./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH --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 f5161832faa85efa7698287d22f9a23de4fa8b958c1b2d2c225d3d8c999a24ce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:18:35,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:18:35,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:18:35,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:18:35,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:18:35,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:18:35,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:18:35,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:18:35,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:18:35,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:18:35,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:18:35,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:18:35,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:18:35,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:18:35,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:18:35,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:18:35,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:18:35,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:18:35,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:18:35,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:18:35,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:18:35,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:18:35,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:18:35,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:18:35,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:18:35,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:18:35,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:18:35,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:18:35,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:18:35,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:18:35,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:18:35,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:18:35,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:18:35,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:18:35,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:18:35,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:18:35,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:18:35,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:18:35,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:18:35,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:18:35,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:18:35,563 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:18:35,619 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:18:35,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:18:35,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:18:35,623 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:18:35,624 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:18:35,624 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:18:35,624 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:18:35,624 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:18:35,625 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:18:35,625 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:18:35,626 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:18:35,627 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:18:35,627 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:18:35,627 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:18:35,628 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:18:35,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:18:35,629 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:18:35,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:18:35,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:18:35,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:18:35,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:18:35,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:18:35,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:18:35,631 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:18:35,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:18:35,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:18:35,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:18:35,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:18:35,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:18:35,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:18:35,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:18:35,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:18:35,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:18:35,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:18:35,636 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:18:35,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:18:35,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:18:35,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:18:35,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:18:35,638 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_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5161832faa85efa7698287d22f9a23de4fa8b958c1b2d2c225d3d8c999a24ce [2021-11-03 05:18:35,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:18:35,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:18:35,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:18:35,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:18:35,982 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:18:35,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound100.c [2021-11-03 05:18:36,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/data/654a7230b/ffba9a313c3748a08432029c021fd275/FLAG53fcaaf81 [2021-11-03 05:18:36,721 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:18:36,725 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound100.c [2021-11-03 05:18:36,738 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/data/654a7230b/ffba9a313c3748a08432029c021fd275/FLAG53fcaaf81 [2021-11-03 05:18:37,057 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/data/654a7230b/ffba9a313c3748a08432029c021fd275 [2021-11-03 05:18:37,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:18:37,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:18:37,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:18:37,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:18:37,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:18:37,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:18:37" (1/1) ... [2021-11-03 05:18:37,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3190e401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:37, skipping insertion in model container [2021-11-03 05:18:37,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:18:37" (1/1) ... [2021-11-03 05:18:37,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:18:37,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:18:37,347 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_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound100.c[489,502] [2021-11-03 05:18:37,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:18:37,386 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:18:37,412 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_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound100.c[489,502] [2021-11-03 05:18:37,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:18:37,455 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:18:37,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:37 WrapperNode [2021-11-03 05:18:37,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:18:37,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:18:37,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:18:37,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:18:37,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:37" (1/1) ... [2021-11-03 05:18:37,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:37" (1/1) ... [2021-11-03 05:18:37,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:18:37,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:18:37,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:18:37,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:18:37,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:37" (1/1) ... [2021-11-03 05:18:37,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:37" (1/1) ... [2021-11-03 05:18:37,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:37" (1/1) ... [2021-11-03 05:18:37,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:37" (1/1) ... [2021-11-03 05:18:37,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:37" (1/1) ... [2021-11-03 05:18:37,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:37" (1/1) ... [2021-11-03 05:18:37,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:37" (1/1) ... [2021-11-03 05:18:37,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:18:37,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:18:37,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:18:37,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:18:37,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:37" (1/1) ... [2021-11-03 05:18:37,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:18:37,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:18:37,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:18:37,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:18:37,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:18:37,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:18:37,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:18:37,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:18:38,314 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:18:38,315 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-11-03 05:18:38,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:18:38 BoogieIcfgContainer [2021-11-03 05:18:38,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:18:38,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:18:38,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:18:38,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:18:38,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:18:37" (1/3) ... [2021-11-03 05:18:38,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6546b8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:18:38, skipping insertion in model container [2021-11-03 05:18:38,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:37" (2/3) ... [2021-11-03 05:18:38,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6546b8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:18:38, skipping insertion in model container [2021-11-03 05:18:38,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:18:38" (3/3) ... [2021-11-03 05:18:38,336 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound100.c [2021-11-03 05:18:38,343 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:18:38,343 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-03 05:18:38,414 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:18:38,426 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:18:38,427 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-03 05:18:38,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 25 states have (on average 1.68) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:38,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:18:38,461 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:38,462 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:18:38,463 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 05:18:38,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:38,485 INFO L85 PathProgramCache]: Analyzing trace with hash 150261929, now seen corresponding path program 1 times [2021-11-03 05:18:38,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:38,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296237767] [2021-11-03 05:18:38,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:38,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:38,647 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:18:38,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178383774] [2021-11-03 05:18:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:38,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:38,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:18:38,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:18:38,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 05:18:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:38,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:18:38,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:18:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:38,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:18:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:39,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:39,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296237767] [2021-11-03 05:18:39,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:18:39,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178383774] [2021-11-03 05:18:39,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178383774] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:39,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:39,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:18:39,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27436216] [2021-11-03 05:18:39,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:18:39,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:39,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:18:39,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:18:39,086 INFO L87 Difference]: Start difference. First operand has 33 states, 25 states have (on average 1.68) internal successors, (42), 32 states have internal predecessors, (42), 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 5 states, 5 states have (on average 1.6) 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) [2021-11-03 05:18:39,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:39,210 INFO L93 Difference]: Finished difference Result 93 states and 120 transitions. [2021-11-03 