./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V --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 1ae3736aabcb020d122100864e41791456e1f94490735ab1a93eef5c54883fe7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:18:30,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:18:30,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:18:30,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:18:30,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:18:30,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:18:30,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:18:30,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:18:30,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:18:30,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:18:30,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:18:30,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:18:30,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:18:30,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:18:30,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:18:30,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:18:30,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:18:30,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:18:30,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:18:30,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:18:30,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:18:30,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:18:30,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:18:30,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:18:30,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:18:30,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:18:30,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:18:30,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:18:30,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:18:30,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:18:30,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:18:30,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:18:30,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:18:30,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:18:30,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:18:30,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:18:30,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:18:30,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:18:30,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:18:30,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:18:30,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:18:30,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:18:30,549 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:18:30,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:18:30,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:18:30,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:18:30,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:18:30,558 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:18:30,558 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:18:30,558 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:18:30,559 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:18:30,559 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:18:30,560 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:18:30,560 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:18:30,561 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:18:30,561 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:18:30,561 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:18:30,561 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:18:30,562 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:18:30,562 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:18:30,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:18:30,563 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:18:30,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:18:30,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:18:30,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:18:30,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:18:30,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:18:30,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:18:30,566 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:18:30,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:18:30,567 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:18:30,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:18:30,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:18:30,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:18:30,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:18:30,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:18:30,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:18:30,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:18:30,569 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:18:30,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:18:30,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:18:30,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:18:30,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:18:30,570 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_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ae3736aabcb020d122100864e41791456e1f94490735ab1a93eef5c54883fe7 [2021-11-23 03:18:30,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:18:30,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:18:30,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:18:30,907 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:18:30,908 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:18:30,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c [2021-11-23 03:18:31,002 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/data/fa2ce3871/c3d31cd50c9244b39e97537c446cbf40/FLAGe7477e9f8 [2021-11-23 03:18:31,513 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:18:31,514 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c [2021-11-23 03:18:31,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/data/fa2ce3871/c3d31cd50c9244b39e97537c446cbf40/FLAGe7477e9f8 [2021-11-23 03:18:31,885 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/data/fa2ce3871/c3d31cd50c9244b39e97537c446cbf40 [2021-11-23 03:18:31,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:18:31,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:18:31,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:18:31,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:18:31,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:18:31,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:18:31" (1/1) ... [2021-11-23 03:18:31,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b5e6b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:31, skipping insertion in model container [2021-11-23 03:18:31,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:18:31" (1/1) ... [2021-11-23 03:18:31,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:18:31,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:18:32,133 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2021-11-23 03:18:32,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:18:32,155 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:18:32,183 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2021-11-23 03:18:32,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:18:32,206 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:18:32,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:32 WrapperNode [2021-11-23 03:18:32,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:18:32,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:18:32,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:18:32,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:18:32,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:32" (1/1) ... [2021-11-23 03:18:32,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:32" (1/1) ... [2021-11-23 03:18:32,255 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 115 [2021-11-23 03:18:32,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:18:32,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:18:32,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:18:32,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:18:32,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:32" (1/1) ... [2021-11-23 03:18:32,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:32" (1/1) ... [2021-11-23 03:18:32,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:32" (1/1) ... [2021-11-23 03:18:32,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:32" (1/1) ... [2021-11-23 03:18:32,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:32" (1/1) ... [2021-11-23 03:18:32,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:32" (1/1) ... [2021-11-23 03:18:32,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:32" (1/1) ... [2021-11-23 