05:12:40,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:12:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 736 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-10-29 05:12:41,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431401748] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:12:41,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [591579972] [2021-10-29 05:12:41,180 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-29 05:12:41,181 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:12:41,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:12:41,181 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:12:41,181 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:12:41,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:41,188 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:12:41,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:41,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 05:12:41,189 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:12:41,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:41,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 05:12:41,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-10-29 05:12:41,195 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 10=[|v_#valid_12|]} [2021-10-29 05:12:41,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:41,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:12:41,203 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:41,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:12:41,204 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:41,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:12:41,204 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:12:41,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,207 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:41,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:41,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:41,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:41,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:12:41,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:12:41,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:41,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:12:41,220 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:41,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:12:41,221 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:12:41,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,223 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:41,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:41,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-29 05:12:41,227 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:12:41,227 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:105, output treesize:90 [2021-10-29 05:12:41,234 INFO L180 QuantifierPusher]: treesize reduction 16, result has 87.2 percent of original size [2021-10-29 05:12:41,237 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size 95 [2021-10-29 05:12:41,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,280 INFO L180 QuantifierPusher]: treesize reduction 16, result has 94.0 percent of original size [2021-10-29 05:12:41,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-10-29 05:12:41,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,347 INFO L180 QuantifierPusher]: treesize reduction 30, result has 65.5 percent of original size [2021-10-29 05:12:41,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 05:12:41,353 INFO L180 QuantifierPusher]: treesize reduction 31, result has 62.7 percent of original size [2021-10-29 05:12:41,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 05:12:41,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,386 INFO L180 QuantifierPusher]: treesize reduction 13, result has 92.9 percent of original size [2021-10-29 05:12:41,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-10-29 05:12:41,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:41,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-10-29 05:12:41,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:41,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-10-29 05:12:41,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:41,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-29 05:12:41,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,496 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:41,499 INFO L185 