05:18:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:18:39,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) 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 5 [2021-11-03 05:18:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:39,223 INFO L225 Difference]: With dead ends: 93 [2021-11-03 05:18:39,224 INFO L226 Difference]: Without dead ends: 57 [2021-11-03 05:18:39,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:18:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-03 05:18:39,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2021-11-03 05:18:39,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.368421052631579) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2021-11-03 05:18:39,268 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 5 [2021-11-03 05:18:39,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:39,268 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2021-11-03 05:18:39,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) 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) [2021-11-03 05:18:39,269 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2021-11-03 05:18:39,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 05:18:39,270 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:39,270 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 05:18:39,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:18:39,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-03 05:18:39,484 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 05:18:39,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:39,485 INFO L85 PathProgramCache]: Analyzing trace with hash 363136678, now seen corresponding path program 1 times [2021-11-03 05:18:39,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:39,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063314989] [2021-11-03 05:18:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:39,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:39,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:39,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063314989] [2021-11-03 05:18:39,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063314989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:39,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:39,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:18:39,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238506673] [2021-11-03 05:18:39,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:18:39,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:18:39,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:18:39,636 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:39,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:39,659 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2021-11-03 05:18:39,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:18:39,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 05:18:39,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:39,662 INFO L225 Difference]: With dead ends: 59 [2021-11-03 05:18:39,663 INFO L226 Difference]: Without dead ends: 45 [2021-11-03 05:18:39,665 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:18:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-03 05:18:39,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-03 05:18:39,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-11-03 05:18:39,680 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 6 [2021-11-03 05:18:39,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:39,681 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-11-03 05:18:39,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-11-03 05:18:39,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 05:18:39,684 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:39,684 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:39,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:18:39,688 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 05:18:39,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:39,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1627018292, now seen corresponding path program 1 times [2021-11-03 05:18:39,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:39,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902528369] [2021-11-03 05:18:39,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:39,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:39,709 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:18:39,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296883458] [2021-11-03 05:18:39,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:39,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:39,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:18:39,720 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:18:39,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 05:18:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:39,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 05:18:39,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:18:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:40,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:18:40,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:40,083 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:40,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902528369] [2021-11-03 05:18:40,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:18:40,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296883458] [2021-11-03 05:18:40,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296883458] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:40,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:40,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:18:40,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464413332] [2021-11-03 05:18:40,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:18:40,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:40,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:18:40,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:18:40,091 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:40,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:40,204 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2021-11-03 05:18:40,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:18:40,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-03 05:18:40,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:40,211 INFO L225 Difference]: With dead ends: 57 [2021-11-03 05:18:40,212 INFO L226 Difference]: Without dead ends: 55 [2021-11-03 05:18:40,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:18:40,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-03 05:18:40,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2021-11-03 05:18:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 44 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-11-03 05:18:40,229 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 7 [2021-11-03 05:18:40,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:40,230 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-11-03 05:18:40,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:40,230 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-11-03 05:18:40,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 05:18:40,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:40,232 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:40,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:18:40,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:40,445 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 05:18:40,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:40,445 INFO L85 PathProgramCache]: Analyzing trace with hash -196326513, now seen corresponding path program 1 times [2021-11-03 05:18:40,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:40,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879330306] [2021-11-03 05:18:40,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:40,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:40,467 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:18:40,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842723322] [2021-11-03 05:18:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:40,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:40,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:18:40,474 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:18:40,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 05:18:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:40,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 05:18:40,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:18:40,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:40,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:18:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:40,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:40,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879330306] [2021-11-03 05:18:40,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:18:40,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842723322] [2021-11-03 05:18:40,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842723322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:40,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:40,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:18:40,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890321309] [2021-11-03 05:18:40,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:18:40,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:40,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:18:40,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:18:40,921 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:41,032 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-11-03 05:18:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:18:41,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 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 [2021-11-03 05:18:41,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:41,034 INFO L225 Difference]: With dead ends: 58 [2021-11-03 05:18:41,034 INFO L226 Difference]: Without dead ends: 50 [2021-11-03 05:18:41,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:18:41,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-03 05:18:41,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2021-11-03 05:18:41,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 42 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2021-11-03 05:18:41,042 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 9 [2021-11-03 05:18:41,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:41,042 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2021-11-03 05:18:41,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:41,043 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2021-11-03 05:18:41,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 05:18:41,044 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:41,044 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:41,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:18:41,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:41,269 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 05:18:41,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:41,269 INFO L85 PathProgramCache]: Analyzing trace with hash 987236889, now seen corresponding path program 1 times [2021-11-03 05:18:41,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:41,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356320279] [2021-11-03 05:18:41,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:41,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:41,291 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:18:41,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001982738] [2021-11-03 05:18:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:41,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:41,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:18:41,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:18:41,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 05:18:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:41,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:18:41,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:18:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:41,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:18:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:41,514 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:41,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356320279] [2021-11-03 05:18:41,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:18:41,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001982738] [2021-11-03 05:18:41,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001982738] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:41,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:41,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:18:41,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407786812] [2021-11-03 05:18:41,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:18:41,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:41,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:18:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:18:41,533 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:41,612 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2021-11-03 05:18:41,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:18:41,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 05:18:41,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:41,616 INFO L225 Difference]: With dead ends: 59 [2021-11-03 05:18:41,616 INFO L226 Difference]: Without dead ends: 57 [2021-11-03 05:18:41,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:18:41,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-03 05:18:41,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2021-11-03 05:18:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.236842105263158) internal successors, (47), 44 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) [2021-11-03 05:18:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-11-03 05:18:41,632 