03:18:32,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:18:32,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:18:32,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:18:32,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:18:32,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:32" (1/1) ... [2021-11-23 03:18:32,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:18:32,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:18:32,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:18:32,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:18:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:18:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:18:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:18:32,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:18:32,458 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:18:32,461 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:18:32,705 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:18:32,785 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:18:32,785 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:18:32,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:18:32 BoogieIcfgContainer [2021-11-23 03:18:32,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:18:32,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:18:32,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:18:32,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:18:32,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:18:31" (1/3) ... [2021-11-23 03:18:32,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1238350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:18:32, skipping insertion in model container [2021-11-23 03:18:32,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:32" (2/3) ... [2021-11-23 03:18:32,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1238350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:18:32, skipping insertion in model container [2021-11-23 03:18:32,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:18:32" (3/3) ... [2021-11-23 03:18:32,812 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+lhb-reducer.c [2021-11-23 03:18:32,817 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:18:32,818 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:18:32,877 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:18:32,896 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 [2021-11-23 03:18:32,899 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:18:32,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 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) [2021-11-23 03:18:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 03:18:32,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:18:32,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:18:32,924 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:18:32,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:18:32,930 INFO L85 PathProgramCache]: Analyzing trace with hash -255100683, now seen corresponding path program 1 times [2021-11-23 03:18:32,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:18:32,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455213935] [2021-11-23 03:18:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:32,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:18:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:33,373 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:18:33,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455213935] [2021-11-23 03:18:33,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455213935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:18:33,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:18:33,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:18:33,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616256047] [2021-11-23 03:18:33,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:18:33,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:18:33,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:18:33,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:18:33,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:18:33,419 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 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 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:33,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:18:33,509 INFO L93 Difference]: Finished difference Result 22 states and 33 transitions. [2021-11-23 03:18:33,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:18:33,512 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 03:18:33,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:18:33,520 INFO L225 Difference]: With dead ends: 22 [2021-11-23 03:18:33,520 INFO L226 Difference]: Without dead ends: 15 [2021-11-23 03:18:33,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:18:33,528 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:18:33,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:18:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-23 03:18:33,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-23 03:18:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-23 03:18:33,562 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-11-23 03:18:33,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:18:33,562 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-23 03:18:33,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:18:33,563 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-23 03:18:33,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:18:33,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:18:33,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:18:33,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:18:33,565 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:18:33,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:18:33,566 INFO L85 PathProgramCache]: Analyzing trace with hash 683478881, now seen corresponding path program 1 times [2021-11-23 03:18:33,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:18:33,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716050907] [2021-11-23 03:18:33,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:33,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:18:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:33,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:18:33,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716050907] [2021-11-23 03:18:33,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716050907] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:18:33,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685700920] [2021-11-23 03:18:33,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:33,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:18:33,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:18:33,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:18:33,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:18:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:33,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 03:18:33,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:18:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:34,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:18:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:34,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685700920] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:18:34,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [917135253] [2021-11-23 03:18:34,947 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-23 03:18:34,948 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:18:34,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:18:34,960 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:18:34,961 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:18:35,459 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:18:36,193 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '192#(and (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| |ULTIMATE.start_main_~__tmp_1~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0) (= (ite (= |ULTIMATE.start_main_~main__y~0#1| 100) 1 0) |ULTIMATE.start_main_~__tmp_1~0#1|) (<= 100 |ULTIMATE.start_main_~main__x~0#1|) (<= ~__return_main~0 0) (<= 50 |ULTIMATE.start_main_~main__y~0#1|) (<= 0 ~__return_720~0) (<= ~__return_720~0 0) (<= 0 ~__return_main~0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:18:36,194 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:18:36,194 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:18:36,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-11-23 03:18:36,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66029238] [2021-11-23 03:18:36,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:18:36,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-23 03:18:36,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:18:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-23 03:18:36,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=795, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 