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-10-29 05:12:41,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,534 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size [2021-10-29 05:12:41,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-10-29 05:12:41,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,564 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:41,566 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 05:12:41,569 INFO L180 QuantifierPusher]: treesize reduction 25, result has 68.8 percent of original size [2021-10-29 05:12:41,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:12:41,578 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:41,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-29 05:12:41,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,605 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:12:41,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-10-29 05:12:41,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:41,636 INFO L180 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-10-29 05:12:41,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 05:12:41,640 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:12:42,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:12:42,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:12:42,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2021-10-29 05:12:42,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829847446] [2021-10-29 05:12:42,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-29 05:12:42,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:42,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-29 05:12:42,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2021-10-29 05:12:42,123 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:42,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:42,288 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2021-10-29 05:12:42,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-29 05:12:42,288 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 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 54 [2021-10-29 05:12:42,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:42,292 INFO L225 Difference]: With dead ends: 130 [2021-10-29 05:12:42,293 INFO L226 Difference]: Without dead ends: 127 [2021-10-29 05:12:42,294 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=249, Invalid=621, Unknown=0, NotChecked=0, Total=870 [2021-10-29 05:12:42,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-29 05:12:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-29 05:12:42,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0873015873015872) internal successors, (137), 126 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:42,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-10-29 05:12:42,322 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 54 [2021-10-29 05:12:42,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:42,323 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-10-29 05:12:42,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:42,323 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-10-29 05:12:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-10-29 05:12:42,327 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:42,327 INFO L513 BasicCegarLoop]: trace histogram [100, 10, 10, 1, 1, 1, 1, 1, 1] [2021-10-29 05:12:42,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:12:42,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2021-10-29 05:12:42,555 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:42,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:42,555 INFO L85 PathProgramCache]: Analyzing trace with hash -10858127, now seen corresponding path program 5 times [2021-10-29 05:12:42,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:42,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460302884] [2021-10-29 05:12:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:42,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 5922 proven. 