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 12 [2021-11-03 05:18:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:41,632 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-11-03 05:18:41,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-11-03 05:18:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 05:18:41,633 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:41,634 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:41,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:18:41,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:41,856 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 05:18:41,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash 599849724, now seen corresponding path program 1 times [2021-11-03 05:18:41,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:41,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757555507] [2021-11-03 05:18:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:41,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:41,871 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:18:41,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885947945] [2021-11-03 05:18:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:41,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:41,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:18:41,878 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:18:41,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 05:18:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:41,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 05:18:41,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:18:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:42,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:18:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:18:42,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:42,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757555507] [2021-11-03 05:18:42,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:18:42,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885947945] [2021-11-03 05:18:42,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885947945] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:18:42,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [300769995] [2021-11-03 05:18:42,602 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-03 05:18:42,603 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 05:18:42,612 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 05:18:42,621 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 05:18:42,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 05:18:42,670 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.2 percent of original size [2021-11-03 05:18:42,675 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:42,675 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:42,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:18:42,678 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:42,679 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:42,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:18:42,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-03 05:18:42,720 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-11-03 05:18:42,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:42,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:42,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:42,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 05:18:42,768 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:42,769 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:18:42,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:42,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:18:42,771 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:18:42,784 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 05:18:42,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:42,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 05:18:42,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:42,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 05:18:42,787 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:18:42,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:42,867 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:42,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:42,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:42,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:42,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:42,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:42,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:42,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:42,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:42,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:42,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 05:18:42,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:42,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:18:42,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:42,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:18:42,906 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 05:18:42,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:42,925 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:42,932 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.4 percent of original size [2021-11-03 05:18:42,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-03 05:18:42,943 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:18:42,943 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:330, output treesize:134 [2021-11-03 05:18:42,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:42,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-03 05:18:42,991 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.1 percent of original size [2021-11-03 05:18:43,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-11-03 05:18:43,010 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-03 05:18:43,027 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-03 05:18:43,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-03 05:18:43,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-03 05:18:43,095 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.9 percent of original size [2021-11-03 05:18:43,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-11-03 05:18:43,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-03 05:18:43,272 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-11-03 05:18:43,295 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,320 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:43,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-03 05:18:43,336 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:43,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-03 05:18:43,360 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:43,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,407 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 349 [2021-11-03 05:18:43,409 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:43,415 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-11-03 05:18:43,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 388 [2021-11-03 05:18:43,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-03 05:18:43,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-11-03 05:18:43,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,657 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.7 percent of original size [2021-11-03 05:18:43,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:18:43,668 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 05:18:43,686 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,701 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:43,703 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-03 05:18:43,717 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:43,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-11-03 05:18:43,735 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:43,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-11-03 05:18:43,760 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:43,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-11-03 05:18:43,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 232 [2021-11-03 05:18:43,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 237 [2021-11-03 05:18:43,806 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-11-03 05:18:43,835 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.7 percent of original size [2021-11-03 05:18:43,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:18:43,849 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 05:18:43,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,881 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:43,883 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,899 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-03 05:18:43,902 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:43,904 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-11-03 05:18:43,915 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:43,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-11-03 05:18:43,936 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:43,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:43,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-03 05:18:43,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247 [2021-11-03 05:18:43,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:43,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:44,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:44,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:44,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:44,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:44,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:44,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:44,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:44,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:44,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:44,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:44,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:44,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:44,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:44,098 INFO L180 QuantifierPusher]: treesize reduction 36, result has 67.0 percent of original size [2021-11-03 05:18:44,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:18:44,103 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 05:18:45,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:18:45,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:18:45,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-11-03 05:18:45,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838012220] [2021-11-03 05:18:45,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:18:45,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:45,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:18:45,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:18:45,414 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:45,564 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2021-11-03 05:18:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:18:45,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 05:18:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:45,568 INFO L225 Difference]: With dead ends: 75 [2021-11-03 05:18:45,569 INFO L226 Difference]: Without dead ends: 71 [2021-11-03 05:18:45,569 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:18:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-03 05:18:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 41. [2021-11-03 05:18:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-11-03 05:18:45,577 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 13 [2021-11-03 05:18:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:45,578 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-11-03 05:18:45,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-11-03 05:18:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 05:18:45,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:45,582 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:45,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-03 05:18:45,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:45,796 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 05:18:45,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:45,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1415456435, now seen corresponding path program 1 times [2021-11-03 05:18:45,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:45,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352058938] [2021-11-03 05:18:45,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:45,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:45,810 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:18:45,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129447824] [2021-11-03 05:18:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:45,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:45,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:18:45,815 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:18:45,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 05:18:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:45,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:18:45,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:18:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:46,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:18:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:46,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:46,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352058938] [2021-11-03 05:18:46,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:18:46,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129447824] [2021-11-03 05:18:46,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129447824] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:18:46,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [217844919] [2021-11-03 05:18:46,087 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-03 05:18:46,087 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 