03:18:36,199 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 24 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 23 states have internal predecessors, (26), 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) [2021-11-23 03:18:36,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:18:36,284 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2021-11-23 03:18:36,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 03:18:36,285 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 23 states have internal predecessors, (26), 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 [2021-11-23 03:18:36,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:18:36,286 INFO L225 Difference]: With dead ends: 30 [2021-11-23 03:18:36,286 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 03:18:36,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=465, Invalid=795, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 03:18:36,289 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:18:36,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:18:36,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 03:18:36,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-23 03:18:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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) [2021-11-23 03:18:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-11-23 03:18:36,297 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2021-11-23 03:18:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:18:36,297 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-11-23 03:18:36,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 23 states have internal predecessors, (26), 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) [2021-11-23 03:18:36,298 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-11-23 03:18:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:18:36,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:18:36,299 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:18:36,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 03:18:36,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-23 03:18:36,509 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:18:36,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:18:36,510 INFO L85 PathProgramCache]: Analyzing trace with hash -972358047, now seen corresponding path program 2 times [2021-11-23 03:18:36,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:18:36,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52056985] [2021-11-23 03:18:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:36,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:18:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:36,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:18:36,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52056985] [2021-11-23 03:18:36,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52056985] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:18:36,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040049104] [2021-11-23 03:18:36,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:18:36,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:18:36,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:18:36,933 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:18:36,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:18:37,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-23 03:18:37,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:18:37,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 03:18:37,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:18:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:37,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:18:38,449 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:38,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040049104] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:18:38,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [388517222] [2021-11-23 03:18:38,455 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-23 03:18:38,455 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:18:38,456 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:18:38,456 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:18:38,456 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:18:38,733 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:18:39,412 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '503#(and (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| |ULTIMATE.start_main_~__tmp_1~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0) (= (ite (= |ULTIMATE.start_main_~main__y~0#1| 100) 1 0) |ULTIMATE.start_main_~__tmp_1~0#1|) (<= 100 |ULTIMATE.start_main_~main__x~0#1|) (<= ~__return_main~0 0) (<= 50 |ULTIMATE.start_main_~main__y~0#1|) (<= 0 ~__return_720~0) (<= ~__return_720~0 0) (<= 0 ~__return_main~0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:18:39,413 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:18:39,413 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:18:39,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-11-23 03:18:39,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486365621] [2021-11-23 03:18:39,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:18:39,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-23 03:18:39,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:18:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-23 03:18:39,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1533, Invalid=2007, Unknown=0, NotChecked=0, Total=3540 [2021-11-23 03:18:39,423 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 48 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 47 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) [2021-11-23 03:18:39,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:18:39,596 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2021-11-23 03:18:39,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-23 03:18:39,599 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 47 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) Word has length 26 [2021-11-23 03:18:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:18:39,604 INFO L225 Difference]: With dead ends: 54 [2021-11-23 03:18:39,604 INFO L226 Difference]: Without dead ends: 51 [2021-11-23 03:18:39,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1533, Invalid=2007, Unknown=0, NotChecked=0, Total=3540 [2021-11-23 03:18:39,610 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:18:39,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:18:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-23 03:18:39,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-23 03:18:39,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 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) [2021-11-23 03:18:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-11-23 03:18:39,628 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2021-11-23 03:18:39,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:18:39,629 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-11-23 03:18:39,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 47 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) [2021-11-23 03:18:39,629 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-11-23 03:18:39,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 03:18:39,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:18:39,632 INFO L514 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:18:39,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:18:39,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:18:39,849 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:18:39,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:18:39,850 INFO L85 PathProgramCache]: Analyzing trace with hash 152788065, now seen corresponding path program 3 times [2021-11-23 03:18:39,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:18:39,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684596013] [2021-11-23 03:18:39,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:39,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:18:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:41,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:18:41,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684596013] [2021-11-23 03:18:41,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684596013] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:18:41,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789953876] [2021-11-23 03:18:41,119 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 03:18:41,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:18:41,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:18:41,121 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:18:41,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:18:41,193 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 03:18:41,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:18:41,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-23 