119 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-29 05:12:46,922 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:46,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460302884] [2021-10-29 05:12:46,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460302884] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:12:46,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388498635] [2021-10-29 05:12:46,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:12:46,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:46,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:12:46,924 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:12:46,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 05:12:47,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2021-10-29 05:12:47,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:12:47,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-29 05:12:47,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:12:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 6041 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-29 05:12:47,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:12:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 6041 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-29 05:12:48,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388498635] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:48,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:12:48,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103, 103] imperfect sequences [103] total 105 [2021-10-29 05:12:48,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459799480] [2021-10-29 05:12:48,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-10-29 05:12:48,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:48,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-10-29 05:12:48,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2021-10-29 05:12:48,272 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 104 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 103 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:49,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:49,437 INFO L93 Difference]: Finished difference Result 5122 states and 5582 transitions. [2021-10-29 05:12:49,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-29 05:12:49,437 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 103 states have internal predecessors, (126), 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 126 [2021-10-29 05:12:49,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:49,438 INFO L225 Difference]: With dead ends: 5122 [2021-10-29 05:12:49,438 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:12:49,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5366, Invalid=5976, Unknown=0, NotChecked=0, Total=11342 [2021-10-29 05:12:49,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:12:49,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:12:49,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:49,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:12:49,454 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2021-10-29 05:12:49,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:49,455 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:12:49,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 103 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:49,455 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:12:49,455 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:12:49,458 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:12:49,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:12:49,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:49,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:12:49,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:49,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:13:28,050 WARN L207 SmtUtils]: Spent 38.34 s on a formula simplification. DAG size of input: 4903 DAG size of output: 1178 [2021-10-29 05:13:28,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:13:28,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:13:55,019 WARN L207 SmtUtils]: Spent 25.81 s on a formula simplification. DAG size of input: 1178 DAG size of output: 347 [2021-10-29 05:13:59,978 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:13:59,979 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-29 05:13:59,979 INFO L853 garLoopResultBuilder]: At program point L31-3(lines 31 35) the Hoare annotation is: (let ((.cse0 (<= 10 ULTIMATE.start_main_~m~0)) (.cse1 (<= 10 ULTIMATE.start_main_~n~0))) (or (and .cse0 .cse1 (<= 60 ULTIMATE.start_main_~k~0) (< (+ ULTIMATE.start_main_~i~0 3) ULTIMATE.start_main_~n~0)) (and .cse0 .cse1 (<= 100 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= 80 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 