05:18:46,087 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 05:18:46,087 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 05:18:46,087 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 05:18:46,102 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.2 percent of original size [2021-11-03 05:18:46,103 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:46,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:18:46,105 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:46,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,106 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:18:46,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-03 05:18:46,115 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-11-03 05:18:46,125 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 05:18:46,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 05:18:46,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 05:18:46,127 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:18:46,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:46,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:46,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:46,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 05:18:46,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:18:46,144 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:18:46,145 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:18:46,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,156 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:46,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:46,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:46,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:46,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:46,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:46,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:46,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:46,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:46,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 05:18:46,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,183 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:18:46,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:18:46,184 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 05:18:46,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,193 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,196 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.4 percent of original size [2021-11-03 05:18:46,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-03 05:18:46,199 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:18:46,199 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:330, output treesize:134 [2021-11-03 05:18:46,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-03 05:18:46,217 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.1 percent of original size [2021-11-03 05:18:46,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-11-03 05:18:46,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-03 05:18:46,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-03 05:18:46,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-03 05:18:46,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-03 05:18:46,279 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.9 percent of original size [2021-11-03 05:18:46,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 05:18:46,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-03 05:18:46,380 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-11-03 05:18:46,397 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,418 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:46,420 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,434 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-03 05:18:46,437 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:46,440 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 288 [2021-11-03 05:18:46,457 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:46,461 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 316 [2021-11-03 05:18:46,481 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:46,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-03 05:18:46,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 429 [2021-11-03 05:18:46,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 434 [2021-11-03 05:18:46,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 400 [2021-11-03 05:18:46,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:46,709 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.7 percent of original size [2021-11-03 05:18:46,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:18:46,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 05:18:46,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,739 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:46,740 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-11-03 05:18:46,752 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:46,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-03 05:18:46,761 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:46,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-11-03 05:18:46,776 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:46,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-11-03 05:18:46,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-03 05:18:46,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 258 [2021-11-03 05:18:46,817 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-11-03 05:18:46,839 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.7 percent of original size [2021-11-03 05:18:46,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:18:46,849 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,854 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 05:18:46,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,935 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:46,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-03 05:18:46,946 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:46,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-11-03 05:18:46,954 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:46,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-11-03 05:18:46,964 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:46,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:46,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-11-03 05:18:46,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 232 [2021-11-03 05:18:46,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,069 INFO L180 QuantifierPusher]: treesize reduction 36, result has 67.0 percent of original size [2021-11-03 05:18:47,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:18:47,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:47,119 INFO L180 QuantifierPusher]: treesize reduction 40, result has 64.6 percent of original size [2021-11-03 05:18:47,121 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.5 percent of original size 64 [2021-11-03 05:18:47,126 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 05:18:48,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:18:48,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:18:48,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-11-03 05:18:48,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549306572] [2021-11-03 05:18:48,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:18:48,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:48,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:18:48,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-11-03 05:18:48,608 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:48,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:48,676 INFO L93 Difference]: Finished difference Result 107 states and 110 transitions. [2021-11-03 05:18:48,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:18:48,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 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 14 [2021-11-03 05:18:48,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:48,678 INFO L225 Difference]: With dead ends: 107 [2021-11-03 05:18:48,678 INFO L226 Difference]: Without dead ends: 93 [2021-11-03 05:18:48,679 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-11-03 05:18:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-03 05:18:48,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 59. [2021-11-03 05:18:48,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 58 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2021-11-03 05:18:48,688 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 14 [2021-11-03 05:18:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:48,688 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2021-11-03 05:18:48,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2021-11-03 05:18:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 05:18:48,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:48,693 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:48,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-03 05:18:48,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-03 05:18:48,920 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 05:18:48,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:48,921 INFO L85 PathProgramCache]: Analyzing trace with hash -452964580, now seen corresponding path program 1 times [2021-11-03 05:18:48,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:48,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875425170] [2021-11-03 05:18:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:48,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:48,945 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:18:48,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113456512] [2021-11-03 05:18:48,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:48,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:48,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:18:48,968 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:18:48,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 05:18:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:49,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:18:49,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:18:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:49,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:18:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:49,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:49,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875425170] [2021-11-03 05:18:49,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:18:49,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113456512] [2021-11-03 05:18:49,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113456512] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:49,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:49,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-03 05:18:49,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526954693] [2021-11-03 05:18:49,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:18:49,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:49,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:18:49,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:18:49,331 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:49,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:49,486 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2021-11-03 05:18:49,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:18:49,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 14 [2021-11-03 05:18:49,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:49,487 INFO L225 Difference]: With dead ends: 69 [2021-11-03 05:18:49,488 INFO L226 Difference]: Without dead ends: 63 [2021-11-03 05:18:49,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:18:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-03 05:18:49,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2021-11-03 05:18:49,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 56 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:49,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2021-11-03 05:18:49,497 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 14 [2021-11-03 05:18:49,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:49,497 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2021-11-03 05:18:49,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:49,497 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2021-11-03 05:18:49,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 05:18:49,498 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:49,498 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:49,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:18:49,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:49,724 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 05:18:49,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash 930123103, now seen corresponding path program 1 times [2021-11-03 05:18:49,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:49,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530119170] [2021-11-03 05:18:49,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:49,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:49,738 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:18:49,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110446713] [2021-11-03 05:18:49,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:49,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:49,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:18:49,745 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:18:49,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 05:18:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:49,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-03 05:18:49,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:18:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:50,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:18:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:50,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:50,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530119170] [2021-11-03 