03:18:41,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:18:41,412 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:41,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:18:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:45,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789953876] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:18:45,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [852069740] [2021-11-23 03:18:45,520 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-23 03:18:45,520 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:18:45,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:18:45,525 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:18:45,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:18:45,765 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:18:46,544 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1102#(and (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| |ULTIMATE.start_main_~__tmp_1~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0) (= (ite (= |ULTIMATE.start_main_~main__y~0#1| 100) 1 0) |ULTIMATE.start_main_~__tmp_1~0#1|) (<= 100 |ULTIMATE.start_main_~main__x~0#1|) (<= ~__return_main~0 0) (<= 50 |ULTIMATE.start_main_~main__y~0#1|) (<= 0 ~__return_720~0) (<= ~__return_720~0 0) (<= 0 ~__return_main~0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:18:46,544 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:18:46,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:18:46,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-11-23 03:18:46,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055998124] [2021-11-23 03:18:46,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:18:46,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-23 03:18:46,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:18:46,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-23 03:18:46,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5397, Invalid=6159, Unknown=0, NotChecked=0, Total=11556 [2021-11-23 03:18:46,558 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 96 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 95 states have internal predecessors, (98), 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) [2021-11-23 03:18:46,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:18:46,864 INFO L93 Difference]: Finished difference Result 102 states and 149 transitions. [2021-11-23 03:18:46,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-23 03:18:46,865 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 95 states have internal predecessors, (98), 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 50 [2021-11-23 03:18:46,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:18:46,871 INFO L225 Difference]: With dead ends: 102 [2021-11-23 03:18:46,871 INFO L226 Difference]: Without dead ends: 99 [2021-11-23 03:18:46,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5397, Invalid=6159, Unknown=0, NotChecked=0, Total=11556 [2021-11-23 03:18:46,879 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:18:46,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:18:46,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-23 03:18:46,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-11-23 03:18:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.010204081632653) internal successors, (99), 98 states have internal predecessors, (99), 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) [2021-11-23 03:18:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2021-11-23 03:18:46,909 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 50 [2021-11-23 03:18:46,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:18:46,910 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2021-11-23 03:18:46,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 95 states have internal predecessors, (98), 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) [2021-11-23 03:18:46,910 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2021-11-23 03:18:46,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-23 03:18:46,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:18:46,917 INFO L514 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:18:46,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-23 03:18:47,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:18:47,137 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:18:47,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:18:47,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1108220001, now seen corresponding path program 4 times [2021-11-23 03:18:47,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:18:47,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071053403] [2021-11-23 03:18:47,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:18:47,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:18:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:51,722 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:18:51,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071053403] [2021-11-23 03:18:51,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071053403] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:18:51,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541977522] [2021-11-23 03:18:51,722 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 03:18:51,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:18:51,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:18:51,724 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:18:51,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:18:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:18:51,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-23 03:18:51,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:18:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:18:52,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:19:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:02,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541977522] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:19:02,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1092464573] [2021-11-23 03:19:02,961 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-23 03:19:02,961 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:19:02,962 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:19:02,962 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:19:02,962 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:19:03,181 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:19:05,156 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2277#(and (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| |ULTIMATE.start_main_~__tmp_1~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0) (= (ite (= |ULTIMATE.start_main_~main__y~0#1| 100) 1 0) |ULTIMATE.start_main_~__tmp_1~0#1|) (<= 100 |ULTIMATE.start_main_~main__x~0#1|) (<= ~__return_main~0 0) (<= 50 |ULTIMATE.start_main_~main__y~0#1|) (<= 0 ~__return_720~0) (<= ~__return_720~0 0) (<= 0 ~__return_main~0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:19:05,156 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:19:05,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:19:05,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-11-23 03:19:05,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447773713] [2021-11-23 03:19:05,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:19:05,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-23 03:19:05,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:19:05,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-23 03:19:05,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10751, Invalid=30661, Unknown=0, NotChecked=0, Total=41412 [2021-11-23 03:19:05,174 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand has 192 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 191 states have internal predecessors, (196), 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) [2021-11-23 03:19:07,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:19:07,457 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2021-11-23 03:19:07,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-23 03:19:07,458 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 191 states have internal predecessors, (196), 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 98 [2021-11-23 03:19:07,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:19:07,465 INFO L225 Difference]: With dead ends: 108 [2021-11-23 03:19:07,466 INFO L226 Difference]: Without dead ends: 105 [2021-11-23 03:19:07,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7240 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=10751, Invalid=30661, Unknown=0, NotChecked=0, Total=41412 [2021-11-23 03:19:07,471 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5296 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 5388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 5296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:19:07,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 