20 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 2)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 4) (<= 40 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 90 ULTIMATE.start_main_~k~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0)) (and .cse0 (<= 0 ULTIMATE.start_main_~k~0) .cse1 (= ULTIMATE.start_main_~i~0 0)) (and .cse0 (< (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~n~0) .cse1 (<= 70 ULTIMATE.start_main_~k~0)) (and .cse0 (<= ULTIMATE.start_main_~i~0 1) .cse1 (<= 10 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (< (+ ULTIMATE.start_main_~i~0 4) ULTIMATE.start_main_~n~0) (<= 50 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 30 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 3)))) [2021-10-29 05:13:59,979 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-29 05:13:59,979 INFO L857 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2021-10-29 05:13:59,979 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:13:59,980 INFO L853 garLoopResultBuilder]: At program point L32-3(lines 32 34) the Hoare annotation is: (let ((.cse2 (<= 20 ULTIMATE.start_main_~k~0)) (.cse24 (<= 80 ULTIMATE.start_main_~k~0)) (.cse21 (<= 30 ULTIMATE.start_main_~k~0)) (.cse26 (<= 50 ULTIMATE.start_main_~k~0)) (.cse29 (<= 90 ULTIMATE.start_main_~k~0)) (.cse28 (<= 10 ULTIMATE.start_main_~k~0)) (.cse14 (<= ULTIMATE.start_main_~j~0 5)) (.cse11 (<= ULTIMATE.start_main_~j~0 3)) (.cse16 (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0)) (.cse17 (<= 40 ULTIMATE.start_main_~k~0)) (.cse30 (<= 60 ULTIMATE.start_main_~k~0)) (.cse5 (< (+ ULTIMATE.start_main_~i~0 3) ULTIMATE.start_main_~n~0)) (.cse19 (<= ULTIMATE.start_main_~j~0 1)) (.cse8 (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~m~0)) (.cse22 (< (+ ULTIMATE.start_main_~i~0 4) ULTIMATE.start_main_~n~0)) (.cse13 (< (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~n~0)) (.cse23 (<= 70 ULTIMATE.start_main_~k~0)) (.cse4 (= ULTIMATE.start_main_~j~0 0)) (.cse25 (<= ULTIMATE.start_main_~i~0 4)) (.cse15 (< (+ ULTIMATE.start_main_~j~0 2) ULTIMATE.start_main_~m~0)) (.cse6 (< (+ ULTIMATE.start_main_~j~0 3) ULTIMATE.start_main_~m~0)) (.cse3 (<= ULTIMATE.start_main_~i~0 2)) (.cse20 (= ULTIMATE.start_main_~i~0 0)) (.cse7 (<= ULTIMATE.start_main_~i~0 1)) (.cse27 (<= ULTIMATE.start_main_~j~0 2)) (.cse9 (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0)) (.cse12 (< (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~m~0)) (.cse0 (<= 10 ULTIMATE.start_main_~m~0)) (.cse1 (<= 10 ULTIMATE.start_main_~n~0)) (.cse18 (<= ULTIMATE.start_main_~i~0 3)) (.cse10 (<= ULTIMATE.start_main_~j~0 4))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse5 .cse6 (<= 66 ULTIMATE.start_main_~k~0)) (and .cse0 .cse7 .cse8 .cse1 (<= 19 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 84 ULTIMATE.start_main_~k~0) .cse9 .cse10) (and .cse0 .cse7 .cse1 .cse11 (<= 13 ULTIMATE.start_main_~k~0)) (and .cse0 .cse7 .cse1 (<= 18 ULTIMATE.start_main_~k~0) .cse12) (and .cse0 .cse7 .cse1 (<= 14 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 .cse13 .cse1 (<= 75 ULTIMATE.start_main_~k~0) .cse14) (and .cse0 .cse13 .cse1 (<= 77 ULTIMATE.start_main_~k~0) .cse15) (and .cse0 .cse1 .cse16 (<= 94 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 .cse1 (<= 97 ULTIMATE.start_main_~k~0) .cse15 .cse16) (and .cse0 .cse1 (<= 93 ULTIMATE.start_main_~k~0) .cse16 .cse11) (and .cse0 .cse7 .cse1 .cse6 (<= 16 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse17 .cse18) (and .cse0 .cse19 .cse13 .cse1 (<= 71 ULTIMATE.start_main_~k~0)) (and (<= 36 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse6 .cse18) (and .cse0 .cse1 (<= 3 ULTIMATE.start_main_~k~0) .cse11 .cse20) (and .cse0 .cse1 .cse21 .cse18 .cse4) (and .cse0 .cse1 .cse22 (<= 58 ULTIMATE.start_main_~k~0) .cse12) (and .cse0 .cse1 .cse14 (<= 85 ULTIMATE.start_main_~k~0) .cse9) (and .cse0 .cse1 .cse23 .cse5) (and .cse0 .cse1 .cse9 .cse4 .cse24) (and .cse0 .cse19 .cse1 .cse9 (<= 81 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse25 .cse26) (and .cse0 .cse7 .cse1 .cse14 (<= 15 ULTIMATE.start_main_~k~0)) (and .cse0 .cse19 .cse1 .cse25 (<= 41 ULTIMATE.start_main_~k~0)) (and .cse0 .cse19 .cse1 (<= 21 ULTIMATE.start_main_~k~0) .cse3) (and .cse0 .cse1 (<= 25 ULTIMATE.start_main_~k~0) .cse14 .cse3) (and .cse0 .cse1 (<= 83 ULTIMATE.start_main_~k~0) .cse11 .cse9) (and .cse0 .cse1 (<= 82 ULTIMATE.start_main_~k~0) .cse27 .cse9) (and .cse0 .cse7 .cse1 .cse28 .cse4) (and .cse0 .cse1 .cse15 (<= 37 ULTIMATE.start_main_~k~0) .cse18) (and .cse0 .cse8 .cse1 .cse25 (<= 49 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse25 .cse27 (<= 42 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 68 ULTIMATE.start_main_~k~0) .cse5 .cse12) (and .cse0 .cse7 .cse1 .cse15 (<= 17 ULTIMATE.start_main_~k~0)) (and .cse0 .cse13 .cse1 (<= 78 ULTIMATE.start_main_~k~0) .cse12) (and .cse0 .cse1 .cse5 .cse27 (<= 62 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse11 (<= 33 ULTIMATE.start_main_~k~0) .cse18) (and .cse0 .cse1 .cse6 (<= 6 ULTIMATE.start_main_~k~0) .cse20) (and .cse0 .cse1 (<= 98 ULTIMATE.start_main_~k~0) .cse16 .cse12) (and .cse0 .cse7 .cse1 .cse2) (and .cse0 (<= 0 ULTIMATE.start_main_~k~0) .cse1 .cse20 .cse4) (and (<= 8 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse20 .cse12) (and .cse0 .cse13 .cse1 .cse24) (and .cse0 .cse1 (<= 5 ULTIMATE.start_main_~k~0) .cse14 .cse20) (and .cse0 .cse1 .cse25 (<= 44 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 (<= 53 ULTIMATE.start_main_~k~0) .cse1 .cse22 .cse11) (and .cse0 .cse1 .cse22 (<= 54 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 .cse1 (<= 23 ULTIMATE.start_main_~k~0) .cse11 .cse3) (and .cse0 .cse19 .cse1 (<= 1 ULTIMATE.start_main_~k~0) .cse20) (and .cse0 .cse1 .cse22 .cse27 (<= 52 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 65 ULTIMATE.start_main_~k~0) .cse5 .cse14) (and .cse0 .cse1 .cse29 .cse9) (and .cse0 .cse1 .cse30 .cse22) (and .cse0 .cse1 .cse14 .cse18 (<= 35 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse21 .cse3) (and .cse0 .cse19 .cse1 .cse18 (<= 31 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 96 ULTIMATE.start_main_~k~0) .cse16 .cse6) (and .cse0 .cse1 .cse15 .cse3 (<= 27 ULTIMATE.start_main_~k~0)) (and .cse0 .cse8 .cse1 (<= 89 ULTIMATE.start_main_~k~0) .cse9) (and .cse0 (<= 92 ULTIMATE.start_main_~k~0) .cse1 .cse16 .cse27) (and .cse0 .cse8 .cse1 (<= 69 ULTIMATE.start_main_~k~0) .cse5) (and .cse0 .cse1 .cse22 .cse26 .cse4) (and .cse0 .cse1 .cse25 .cse11 (<= 43 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 79 ULTIMATE.start_main_~k~0) .cse8 .cse13 .cse1) (and .cse0 .cse1 .cse25 .cse6 (<= 46 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 63 ULTIMATE.start_main_~k~0) .cse1 .cse5 .cse11) (and .cse0 .cse1 (<= 38 ULTIMATE.start_main_~k~0) .cse18 .cse12) (and .cse0 .cse8 .cse1 (<= 59 ULTIMATE.start_main_~k~0) .cse22) (and .cse0 .cse1 .cse22 (<= 56 ULTIMATE.start_main_~k~0) .cse6) (and .cse0 .cse1 .cse29 .cse16 .cse4) (and .cse0 .cse19 .cse1 (<= 61 ULTIMATE.start_main_~k~0) .cse5) (and .cse0 .cse19 .cse1 .cse22 (<= 51 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse15 (<= 7 ULTIMATE.start_main_~k~0) .cse20) (and .cse0 .cse1 (<= 32 ULTIMATE.start_main_~k~0) .cse18 .cse27) (and .cse0 .cse1 (<= 2 ULTIMATE.start_main_~k~0) .cse20 .cse27) (and (<= 87 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse15 .cse9) (and .cse0 .cse8 .cse1 .cse16 (<= 99 ULTIMATE.start_main_~k~0)) (and .cse0 .cse19 .cse1 (<= 91 ULTIMATE.start_main_~k~0) .cse16) (and .cse0 .cse8 .cse1 (<= 39 ULTIMATE.start_main_~k~0) .cse18) (and .cse0 .cse1 (<= 55 ULTIMATE.start_main_~k~0) .cse22 .cse14) (and .cse0 .cse1 .cse6 (<= 86 ULTIMATE.start_main_~k~0) .cse9) (and .cse0 .cse1 .cse25 .cse14 (<= 45 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 22 ULTIMATE.start_main_~k~0) .cse3 .cse27) (and .cse0 .cse1 (<= 28 ULTIMATE.start_main_~k~0) .cse3 .cse12) (and .cse0 .cse1 .cse20 .cse28) (and .cse0 .cse8 .cse1 (<= 9 ULTIMATE.start_main_~k~0) .cse20) (and .cse0 .cse1 .cse16 .cse14 (<= 95 ULTIMATE.start_main_~k~0)) (and .cse0 .cse13 .cse1 .cse11 (<= 73 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 100 ULTIMATE.start_main_~k~0) .cse16) (and .cse0 .cse13 .cse1 (<= 74 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 .cse1 .cse5 .cse15 (<= 67 ULTIMATE.start_main_~k~0)) (and .cse0 .cse13 .cse1 (<= 72 ULTIMATE.start_main_~k~0) .cse27) (and .cse0 .cse1 .cse25 .cse17 .cse4) (and .cse0 .cse1 (<= 48 ULTIMATE.start_main_~k~0) .cse25 .cse12) (and .cse0 .cse1 .cse30 .cse5 .cse4) (and .cse0 .cse1 .cse5 (<= 64 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 .cse13 .cse1 .cse6 (<= 76 ULTIMATE.start_main_~k~0)) (and .cse0 .cse7 .cse19 .cse1 (<= 11 ULTIMATE.start_main_~k~0)) (and (<= 29 ULTIMATE.start_main_~k~0) .cse0 .cse8 .cse1 .cse3) (and .cse0 .cse1 (<= 57 ULTIMATE.start_main_~k~0) .cse22 .cse15) (and .cse0 .cse13 .cse1 .cse23 .cse4) (and .cse0 .cse1 .cse25 .cse15 (<= 47 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 24 ULTIMATE.start_main_~k~0) .cse3 .cse10) (and .cse0 .cse1 .cse6 .cse3 (<= 26 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 4 ULTIMATE.start_main_~k~0) .cse1 .cse20 .cse10) (and .cse0 .cse7 .cse1 (<= 12 ULTIMATE.start_main_~k~0) .cse27) (and .cse0 .cse1 (<= 88 ULTIMATE.start_main_~k~0) .cse9 .cse12) (and .cse0 .cse1 .cse18 .cse10 (<= 34 ULTIMATE.start_main_~k~0)))) [2021-10-29 05:13:59,981 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-29 05:13:59,981 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-29 05:13:59,981 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (<= 10 ULTIMATE.start_main_~n~0) [2021-10-29 05:13:59,982 INFO L860 garLoopResultBuilder]: At program point L37(lines 24 38) the Hoare annotation is: true [2021-10-29 05:13:59,985 INFO L731 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2021-10-29 05:13:59,986 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:14:00,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:14:00 BoogieIcfgContainer [2021-10-29 05:14:00,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:14:00,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:14:00,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:14:00,073 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:14:00,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:12:33" (3/4) ... [2021-10-29 05:14:00,077 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:14:00,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-29 05:14:00,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-29 05:14:00,088 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:14:00,088 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:14:00,134 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:14:00,134 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:14:00,135 INFO L168 Benchmark]: Toolchain (without parser) took 87603.20 ms. Allocated memory was 100.7 MB in the beginning and 2.6 GB in the end (delta: 2.5 GB). Free memory was 67.8 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. [2021-10-29 05:14:00,135 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory is still 53.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:14:00,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.63 ms. Allocated memory is still 100.7 MB. Free memory was 67.5 MB in the beginning and 75.1 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:14:00,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.80 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 73.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:14:00,140 INFO L168 Benchmark]: Boogie Preprocessor took 21.25 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 72.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:14:00,141 INFO L168 Benchmark]: RCFGBuilder took 312.92 ms. Allocated memory is still 100.7 MB. Free memory was 72.7 MB in the beginning and 61.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:14:00,141 INFO L168 Benchmark]: TraceAbstraction took 86909.81 ms. Allocated memory was 100.7 MB in the beginning and 2.6 GB in the end (delta: 2.5 GB). Free memory was 61.4 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.4 GB. Max. memory is 16.1 GB. [2021-10-29 05:14:00,142 INFO L168 Benchmark]: Witness Printer took 61.36 ms. Allocated memory is still 2.6 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:14:00,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory is still 53.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.63 ms. Allocated memory is still 100.7 MB. Free memory was 67.5 MB in the beginning and 75.1 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.80 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 73.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.25 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 72.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 312.92 ms. Allocated memory is still 100.7 MB. Free memory was 72.7 MB in the beginning and 61.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 86909.81 ms. Allocated memory was 100.7 MB in the beginning and 2.6 GB in the end (delta: 2.5 GB). Free memory was 61.4 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.4 GB. Max. memory is 16.1 GB. * Witness Printer took 61.36 ms. Allocated memory is still 2.6 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 86.7s, OverallIterations: 7, TraceHistogramMax: 100, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 70.