05:18:50,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:18:50,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110446713] [2021-11-03 05:18:50,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110446713] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:18:50,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [543105174] [2021-11-03 05:18:50,932 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-03 05:18:50,933 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 05:18:50,933 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 05:18:50,933 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 05:18:50,934 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 05:18:50,953 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.2 percent of original size [2021-11-03 05:18:50,955 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:50,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:50,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:18:50,957 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:50,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:50,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:18:50,961 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-03 05:18:50,969 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 21=[|v_#valid_16|]} [2021-11-03 05:18:50,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:50,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:50,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:51,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 05:18:51,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:18:51,011 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:18:51,013 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:18:51,026 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 05:18:51,027 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 05:18:51,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,029 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 05:18:51,029 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:18:51,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,042 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:51,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:51,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:51,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:51,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:51,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:51,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:51,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:51,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:51,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 05:18:51,073 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:18:51,077 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:18:51,078 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 05:18:51,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,113 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,116 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.4 percent of original size [2021-11-03 05:18:51,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-03 05:18:51,119 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:18:51,119 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:330, output treesize:134 [2021-11-03 05:18:51,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-03 05:18:51,134 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.1 percent of original size [2021-11-03 05:18:51,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-11-03 05:18:51,144 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-03 05:18:51,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-03 05:18:51,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-03 05:18:51,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-03 05:18:51,199 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.9 percent of original size [2021-11-03 05:18:51,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 05:18:51,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-03 05:18:51,294 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-11-03 05:18:51,305 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,337 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:51,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-03 05:18:51,350 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:51,353 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 309 [2021-11-03 05:18:51,366 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:51,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,384 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 375 [2021-11-03 05:18:51,386 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:51,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-11-03 05:18:51,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 458 [2021-11-03 05:18:51,430 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 463 [2021-11-03 05:18:51,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 403 [2021-11-03 05:18:51,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,600 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.7 percent of original size [2021-11-03 05:18:51,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:18:51,608 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 05:18:51,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,638 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:51,640 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-03 05:18:51,649 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:51,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-03 05:18:51,659 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:51,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-11-03 05:18:51,669 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:51,672 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 214 [2021-11-03 05:18:51,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-03 05:18:51,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 258 [2021-11-03 05:18:51,701 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-11-03 05:18:51,726 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.7 percent of original size [2021-11-03 05:18:51,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:18:51,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 05:18:51,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,859 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:51,867 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-03 05:18:51,879 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:51,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-11-03 05:18:51,889 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:51,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-11-03 05:18:51,899 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:18:51,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:18:51,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-03 05:18:51,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247 [2021-11-03 05:18:51,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:51,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:18:52,004 INFO L180 QuantifierPusher]: treesize reduction 36, result has 67.0 percent of original size [2021-11-03 05:18:52,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:18:52,010 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 05:18:55,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:18:55,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:18:55,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2021-11-03 05:18:55,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804164753] [2021-11-03 05:18:55,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:18:55,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:18:55,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:18:55,341 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:00,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:00,263 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2021-11-03 05:19:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:19:00,263 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 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 15 [2021-11-03 05:19:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:00,264 INFO L225 Difference]: With dead ends: 69 [2021-11-03 05:19:00,264 INFO L226 Difference]: Without dead ends: 67 [2021-11-03 05:19:00,265 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2021-11-03 05:19:00,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-03 05:19:00,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2021-11-03 05:19:00,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 54 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2021-11-03 05:19:00,274 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 15 [2021-11-03 05:19:00,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:00,274 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2021-11-03 05:19:00,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:00,275 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2021-11-03 05:19:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 05:19:00,275 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:00,275 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-03 05:19:00,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:19:00,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-11-03 05:19:00,476 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 05:19:00,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:00,477 INFO L85 PathProgramCache]: Analyzing trace with hash 495260770, now seen corresponding path program 1 times [2021-11-03 05:19:00,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:00,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015149008] [2021-11-03 05:19:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:00,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:00,488 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:19:00,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066670939] [2021-11-03 05:19:00,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:00,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:19:00,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:19:00,504 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:19:00,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 05:19:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:00,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-03 05:19:00,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:19:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:01,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:19:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:02,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:02,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015149008] [2021-11-03 05:19:02,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:19:02,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066670939] [2021-11-03 05:19:02,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066670939] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:19:02,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [167600400] [2021-11-03 05:19:02,053 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-03 05:19:02,054 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 05:19:02,054 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 05:19:02,054 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 05:19:02,054 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 05:19:02,068 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.2 percent of original size [2021-11-03 05:19:02,069 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:02,070 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:19:02,071 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:02,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:19:02,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-03 05:19:02,083 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 21=[|v_#valid_17|]} [2021-11-03 05:19:02,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:02,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:02,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:02,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 05:19:02,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,112 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:19:02,113 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:19:02,114 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:02,123 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 05:19:02,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 05:19:02,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 05:19:02,127 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:02,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,135 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:02,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:02,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:02,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:02,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:02,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:02,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:02,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:02,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:02,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 05:19:02,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:02,162 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:02,162 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:02,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,172 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,175 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.4 percent of original size [2021-11-03 05:19:02,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-03 05:19:02,178 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:02,178 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:330, output treesize:134 [2021-11-03 05:19:02,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-03 