5388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 5296 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 03:19:07,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-23 03:19:07,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-11-23 03:19:07,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0096153846153846) internal successors, (105), 104 states have internal predecessors, (105), 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) [2021-11-23 03:19:07,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2021-11-23 03:19:07,502 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2021-11-23 03:19:07,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:19:07,505 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2021-11-23 03:19:07,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 191 states have internal predecessors, (196), 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) [2021-11-23 03:19:07,506 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2021-11-23 03:19:07,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 03:19:07,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:19:07,511 INFO L514 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:19:07,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:19:07,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:19:07,758 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:19:07,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:19:07,758 INFO L85 PathProgramCache]: Analyzing trace with hash 947134433, now seen corresponding path program 5 times [2021-11-23 03:19:07,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:19:07,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129336675] [2021-11-23 03:19:07,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:19:07,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:19:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:19:13,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:13,681 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:19:13,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129336675] [2021-11-23 03:19:13,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129336675] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:19:13,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622584120] [2021-11-23 03:19:13,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:19:13,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:19:13,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:19:13,685 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:19:13,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 03:19:13,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-23 03:19:13,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:19:13,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 108 conjunts are in the unsatisfiable core [2021-11-23 03:19:13,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:19:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:20,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:21:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:21:19,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622584120] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:21:19,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [180024973] [2021-11-23 03:21:19,556 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-23 03:21:19,556 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:21:19,556 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:21:19,557 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:21:19,557 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:21:19,719 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:21:22,607 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3577#(and (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| |ULTIMATE.start_main_~__tmp_1~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0) (= (ite (= |ULTIMATE.start_main_~main__y~0#1| 100) 1 0) |ULTIMATE.start_main_~__tmp_1~0#1|) (<= 100 |ULTIMATE.start_main_~main__x~0#1|) (<= ~__return_main~0 0) (<= 50 |ULTIMATE.start_main_~main__y~0#1|) (<= 0 ~__return_720~0) (<= ~__return_720~0 0) (<= 0 ~__return_main~0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:21:22,607 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:21:22,607 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:21:22,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103] total 256 [2021-11-23 03:21:22,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273465403] [2021-11-23 03:21:22,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:21:22,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 257 states [2021-11-23 03:21:22,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:21:22,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2021-11-23 03:21:22,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6674, Invalid=65418, Unknown=0, NotChecked=0, Total=72092 [2021-11-23 03:21:22,618 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand has 257 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 256 states have internal predecessors, (259), 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) [2021-11-23 03:21:36,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:21:36,996 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2021-11-23 03:21:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-11-23 03:21:36,996 INFO L78 Accepts]: Start accepts. Automaton has has 257 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 256 states have internal predecessors, (259), 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 104 [2021-11-23 03:21:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:21:36,997 INFO L225 Difference]: With dead ends: 107 [2021-11-23 03:21:36,997 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:21:37,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14553 ImplicationChecksByTransitivity, 66.0s TimeCoverageRelationStatistics Valid=6681, Invalid=65949, Unknown=0, NotChecked=0, Total=72630 [2021-11-23 03:21:37,001 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12828 mSolverCounterSat, 956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 12828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:21:37,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 13784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 12828 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2021-11-23 03:21:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:21:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:21:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:21:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:21:37,003 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2021-11-23 03:21:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:21:37,003 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:21:37,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 257 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 256 states have internal predecessors, (259), 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) [2021-11-23 03:21:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:21:37,004 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:21:37,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:21:37,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:21:37,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 03:21:37,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 03:21:38,517 INFO L854 garLoopResultBuilder]: At program point L159(lines 43 160) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~main__x~0#1| 5) (<= 5 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 50) (<= 50 |ULTIMATE.start_main_~main__y~0#1|)) [2021-11-23 03:21:38,518 INFO L854 garLoopResultBuilder]: At program point L135(lines 55 136) the Hoare annotation is: (and (<= 7 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 50) (<= 50 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 7)) [2021-11-23 03:21:38,518 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 103) no Hoare annotation was computed. [2021-11-23 03:21:38,518 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 03:21:38,520 INFO L854 garLoopResultBuilder]: At program point L111(lines 67 112) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~main__y~0#1| 50)) (.cse1 (<= 50 |ULTIMATE.start_main_~main__y~0#1|))) (or (and (<= |ULTIMATE.start_main_~main__x~0#1| 86) (<= 86 |ULTIMATE.start_main_~main__x~0#1|) (<= 86 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 86)) (and .cse0 (<= |ULTIMATE.start_main_~main__x~0#1| 26) .cse1 (<= 26 |ULTIMATE.start_main_~main__x~0#1|)) (and .cse0 (<= 10 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 10) .cse1) (and .cse0 (<= |ULTIMATE.start_main_~main__x~0#1| 18) .cse1 (<= 18 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= 43 |ULTIMATE.start_main_~main__x~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 43)) (and (<= 70 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 70) (<= |ULTIMATE.start_main_~main__x~0#1| 70) (<= 70 |ULTIMATE.start_main_~main__y~0#1|)) (and (<= 94 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 94) (<= 94 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 94)) (and .cse0 (<= 15 |ULTIMATE.start_main_~main__x~0#1|) .