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 230 SDtfs, 309 SDslu, 892 SDs, 0 SdLazy, 695 SolverSat, 137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 747 GetRequests, 521 SyntacticMatches, 2 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1799 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=6, InterpolantAutomatonStates: 173, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 5123 NumberOfFragments, 2032 HoareAnnotationTreeSize, 4 FomulaSimplifications, 136435 FormulaSimplificationTreeSizeReduction, 39.5s HoareSimplificationTime, 4 FomulaSimplificationsInter, 22713 FormulaSimplificationTreeSizeReductionInter, 30.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 484 NumberOfCodeBlocks, 478 NumberOfCodeBlocksAsserted, 73 NumberOfCheckSat, 702 ConstructedInterpolants, 0 QuantifiedInterpolants, 2397 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1144 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 19529/21916 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 10 <= n - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((10 <= m && 10 <= n) && 20 <= k) && i <= 2) && j == 0) || ((((10 <= m && 10 <= n) && i + 3 < n) && j + 3 < m) && 66 <= k)) || ((((10 <= m && i <= 1) && j < m) && 10 <= n) && 19 <= k)) || ((((10 <= m && 10 <= n) && 84 <= k) && i + 1 < n) && j <= 4)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 3) && 13 <= k)) || ((((10 <= m && i <= 1) && 10 <= n) && 18 <= k) && j + 1 < m)) || ((((10 <= m && i <= 1) && 10 <= n) && 14 <= k) && j <= 4)) || ((((10 <= m && i + 2 < n) && 10 <= n) && 75 <= k) && j <= 5)) || ((((10 <= m && i + 2 < n) && 10 <= n) && 77 <= k) && j + 2 < m)) || ((((10 <= m && 10 <= n) && i < n) && 94 <= k) && j <= 4)) || ((((10 <= m && 10 <= n) && 97 <= k) && j + 2 < m) && i < n)) || ((((10 <= m && 10 <= n) && 93 <= k) && i < n) && j <= 3)) || ((((10 <= m && i <= 1) && 10 <= n) && j + 3 < m) && 16 <= k)) || (((10 <= m && 10 <= n) && 40 <= k) && i <= 3)) || ((((10 <= m && j <= 1) && i + 2 < n) && 10 <= n) && 71 <= k)) || ((((36 <= k && 10 <= m) && 10 <= n) && j + 3 < m) && i <= 3)) || ((((10 <= m && 10 <= n) && 3 <= k) && j <= 3) && i == 0)) || ((((10 <= m && 10 <= n) && 30 <= k) && i <= 3) && j == 0)) || ((((10 <= m && 10 <= n) && i + 4 < n) && 58 <= k) && j + 1 < m)) || ((((10 <= m && 10 <= n) && j <= 5) && 85 <= k) && i + 1 < n)) || (((10 <= m && 10 <= n) && 70 <= k) && i + 3 < n)) || ((((10 <= m && 10 <= n) && i + 1 < n) && j == 0) && 80 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i + 1 < n) && 81 <= k)) || (((10 <= m && 10 <= n) && i <= 4) && 50 <= k)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 5) && 15 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 4) && 41 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && 21 <= k) && i <= 2)) || ((((10 <= m && 10 <= n) && 25 <= k) && j <= 5) && i <= 2)) || ((((10 <= m && 10 <= n) && 83 <= k) && j <= 3) && i + 1 < n)) || ((((10 <= m && 10 <= n) && 82 <= k) && j <= 2) && i + 1 < n)) || ((((10 <= m && i <= 1) && 10 <= n) && 10 <= k) && j == 0)) || ((((10 <= m && 10 <= n) && j + 2 < m) && 37 <= k) && i <= 3)) || ((((10 <= m && j < m) && 10 <= n) && i <= 4) && 49 <= k)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 2) && 42 <= k)) || ((((10 <= m && 10 <= n) && 68 <= k) && i + 3 < n) && j + 1 < m)) || ((((10 <= m && i <= 1) && 10 <= n) && j + 2 < m) && 17 <= k)) || ((((10 <= m && i + 2 < n) && 10 <= n) && 78 <= k) && j + 1 < m)) || ((((10 <= m && 10 <= n) && i + 3 < n) && j <= 2) && 62 <= k)) || ((((10 <= m && 10 <= n) && j <= 3) && 33 <= k) && i <= 3)) || ((((10 <= m && 10 <= n) && j + 3 < m) && 6 <= k) && i == 0)) || ((((10 <= m && 10 <= n) && 98 <= k) && i < n) && j + 1 < m)) || (((10 <= m && i <= 1) && 10 <= n) && 20 <= k)) || ((((10 <= m && 0 <= k) && 10 <= n) && i == 0) && j == 0)) || ((((8 <= k && 10 <= m) && 10 <= n) && i == 0) && j + 1 < m)) || (((10 <= m && i + 2 < n) && 10 <= n) && 80 <= k)) || ((((10 <= m && 10 <= n) && 5 <= k) && j <= 5) && i == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && 44 <= k) && j <= 4)) || ((((10 <= m && 53 <= k) && 10 <= n) && i + 4 < n) && j <= 3)) || ((((10 <= m && 10 <= n) && i + 4 < n) && 54 <= k) && j <= 4)) || ((((10 <= m && 10 <= n) && 23 <= k) && j <= 3) && i <= 2)) || ((((10 <= m && j <= 1) && 10 <= n) && 1 <= k) && i == 0)) || ((((10 <= m && 10 <= n) && i + 4 < n) && j <= 2) && 52 <= k)) || ((((10 <= m && 10 <= n) && 65 <= k) && i + 3 < n) && j <= 5)) || (((10 <= m && 10 <= n) && 90 <= k) && i + 1 < n)) || (((10 <= m && 10 <= n) && 60 <= k) && i + 4 < n)) || ((((10 <= m && 10 <= n) && j <= 5) && i <= 3) && 35 <= k)) || (((10 <= m && 10 <= n) && 30 <= k) && i <= 2)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 3) && 31 <= k)) || ((((10 <= m && 10 <= n) && 96 <= k) && i < n) && j + 3 < m)) || ((((10 <= m && 10 <= n) && j + 2 < m) && i <= 2) && 27 <= k)) || ((((10 <= m && j < m) && 10 <= n) && 89 <= k) && i + 1 < n)) || ((((10 <= m && 92 <= k) && 10 <= n) && i < n) && j <= 2)) || ((((10 <= m && j < m) && 10 <= n) && 69 <= k) && i + 3 < n)) || ((((10 <= m && 10 <= n) && i + 4 < n) && 50 <= k) && j == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 3) && 43 <= k)) || ((((10 <= m && 79 <= k) && j < m) && i + 2 < n) && 10 <= n)) || ((((10 <= m && 10 <= n) && i <= 4) && j + 3 < m) && 46 <= k)) || ((((10 <= m && 63 <= k) && 10 <= n) && i + 3 < n) && j <= 3)) || ((((10 <= m && 10 <= n) && 38 <= k) && i <= 3) && j + 1 < m)) || ((((10 <= m && j < m) && 10 <= n) && 59 <= k) && i + 4 < n)) || ((((10 <= m && 10 <= n) && i + 4 < n) && 56 <= k) && j + 3 < m)) || ((((10 <= m && 10 <= n) && 90 <= k) && i < n) && j == 0)) || ((((10 <= m && j <= 1) && 10 <= n) && 61 <= k) && i + 3 < n)) || ((((10 <= m && j <= 1) && 10 <= n) && i + 4 < n) && 51 <= k)) || ((((10 <= m && 10 <= n) && j + 2 < m) && 7 <= k) && i == 0)) || ((((10 <= m && 10 <= n) && 32 <= k) && i <= 3) && j <= 2)) || ((((10 <= m && 10 <= n) && 2 <= k) && i == 0) && j <= 2)) || ((((87 <= k && 10 <= m) && 10 <= n) && j + 2 < m) && i + 1 < n)) || ((((10 <= m && j < m) && 10 <= n) && i < n) && 99 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && 91 <= k) && i < n)) || ((((10 <= m && j < m) && 10 <= n) && 39 <= k) && i <= 3)) || ((((10 <= m && 10 <= n) && 55 <= k) && i + 4 < n) && j <= 5)) || ((((10 <= m && 10 <= n) && j + 3 < m) && 86 <= k) && i + 1 < n)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 5) && 45 <= k)) || ((((10 <= m && 10 <= n) && 22 <= k) && i <= 2) && j <= 2)) || ((((10 <= m && 10 <= n) && 28 <= k) && i <= 2) && j + 1 < m)) || (((10 <= m && 10 <= n) && i == 0) && 10 <= k)) || ((((10 <= m && j < m) && 10 <= n) && 9 <= k) && i == 0)) || ((((10 <= m && 10 <= n) && i < n) && j <= 5) && 95 <= k)) || ((((10 <= m && i + 2 < n) && 10 <= n) && j <= 3) && 73 <= k)) || (((10 <= m && 10 <= n) && 100 <= k) && i < n)) || ((((10 <= m && i + 2 < n) && 10 <= n) && 74 <= k) && j <= 4)) || ((((10 <= m && 10 <= n) && i + 3 < n) && j + 2 < m) && 67 <= k)) || ((((10 <= m && i + 2 < n) && 10 <= n) && 72 <= k) && j <= 2)) || ((((10 <= m && 10 <= n) && i <= 4) && 40 <= k) && j == 0)) || ((((10 <= m && 10 <= n) && 48 <= k) && i <= 4) && j + 1 < m)) || ((((10 <= m && 10 <= n) && 60 <= k) && i + 3 < n) && j == 0)) || ((((10 <= m && 10 <= n) && i + 3 < n) && 64 <= k) && j <= 4)) || ((((10 <= m && i + 2 < n) && 10 <= n) && j + 3 < m) && 76 <= k)) || ((((10 <= m && i <= 1) && j <= 1) && 10 <= n) && 11 <= k)) || ((((29 <= k && 10 <= m) && j < m) && 10 <= n) && i <= 2)) || ((((10 <= m && 10 <= n) && 57 <= k) && i + 4 < n) && j + 2 < m)) || ((((10 <= m && i + 2 < n) && 10 <= n) && 70 <= k) && j == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && j + 2 < m) && 47 <= k)) || ((((10 <= m && 10 <= n) && 24 <= k) && i <= 2) && j <= 4)) || ((((10 <= m && 10 <= n) && j + 3 < m) && i <= 2) && 26 <= k)) || ((((10 <= m && 4 <= k) && 10 <= n) && i == 0) && j <= 4)) || ((((10 <= m && i <= 1) && 10 <= n) && 12 <= k) && j <= 2)) || ((((10 <= m && 10 <= n) && 88 <= k) && i + 1 < n) && j + 1 < m)) || ((((10 <= m && 10 <= n) && i <= 3) && j <= 4) && 34 <= k) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((((((((((((10 <= m && 10 <= n) && 60 <= k) && i + 3 < n) || ((10 <= m && 10 <= n) && 100 <= k)) || (((10 <= m && 10 <= n) && i + 1 < n) && 80 <= k)) || (((10 <= m && 10 <= n) && 20 <= k) && i <= 2)) || (((10 <= m && 10 <= n) && i <= 4) && 40 <= k)) || (((10 <= m && 10 <= n) && 90 <= k) && i < n)) || (((10 <= m && 0 <= k) && 10 <= n) && i == 0)) || (((10 <= m && i + 2 < n) && 10 <= n) && 70 <= k)) || (((10 <= m && i <= 1) && 10 <= n) && 10 <= k)) || (((10 <= m && 10 <= n) && i + 4 < n) && 50 <= k)) || (((10 <= m && 10 <= n) && 30 <= k) && i <= 3) RESULT: Ultimate proved your program to be correct! [2021-10-29 05:14:00,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9768d7-b1b8-4b4e-bcc9-41fd9eaf1246/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...