05:19:02,192 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.1 percent of original size [2021-11-03 05:19:02,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-11-03 05:19:02,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-03 05:19:02,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-03 05:19:02,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-03 05:19:02,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-03 05:19:02,248 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.9 percent of original size [2021-11-03 05:19:02,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-11-03 05:19:02,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,306 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-03 05:19:02,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-11-03 05:19:02,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,341 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:02,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-03 05:19:02,357 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:02,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 259 [2021-11-03 05:19:02,369 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:02,372 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,382 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 330 [2021-11-03 05:19:02,383 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:02,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 334 [2021-11-03 05:19:02,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 427 [2021-11-03 05:19:02,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 432 [2021-11-03 05:19:02,431 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-11-03 05:19:02,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,545 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.7 percent of original size [2021-11-03 05:19:02,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:19:02,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 05:19:02,560 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,568 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:02,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-03 05:19:02,578 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:02,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-03 05:19:02,586 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:02,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-03 05:19:02,596 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:02,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 193 [2021-11-03 05:19:02,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 232 [2021-11-03 05:19:02,618 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 237 [2021-11-03 05:19:02,626 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-11-03 05:19:02,650 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.7 percent of original size [2021-11-03 05:19:02,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:19:02,683 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 05:19:02,771 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,778 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:02,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-03 05:19:02,788 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:02,789 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-03 05:19:02,797 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:02,799 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-03 05:19:02,806 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:02,807 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:02,813 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-11-03 05:19:02,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-03 05:19:02,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:02,956 INFO L180 QuantifierPusher]: treesize reduction 36, result has 67.0 percent of original size [2021-11-03 05:19:02,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:19:03,074 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 05:19:07,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:19:07,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:19:07,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2021-11-03 05:19:07,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822907108] [2021-11-03 05:19:07,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:19:07,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:07,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:19:07,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-11-03 05:19:07,177 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:08,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:08,450 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2021-11-03 05:19:08,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:19:08,451 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 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 17 [2021-11-03 05:19:08,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:08,452 INFO L225 Difference]: With dead ends: 67 [2021-11-03 05:19:08,452 INFO L226 Difference]: Without dead ends: 43 [2021-11-03 05:19:08,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-11-03 05:19:08,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-03 05:19:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-03 05:19:08,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-11-03 05:19:08,461 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 17 [2021-11-03 05:19:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:08,462 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-11-03 05:19:08,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:08,462 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-11-03 05:19:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 05:19:08,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:08,464 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2021-11-03 05:19:08,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:19:08,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:19:08,692 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 05:19:08,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:08,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2074650406, now seen corresponding path program 2 times [2021-11-03 05:19:08,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:08,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946293623] [2021-11-03 05:19:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:08,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:08,713 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:19:08,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375872284] [2021-11-03 05:19:08,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:19:08,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:19:08,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:19:08,731 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:19:08,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 05:19:09,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-03 05:19:09,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:19:09,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 05:19:09,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:19:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:09,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:19:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:10,139 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:10,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946293623] [2021-11-03 05:19:10,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:19:10,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375872284] [2021-11-03 05:19:10,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375872284] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:19:10,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1061626670] [2021-11-03 05:19:10,143 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-03 05:19:10,143 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 05:19:10,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 05:19:10,143 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 05:19:10,144 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 05:19:10,153 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.2 percent of original size [2021-11-03 05:19:10,154 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:10,154 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:19:10,155 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:10,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:19:10,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-03 05:19:10,163 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 21=[|v_#valid_18|]} [2021-11-03 05:19:10,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:10,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:10,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:10,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 05:19:10,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:19:10,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:19:10,189 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:10,198 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 05:19:10,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 05:19:10,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 05:19:10,200 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:10,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,206 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:10,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:10,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:10,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:10,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:10,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:10,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:10,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:10,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:10,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 05:19:10,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:10,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:10,232 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:10,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,239 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,242 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.4 percent of original size [2021-11-03 05:19:10,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-03 05:19:10,244 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:10,245 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:330, output treesize:134 [2021-11-03 05:19:10,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-03 05:19:10,260 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.1 percent of original size [2021-11-03 05:19:10,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-11-03 05:19:10,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-03 05:19:10,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-03 05:19:10,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-03 05:19:10,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-03 05:19:10,310 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.9 percent of original size [2021-11-03 05:19:10,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-11-03 05:19:10,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-03 05:19:10,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-11-03 05:19:10,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,434 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:10,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-03 05:19:10,447 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:10,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 193 [2021-11-03 05:19:10,482 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:10,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-11-03 05:19:10,497 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:10,500 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 355 [2021-11-03 05:19:10,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 456 [2021-11-03 05:19:10,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 461 [2021-11-03 05:19:10,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,561 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 405 [2021-11-03 05:19:10,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:10,655 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.7 percent of original size [2021-11-03 05:19:10,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:19:10,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 05:19:10,675 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,684 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:10,685 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-11-03 05:19:10,695 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:10,696 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 199 [2021-11-03 05:19:10,705 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:10,707 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-03 05:19:10,715 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:10,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-11-03 05:19:10,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-03 05:19:10,738 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 255 [2021-11-03 05:19:10,771 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 193 [2021-11-03 05:19:10,791 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.7 percent of original size [2021-11-03 05:19:10,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:19:10,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:10,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 05:19:11,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:11,047 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:11,048 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:11,055 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-11-03 05:19:11,057 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:11,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:11,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 