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 15)) (and .cse0 (<= |ULTIMATE.start_main_~main__x~0#1| 36) .cse1 (<= 36 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 75) (<= 75 |ULTIMATE.start_main_~main__x~0#1|) (<= 75 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 75)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 46) .cse0 (<= 46 |ULTIMATE.start_main_~main__x~0#1|) .cse1) (and (<= |ULTIMATE.start_main_~main__y~0#1| 55) (<= |ULTIMATE.start_main_~main__x~0#1| 55) (<= 55 |ULTIMATE.start_main_~main__y~0#1|) (<= 55 |ULTIMATE.start_main_~main__x~0#1|)) (and .cse0 (<= |ULTIMATE.start_main_~main__x~0#1| 30) .cse1 (<= 30 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= 33 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 33) .cse0 .cse1) (and (<= |ULTIMATE.start_main_~main__x~0#1| 9) .cse0 (<= 9 |ULTIMATE.start_main_~main__x~0#1|) .cse1) (and (<= 20 |ULTIMATE.start_main_~main__x~0#1|) .cse0 (<= |ULTIMATE.start_main_~main__x~0#1| 20) .cse1) (and (<= |ULTIMATE.start_main_~main__x~0#1| 11) (<= 11 |ULTIMATE.start_main_~main__x~0#1|) .cse0 .cse1) (and (<= 38 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 38) .cse0 .cse1) (and (<= |ULTIMATE.start_main_~main__x~0#1| 80) (<= 80 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 80) (<= 80 |ULTIMATE.start_main_~main__y~0#1|)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 40) .cse0 (<= 40 |ULTIMATE.start_main_~main__x~0#1|) .cse1) (and (<= 41 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 41) .cse0 .cse1) (and (<= 64 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 64) (<= 64 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 64)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 44) (<= 44 |ULTIMATE.start_main_~main__x~0#1|) .cse0 .cse1) (and .cse0 .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 35) (<= 35 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 12) .cse0 .cse1 (<= 12 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 58) (<= |ULTIMATE.start_main_~main__y~0#1| 58) (<= 58 |ULTIMATE.start_main_~main__x~0#1|) (<= 58 |ULTIMATE.start_main_~main__y~0#1|)) (and (<= 34 |ULTIMATE.start_main_~main__x~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 34)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 19) .cse0 .cse1 (<= 19 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= |ULTIMATE.start_main_~main__y~0#1| 81) (<= |ULTIMATE.start_main_~main__x~0#1| 81) (<= 81 |ULTIMATE.start_main_~main__x~0#1|) (<= 81 |ULTIMATE.start_main_~main__y~0#1|)) (and .cse0 (<= |ULTIMATE.start_main_~main__x~0#1| 28) (<= 28 |ULTIMATE.start_main_~main__x~0#1|) .cse1) (and (<= |ULTIMATE.start_main_~main__x~0#1| 100) (<= |ULTIMATE.start_main_~main__y~0#1| 100) (<= 100 |ULTIMATE.start_main_~main__x~0#1|) (<= 100 |ULTIMATE.start_main_~main__y~0#1|)) (and (<= 17 |ULTIMATE.start_main_~main__x~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 17)) (and (<= |ULTIMATE.start_main_~main__y~0#1| 74) (<= 74 |ULTIMATE.start_main_~main__x~0#1|) (<= 74 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 74)) (and (<= |ULTIMATE.start_main_~main__y~0#1| 62) (<= 62 |ULTIMATE.start_main_~main__y~0#1|) (<= 62 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 62)) (and (<= 25 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 25) .cse0 .cse1) (and (<= 92 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 92) (<= 92 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 92)) (and (<= 22 |ULTIMATE.start_main_~main__x~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 22)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 90) (<= |ULTIMATE.start_main_~main__y~0#1| 90) (<= 90 |ULTIMATE.start_main_~main__y~0#1|) (<= 90 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= 71 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 71) (<= 71 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 71)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 50) .cse0 (<= 50 |ULTIMATE.start_main_~main__x~0#1|) .cse1) (and (<= |ULTIMATE.start_main_~main__y~0#1| 89) (<= 89 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 89) (<= 89 |ULTIMATE.start_main_~main__x~0#1|)) (and .cse0 (<= 16 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 16) .cse1) (and .cse0 .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 13) (<= 13 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= |ULTIMATE.start_main_~main__y~0#1| 82) (<= 82 |ULTIMATE.start_main_~main__y~0#1|) (<= 82 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 82)) (and (<= |ULTIMATE.start_main_~main__y~0#1| 97) (<= |ULTIMATE.start_main_~main__x~0#1| 97) (<= 97 |ULTIMATE.start_main_~main__y~0#1|) (<= 97 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 57) (<= |ULTIMATE.start_main_~main__y~0#1| 57) (<= 57 |ULTIMATE.start_main_~main__x~0#1|) (<= 57 |ULTIMATE.start_main_~main__y~0#1|)) (and (<= 77 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 77) (<= 77 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 77)) (and (<= 98 |ULTIMATE.start_main_~main__x~0#1|) (<= 98 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 98) (<= |ULTIMATE.start_main_~main__y~0#1| 98)) (and .cse0 .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 21) (<= 21 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= |ULTIMATE.start_main_~main__y~0#1| 93) (<= 93 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 93) (<= 93 |ULTIMATE.start_main_~main__y~0#1|)) (and (<= 42 |ULTIMATE.start_main_~main__x~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 42)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 69) (<= 69 |ULTIMATE.start_main_~main__y~0#1|) (<= 69 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 69)) (and (<= |ULTIMATE.start_main_~main__y~0#1| 68) (<= 68 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 68) (<= 68 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= 72 |ULTIMATE.start_main_~main__y~0#1|) (<= 72 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 72) (<= |ULTIMATE.start_main_~main__x~0#1| 72)) (and (<= 56 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 56) (<= 56 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 56)) (and .cse0 .cse1 (<= 39 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 39)) (and (<= 99 |ULTIMATE.start_main_~main__y~0#1|) (<= 99 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 99) (<= |ULTIMATE.start_main_~main__x~0#1| 99)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 73) (<= 73 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 73) (<= 73 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 52) (<= 52 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 52) (<= 52 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= 88 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 88) (<= 88 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 88)) (and (<= 65 |ULTIMATE.start_main_~main__y~0#1|) (<= 65 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 65) (<= |ULTIMATE.start_main_~main__x~0#1| 65)) (and (<= |ULTIMATE.start_main_~main__y~0#1| 53) (<= 53 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 53) (<= 53 |ULTIMATE.start_main_~main__y~0#1|)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 59) (<= 59 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 59) (<= 59 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= 32 |ULTIMATE.start_main_~main__x~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 32)) (and (<= 84 |ULTIMATE.start_main_~main__y~0#1|) (<= 84 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 84) (<= |ULTIMATE.start_main_~main__y~0#1| 84)) (and (<= 67 |ULTIMATE.start_main_~main__y~0#1|) (<= 67 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 67) (<= |ULTIMATE.start_main_~main__y~0#1| 67)) (and (<= 51 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 51) (<= 51 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 51)) (and (<= 48 |ULTIMATE.start_main_~main__x~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 48)) (and (<= 83 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 83) (<= |ULTIMATE.start_main_~main__x~0#1| 83) (<= 83 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= 85 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 85) (<= 85 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 85)) (and (<= 79 |ULTIMATE.start_main_~main__x~0#1|) (<= 79 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 79) (<= |ULTIMATE.start_main_~main__y~0#1| 79)) (and (<= 63 |ULTIMATE.start_main_~main__y~0#1|) (<= 63 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 63) (<= |ULTIMATE.start_main_~main__y~0#1| 63)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 60) (<= 60 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 60) (<= 60 |ULTIMATE.start_main_~main__x~0#1|)) (and .cse0 .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 31) (<= 31 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 66) (<= |ULTIMATE.start_main_~main__y~0#1| 66) (<= 66 |ULTIMATE.start_main_~main__y~0#1|) (<= 66 |ULTIMATE.start_main_~main__x~0#1|)) (and .cse0 .cse1 (<= 23 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 23)) (and (<= 61 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 61) (<= 61 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 61)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 45) .cse0 (<= 45 |ULTIMATE.start_main_~main__x~0#1|) .cse1) (and (<= |ULTIMATE.start_main_~main__x~0#1| 78) (<= 78 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 78) (<= 78 |ULTIMATE.start_main_~main__y~0#1|)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 27) .cse0 .cse1 (<= 27 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 87) (<= 87 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 87) (<= 87 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= 29 |ULTIMATE.start_main_~main__x~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 29)) (and .cse0 .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 49) (<= 49 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= 91 |ULTIMATE.start_main_~main__x~0#1|) (<= 91 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 91) (<= |ULTIMATE.start_main_~main__y~0#1| 91)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 96) (<= |ULTIMATE.start_main_~main__y~0#1| 96) (<= 96 |ULTIMATE.start_main_~main__y~0#1|) (<= 96 |ULTIMATE.start_main_~main__x~0#1|)) (and .cse0 (<= 24 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 24) .cse1) (and (<= |ULTIMATE.start_main_~main__y~0#1| 54) (<= |ULTIMATE.start_main_~main__x~0#1| 54) (<= 54 |ULTIMATE.start_main_~main__y~0#1|) (<= 54 |ULTIMATE.start_main_~main__x~0#1|)) (and (<= |ULTIMATE.start_main_~main__y~0#1| 76) (<= 76 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 76) (<= 76 |ULTIMATE.start_main_~main__y~0#1|)) (and (<= |ULTIMATE.start_main_~main__x~0#1| 95) (<= 95 |ULTIMATE.start_main_~main__x~0#1|) (<= 95 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 95)) (and .cse0 (<= 37 |ULTIMATE.start_main_~main__x~0#1|) .cse1 (<= |ULTIMATE.start_main_~main__x~0#1| 37)) (and (<= 47 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 47) .cse0 .cse1) (and (<= |ULTIMATE.start_main_~main__x~0#1| 14) (<= 14 |ULTIMATE.start_main_~main__x~0#1|) .cse0 .cse1))) [2021-11-23 03:21:38,520 INFO L854 garLoopResultBuilder]: At program point L195(lines 25 196) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~main__x~0#1| 2) (<= |ULTIMATE.start_main_~main__y~0#1| 50) (<= 2 |ULTIMATE.start_main_~main__x~0#1|) (<= 50 |ULTIMATE.start_main_~main__y~0#1|)) [2021-11-23 03:21:38,520 INFO L858 garLoopResultBuilder]: For program point L96(line 96) no Hoare annotation was computed. [2021-11-23 03:21:38,520 INFO L861 garLoopResultBuilder]: At program point L212(lines 13 214) the Hoare annotation is: true [2021-11-23 03:21:38,521 INFO L854 garLoopResultBuilder]: At program point L171(lines 37 172) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~main__y~0#1| 50) (<= |ULTIMATE.start_main_~main__x~0#1| 4) (<= 50 |ULTIMATE.start_main_~main__y~0#1|) (<= 4 |ULTIMATE.start_main_~main__x~0#1|)) [2021-11-23 03:21:38,521 INFO L854 garLoopResultBuilder]: At program point L147(lines 49 148) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~main__y~0#1| 50) (<= 50 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 6) (<= 6 |ULTIMATE.start_main_~main__x~0#1|)) [2021-11-23 03:21:38,521 INFO L854 garLoopResultBuilder]: At program point L123(lines 61 124) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~main__x~0#1| 8) (<= |ULTIMATE.start_main_~main__y~0#1| 50) (<= 50 |ULTIMATE.start_main_~main__y~0#1|) (<= 8 |ULTIMATE.start_main_~main__x~0#1|)) [2021-11-23 03:21:38,521 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 96) no Hoare annotation was computed. [2021-11-23 03:21:38,521 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 03:21:38,521 INFO L858 garLoopResultBuilder]: For program point L17(lines 17 213) no Hoare annotation was computed. [2021-11-23 03:21:38,521 INFO L854 garLoopResultBuilder]: At program point L207(lines 19 208) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 50) (<= 50 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 1)) [2021-11-23 03:21:38,522 INFO L854 garLoopResultBuilder]: At program point L183(lines 31 184) the Hoare annotation is: (and (<= 3 |ULTIMATE.start_main_~main__x~0#1|) (<= |ULTIMATE.start_main_~main__y~0#1| 50) (<= 50 |ULTIMATE.start_main_~main__y~0#1|) (<= |ULTIMATE.start_main_~main__x~0#1| 3)) [2021-11-23 03:21:38,524 INFO L732 BasicCegarLoop]: Path program histogram: [5, 1] [2021-11-23 03:21:38,526 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:21:38,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:21:38 BoogieIcfgContainer [2021-11-23 03:21:38,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:21:38,579 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:21:38,579 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:21:38,580 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:21:38,580 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:18:32" (3/4) ... [2021-11-23 03:21:38,583 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 03:21:38,595 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-23 03:21:38,596 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 03:21:38,596 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 03:21:38,597 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:21:38,663 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:21:38,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:21:38,664 INFO L158 Benchmark]: Toolchain (without parser) took 186773.95ms. Allocated memory was 107.0MB in the beginning and 497.0MB in the end (delta: 390.1MB). Free memory was 70.6MB in the beginning and 403.5MB in the end (delta: -332.9MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2021-11-23 03:21:38,664 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 107.0MB. Free memory was 79.5MB in the beginning and 79.5MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:21:38,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.75ms. Allocated memory is still 107.0MB. Free memory was 70.5MB in the beginning and 81.2MB in the end (delta: -10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:21:38,665 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.40ms. Allocated memory is still 107.0MB. Free memory was 81.2MB in the beginning and 79.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:21:38,666 INFO L158 Benchmark]: Boogie Preprocessor took 21.60ms. Allocated memory is still 107.0MB. Free memory was 79.8MB in the beginning and 78.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:21:38,666 INFO L158 Benchmark]: RCFGBuilder took 509.51ms. Allocated memory is still 107.0MB. Free memory was 78.6MB in the beginning and 64.9MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 03:21:38,667 INFO L158 Benchmark]: TraceAbstraction took 185773.33ms. Allocated memory was 107.0MB in the beginning and 497.0MB in the end (delta: 390.1MB). Free memory was 64.4MB in the beginning and 408.7MB in the end (delta: -344.3MB). Peak memory consumption was 302.1MB. Max. memory is 16.1GB. [2021-11-23 03:21:38,667 INFO L158 Benchmark]: Witness Printer took 84.03ms. Allocated memory is still 497.0MB. Free memory was 408.7MB in the beginning and 403.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 03:21:38,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 107.0MB. Free memory was 79.5MB in the beginning and 79.5MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.75ms. Allocated memory is still 107.0MB. Free memory was 70.5MB in the beginning and 81.2MB in the end (delta: -10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.40ms. Allocated memory is still 107.0MB. Free memory was 81.2MB in the beginning and 79.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.60ms. Allocated memory is still 107.0MB. Free memory was 79.8MB in the beginning and 78.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 509.51ms. Allocated memory is still 107.0MB. Free memory was 78.6MB in the beginning and 64.9MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 185773.33ms. Allocated memory was 107.0MB in the beginning and 497.0MB in the end (delta: 390.1MB). Free memory was 64.4MB in the beginning and 408.7MB in the end (delta: -344.3MB). Peak memory consumption was 302.1MB. Max. memory is 16.1GB. * Witness Printer took 84.03ms. Allocated memory is still 497.0MB. Free memory was 408.7MB in the beginning and 403.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 96]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 185.7s, OverallIterations: 6, TraceHistogramMax: 91, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 17.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 16.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 14.