199 [2021-11-03 05:19:11,067 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:11,069 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:11,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-11-03 05:19:11,078 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:11,080 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:11,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-11-03 05:19:11,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-03 05:19:11,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,178 INFO L180 QuantifierPusher]: treesize reduction 36, result has 67.0 percent of original size [2021-11-03 05:19:11,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:19:11,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:11,229 INFO L180 QuantifierPusher]: treesize reduction 40, result has 64.6 percent of original size [2021-11-03 05:19:11,231 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.5 percent of original size 64 [2021-11-03 05:19:11,242 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 05:19:15,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:19:15,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:19:15,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-03 05:19:15,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618244639] [2021-11-03 05:19:15,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 05:19:15,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:15,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 05:19:15,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2021-11-03 05:19:15,247 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:15,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:15,438 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2021-11-03 05:19:15,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 05:19:15,438 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 states have internal predecessors, (73), 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 38 [2021-11-03 05:19:15,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:15,439 INFO L225 Difference]: With dead ends: 99 [2021-11-03 05:19:15,440 INFO L226 Difference]: Without dead ends: 91 [2021-11-03 05:19:15,440 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=232, Invalid=890, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 05:19:15,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-03 05:19:15,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-11-03 05:19:15,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 90 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:15,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2021-11-03 05:19:15,457 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 38 [2021-11-03 05:19:15,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:15,458 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2021-11-03 05:19:15,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:15,458 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2021-11-03 05:19:15,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 05:19:15,462 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:15,462 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2021-11-03 05:19:15,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:19:15,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:19:15,670 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 05:19:15,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:15,670 INFO L85 PathProgramCache]: Analyzing trace with hash -205918680, now seen corresponding path program 3 times [2021-11-03 05:19:15,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:15,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055580857] [2021-11-03 05:19:15,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:15,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:15,699 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:19:15,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785969924] [2021-11-03 05:19:15,700 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 05:19:15,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:19:15,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:19:15,729 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:19:15,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 05:19:16,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 05:19:16,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:19:16,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-03 05:19:16,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:19:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:17,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:19:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:17,601 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:17,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055580857] [2021-11-03 05:19:17,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:19:17,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785969924] [2021-11-03 05:19:17,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785969924] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:19:17,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [215082225] [2021-11-03 05:19:17,605 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-03 05:19:17,605 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 05:19:17,605 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 05:19:17,606 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 05:19:17,606 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 05:19:17,615 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.2 percent of original size [2021-11-03 05:19:17,616 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:17,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:19:17,618 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:17,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:19:17,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-03 05:19:17,626 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_18|], 21=[|v_#valid_19|]} [2021-11-03 05:19:17,634 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 05:19:17,634 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 05:19:17,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 05:19:17,636 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:17,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:17,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:17,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:17,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 05:19:17,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:19:17,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:19:17,651 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:17,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:17,661 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:17,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:17,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:17,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:17,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:17,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:17,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:17,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:17,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:17,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 05:19:17,683 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:17,686 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:17,686 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:17,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:17,693 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,696 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.4 percent of original size [2021-11-03 05:19:17,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-03 05:19:17,700 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:17,700 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:330, output treesize:134 [2021-11-03 05:19:17,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-03 05:19:17,715 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.1 percent of original size [2021-11-03 05:19:17,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-11-03 05:19:17,724 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-03 05:19:17,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-11-03 05:19:17,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-11-03 05:19:17,759 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-11-03 05:19:17,786 INFO L180 QuantifierPusher]: treesize reduction 9, result has 96.1 percent of original size [2021-11-03 05:19:17,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 05:19:17,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:17,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:17,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:17,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:17,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:17,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:17,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:17,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:17,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:17,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-03 05:19:17,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-11-03 05:19:17,886 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,899 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:17,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 265 [2021-11-03 05:19:17,918 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:17,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 285 [2021-11-03 05:19:17,932 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:17,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,946 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 364 [2021-11-03 05:19:17,948 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:17,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 370 [2021-11-03 05:19:17,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 429 [2021-11-03 05:19:17,985 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:17,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 434 [2021-11-03 05:19:17,998 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 400 [2021-11-03 05:19:18,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,141 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.7 percent of original size [2021-11-03 05:19:18,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:19:18,148 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 05:19:18,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,164 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:18,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-03 05:19:18,179 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:18,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-11-03 05:19:18,186 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:18,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-11-03 05:19:18,195 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:18,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-11-03 05:19:18,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 232 [2021-11-03 05:19:18,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 237 [2021-11-03 05:19:18,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-11-03 05:19:18,244 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.7 percent of original size [2021-11-03 05:19:18,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:19:18,297 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 05:19:18,389 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,401 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:18,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-03 05:19:18,420 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:18,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-03 05:19:18,430 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:18,432 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-11-03 05:19:18,440 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:18,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:18,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-11-03 05:19:18,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247 [2021-11-03 05:19:18,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,540 INFO L180 QuantifierPusher]: treesize reduction 36, result has 67.0 percent of original size [2021-11-03 05:19:18,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:19:18,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:18,590 INFO L180 QuantifierPusher]: treesize reduction 40, result has 64.6 percent of original size [2021-11-03 05:19:18,592 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.5 percent of original size 64 [2021-11-03 05:19:18,597 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 05:19:22,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:19:22,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:19:22,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2021-11-03 05:19:22,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985590254] [2021-11-03 05:19:22,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-03 05:19:22,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:22,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-03 05:19:22,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 05:19:22,950 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 25 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:23,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:23,387 INFO L93 Difference]: Finished difference Result 195 states and 206 transitions. [2021-11-03 05:19:23,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-03 05:19:23,387 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 25 states have internal predecessors, (169), 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 86 [2021-11-03 05:19:23,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:23,389 INFO L225 Difference]: With dead ends: 195 [2021-11-03 05:19:23,389 INFO L226 Difference]: Without dead ends: 187 [2021-11-03 05:19:23,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=844, Invalid=2462, Unknown=0, NotChecked=0, Total=3306 [2021-11-03 05:19:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-03 05:19:23,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-11-03 05:19:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 185 states have (on average 1.0108108108108107) internal successors, (187), 186 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:23,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2021-11-03 05:19:23,420 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 86 [2021-11-03 05:19:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:23,421 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2021-11-03 05:19:23,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 25 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2021-11-03 05:19:23,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-03 05:19:23,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:23,425 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2021-11-03 05:19:23,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:19:23,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:19:23,633 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 05:19:23,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:23,634 INFO L85 PathProgramCache]: Analyzing trace with hash -870064956, now seen corresponding path program 4 times [2021-11-03 05:19:23,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:23,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836864939] [2021-11-03 05:19:23,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:23,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:23,650 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:19:23,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62707332] [2021-11-03 05:19:23,651 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 05:19:23,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:19:23,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:19:23,666 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:19:23,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 05:19:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:24,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-03 05:19:24,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:19:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:25,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:19:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:26,368 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:26,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836864939] [2021-11-03 05:19:26,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:19:26,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62707332] [2021-11-03 05:19:26,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62707332] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:19:26,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [930162982] [2021-11-03 05:19:26,372 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-03 05:19:26,372 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 05:19:26,372 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 05:19:26,373 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 05:19:26,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 05:19:26,382 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.2 percent of original size [2021-11-03 05:19:26,382 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:26,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,383 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:19:26,384 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:26,384 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:19:26,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-03 05:19:26,392 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_19|], 21=[|v_#valid_20|]} [2021-11-03 05:19:26,400 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 05:19:26,400 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 05:19:26,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,402 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 05:19:26,402 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:26,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:26,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:26,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:26,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 05:19:26,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:19:26,425 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:19:26,426 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:26,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,431 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:26,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:26,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:26,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:26,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:26,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:26,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:26,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:26,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:26,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 05:19:26,450 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:26,452 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:26,452 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:26,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,456 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,458 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.4 percent of original size [2021-11-03 05:19:26,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-03 05:19:26,461 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:26,461 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:330, output treesize:134 [2021-11-03 05:19:26,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-03 05:19:26,471 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.1 percent of original size [2021-11-03 05:19:26,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-11-03 05:19:26,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-11-03 05:19:26,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-03 05:19:26,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-03 05:19:26,509 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-03 05:19:26,519 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.9 percent of original size [2021-11-03 05:19:26,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-03 05:19:26,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-03 05:19:26,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-11-03 05:19:26,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,629 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:26,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-03 05:19:26,641 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:26,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 288 [2021-11-03 05:19:26,654 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:26,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 350 [2021-11-03 05:19:26,675 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:26,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 370 [2021-11-03 05:19:26,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 429 [2021-11-03 05:19:26,708 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 434 [2021-11-03 05:19:26,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 400 [2021-11-03 05:19:26,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:26,810 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.7 percent of original size [2021-11-03 05:19:26,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:19:26,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 05:19:26,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,845 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:26,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,854 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-03 05:19:26,856 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:26,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-03 05:19:26,863 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:26,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-11-03 05:19:26,872 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:26,874 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-11-03 05:19:26,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-03 05:19:26,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 258 [2021-11-03 05:19:26,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-11-03 05:19:26,915 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.7 percent of original size [2021-11-03 05:19:26,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 05:19:26,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:26,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-03 05:19:27,075 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:27,081 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:27,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:27,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-03 05:19:27,090 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:27,091 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:27,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-03 05:19:27,097 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:27,098 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:27,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-11-03 05:19:27,106 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:27,108 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:27,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-11-03 05:19:27,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-03 05:19:27,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,188 INFO L180 QuantifierPusher]: treesize reduction 36, result has 67.0 percent of original size [2021-11-03 05:19:27,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:19:27,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:27,252 INFO L180 QuantifierPusher]: treesize reduction 40, result has 64.6 percent of original size [2021-11-03 05:19:27,254 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.5 percent of original size 64 [2021-11-03 05:19:27,259 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 05:19:32,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:19:32,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:19:32,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2021-11-03 05:19:32,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381582896] [2021-11-03 05:19:32,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-03 05:19:32,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:32,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-03 05:19:32,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1181, Invalid=2479, Unknown=0, NotChecked=0, Total=3660 [2021-11-03 05:19:32,308 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand has 50 states, 50 states have (on average 7.22) internal successors, (361), 49 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:33,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:33,868 INFO L93 Difference]: Finished difference Result 387 states and 410 transitions. [2021-11-03 05:19:33,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-11-03 05:19:33,868 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.22) internal successors, (361), 49 states have internal predecessors, (361), 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 182 [2021-11-03 05:19:33,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:33,872 INFO L225 Difference]: With dead ends: 387 [2021-11-03 05:19:33,873 INFO L226 Difference]: Without dead ends: 379 [2021-11-03 05:19:33,877 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2460 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=3364, Invalid=7766, Unknown=0, NotChecked=0, Total=11130 [2021-11-03 05:19:33,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-11-03 05:19:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2021-11-03 05:19:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 377 states have (on average 1.0053050397877985) internal successors, (379), 378 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2021-11-03 05:19:33,934 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 182 [2021-11-03 05:19:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:33,934 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2021-11-03 05:19:33,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.22) internal successors, (361), 49 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:33,935 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2021-11-03 05:19:33,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-03 05:19:33,947 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:33,948 INFO L513 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1] [2021-11-03 05:19:33,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:19:34,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable276 [2021-11-03 05:19:34,176 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 05:19:34,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:34,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1700083204, now seen corresponding path program 5 times [2021-11-03 05:19:34,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:34,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73218491] [2021-11-03 05:19:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:34,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:34,196 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:19:34,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500736939] [2021-11-03 05:19:34,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:19:34,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:19:34,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:19:34,200 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:19:34,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963d25a7-4de4-4fae-8c3d-ab14e0b73d73/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process