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 1375 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18401 IncrementalHoareTripleChecker+Invalid, 19776 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1375 mSolverCounterUnsat, 16 mSDtfsCounter, 18401 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1161 GetRequests, 479 SyntacticMatches, 4 SemanticMatches, 678 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25420 ImplicationChecksByTransitivity, 87.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=5, InterpolantAutomatonStates: 386, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 103 NumberOfFragments, 1302 HoareAnnotationTreeSize, 10 FomulaSimplifications, 258 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 155.7s InterpolantComputationTime, 597 NumberOfCodeBlocks, 597 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 873 ConstructedInterpolants, 0 QuantifiedInterpolants, 20836 SizeOfPredicates, 7 NumberOfNonLiveVariables, 749 ConjunctsInSsa, 289 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 0/25908 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((3 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 3 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((main__x <= 86 && 86 <= main__x) && 86 <= main__y) && main__y <= 86) || (((main__y <= 50 && main__x <= 26) && 50 <= main__y) && 26 <= main__x)) || (((main__y <= 50 && 10 <= main__x) && main__x <= 10) && 50 <= main__y)) || (((main__y <= 50 && main__x <= 18) && 50 <= main__y) && 18 <= main__x)) || (((43 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 43)) || (((70 <= main__x && main__y <= 70) && main__x <= 70) && 70 <= main__y)) || (((94 <= main__y && main__y <= 94) && 94 <= main__x) && main__x <= 94)) || (((main__y <= 50 && 15 <= main__x) && 50 <= main__y) && main__x <= 15)) || (((main__y <= 50 && main__x <= 36) && 50 <= main__y) && 36 <= main__x)) || (((main__x <= 75 && 75 <= main__x) && 75 <= main__y) && main__y <= 75)) || (((main__x <= 46 && main__y <= 50) && 46 <= main__x) && 50 <= main__y)) || (((main__y <= 55 && main__x <= 55) && 55 <= main__y) && 55 <= main__x)) || (((main__y <= 50 && main__x <= 30) && 50 <= main__y) && 30 <= main__x)) || (((33 <= main__x && main__x <= 33) && main__y <= 50) && 50 <= main__y)) || (((main__x <= 9 && main__y <= 50) && 9 <= main__x) && 50 <= main__y)) || (((20 <= main__x && main__y <= 50) && main__x <= 20) && 50 <= main__y)) || (((main__x <= 11 && 11 <= main__x) && main__y <= 50) && 50 <= main__y)) || (((38 <= main__x && main__x <= 38) && main__y <= 50) && 50 <= main__y)) || (((main__x <= 80 && 80 <= main__x) && main__y <= 80) && 80 <= main__y)) || (((main__x <= 40 && main__y <= 50) && 40 <= main__x) && 50 <= main__y)) || (((41 <= main__x && main__x <= 41) && main__y <= 50) && 50 <= main__y)) || (((64 <= main__x && main__y <= 64) && 64 <= main__y) && main__x <= 64)) || (((main__x <= 44 && 44 <= main__x) && main__y <= 50) && 50 <= main__y)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 35) && 35 <= main__x)) || (((main__x <= 12 && main__y <= 50) && 50 <= main__y) && 12 <= main__x)) || (((main__x <= 58 && main__y <= 58) && 58 <= main__x) && 58 <= main__y)) || (((34 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 34)) || (((main__x <= 19 && main__y <= 50) && 50 <= main__y) && 19 <= main__x)) || (((main__y <= 81 && main__x <= 81) && 81 <= main__x) && 81 <= main__y)) || (((main__y <= 50 && main__x <= 28) && 28 <= main__x) && 50 <= main__y)) || (((main__x <= 100 && main__y <= 100) && 100 <= main__x) && 100 <= main__y)) || (((17 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 17)) || (((main__y <= 74 && 74 <= main__x) && 74 <= main__y) && main__x <= 74)) || (((main__y <= 62 && 62 <= main__y) && 62 <= main__x) && main__x <= 62)) || (((25 <= main__x && main__x <= 25) && main__y <= 50) && 50 <= main__y)) || (((92 <= main__y && main__x <= 92) && 92 <= main__x) && main__y <= 92)) || (((22 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 22)) || (((main__x <= 90 && main__y <= 90) && 90 <= main__y) && 90 <= main__x)) || (((71 <= main__x && main__y <= 71) && 71 <= main__y) && main__x <= 71)) || (((main__x <= 50 && main__y <= 50) && 50 <= main__x) && 50 <= main__y)) || (((main__y <= 89 && 89 <= main__y) && main__x <= 89) && 89 <= main__x)) || (((main__y <= 50 && 16 <= main__x) && main__x <= 16) && 50 <= main__y)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 13) && 13 <= main__x)) || (((main__y <= 82 && 82 <= main__y) && 82 <= main__x) && main__x <= 82)) || (((main__y <= 97 && main__x <= 97) && 97 <= main__y) && 97 <= main__x)) || (((main__x <= 57 && main__y <= 57) && 57 <= main__x) && 57 <= main__y)) || (((77 <= main__x && main__y <= 77) && 77 <= main__y) && main__x <= 77)) || (((98 <= main__x && 98 <= main__y) && main__x <= 98) && main__y <= 98)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 21) && 21 <= main__x)) || (((main__y <= 93 && 93 <= main__x) && main__x <= 93) && 93 <= main__y)) || (((42 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 42)) || (((main__x <= 69 && 69 <= main__y) && 69 <= main__x) && main__y <= 69)) || (((main__y <= 68 && 68 <= main__y) && main__x <= 68) && 68 <= main__x)) || (((72 <= main__y && 72 <= main__x) && main__y <= 72) && main__x <= 72)) || (((56 <= main__x && main__x <= 56) && 56 <= main__y) && main__y <= 56)) || (((main__y <= 50 && 50 <= main__y) && 39 <= main__x) && main__x <= 39)) || (((99 <= main__y && 99 <= main__x) && main__y <= 99) && main__x <= 99)) || (((main__x <= 73 && 73 <= main__y) && main__y <= 73) && 73 <= main__x)) || (((main__x <= 52 && 52 <= main__y) && main__y <= 52) && 52 <= main__x)) || (((88 <= main__x && main__x <= 88) && 88 <= main__y) && main__y <= 88)) || (((65 <= main__y && 65 <= main__x) && main__y <= 65) && main__x <= 65)) || (((main__y <= 53 && 53 <= main__x) && main__x <= 53) && 53 <= main__y)) || (((main__x <= 59 && 59 <= main__y) && main__y <= 59) && 59 <= main__x)) || (((32 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 32)) || (((84 <= main__y && 84 <= main__x) && main__x <= 84) && main__y <= 84)) || (((67 <= main__y && 67 <= main__x) && main__x <= 67) && main__y <= 67)) || (((51 <= main__y && main__y <= 51) && 51 <= main__x) && main__x <= 51)) || (((48 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 48)) || (((83 <= main__y && main__y <= 83) && main__x <= 83) && 83 <= main__x)) || (((85 <= main__y && main__x <= 85) && 85 <= main__x) && main__y <= 85)) || (((79 <= main__x && 79 <= main__y) && main__x <= 79) && main__y <= 79)) || (((63 <= main__y && 63 <= main__x) && main__x <= 63) && main__y <= 63)) || (((main__x <= 60 && 60 <= main__y) && main__y <= 60) && 60 <= main__x)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 31) && 31 <= main__x)) || (((main__x <= 66 && main__y <= 66) && 66 <= main__y) && 66 <= main__x)) || (((main__y <= 50 && 50 <= main__y) && 23 <= main__x) && main__x <= 23)) || (((61 <= main__y && main__x <= 61) && 61 <= main__x) && main__y <= 61)) || (((main__x <= 45 && main__y <= 50) && 45 <= main__x) && 50 <= main__y)) || (((main__x <= 78 && 78 <= main__x) && main__y <= 78) && 78 <= main__y)) || (((main__x <= 27 && main__y <= 50) && 50 <= main__y) && 27 <= main__x)) || (((main__x <= 87 && 87 <= main__y) && main__y <= 87) && 87 <= main__x)) || (((29 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 29)) || (((main__y <= 50 && 50 <= main__y) && main__x <= 49) && 49 <= main__x)) || (((91 <= main__x && 91 <= main__y) && main__x <= 91) && main__y <= 91)) || (((main__x <= 96 && main__y <= 96) && 96 <= main__y) && 96 <= main__x)) || (((main__y <= 50 && 24 <= main__x) && main__x <= 24) && 50 <= main__y)) || (((main__y <= 54 && main__x <= 54) && 54 <= main__y) && 54 <= main__x)) || (((main__y <= 76 && 76 <= main__x) && main__x <= 76) && 76 <= main__y)) || (((main__x <= 95 && 95 <= main__x) && 95 <= main__y) && main__y <= 95)) || (((main__y <= 50 && 37 <= main__x) && 50 <= main__y) && main__x <= 37)) || (((47 <= main__x && main__x <= 47) && main__y <= 50) && 50 <= main__y)) || (((main__x <= 14 && 14 <= main__x) && main__y <= 50) && 50 <= main__y) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((7 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 7 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((1 <= main__x && main__y <= 50) && 50 <= main__y) && main__x <= 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((main__x <= 2 && main__y <= 50) && 2 <= main__x) && 50 <= main__y - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: ((main__x <= 8 && main__y <= 50) && 50 <= main__y) && 8 <= main__x - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: ((main__x <= 5 && 5 <= main__x) && main__y <= 50) && 50 <= main__y - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((main__y <= 50 && 50 <= main__y) && main__x <= 6) && 6 <= main__x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((main__y <= 50 && main__x <= 4) && 50 <= main__y) && 4 <= main__x RESULT: Ultimate proved your program to be correct! [2021-11-23 03:21:38,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7571ab25-5e77-45d4-9b02-39ec8bb43727/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE