./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/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_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8 --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-47ea020 [2021-11-07 00:52:55,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:52:55,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:52:55,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:52:55,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:52:55,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:52:55,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:52:55,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:52:55,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:52:55,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:52:55,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:52:55,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:52:55,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:52:55,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:52:55,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:52:55,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:52:55,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:52:55,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:52:55,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:52:55,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:52:55,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:52:55,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:52:55,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:52:55,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:52:55,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:52:55,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:52:55,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:52:55,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:52:55,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:52:55,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:52:55,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:52:55,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:52:55,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:52:55,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:52:55,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:52:55,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:52:55,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:52:55,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:52:55,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:52:55,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:52:55,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:52:55,943 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:52:56,007 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:52:56,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:52:56,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:52:56,009 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:52:56,009 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:52:56,009 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:52:56,010 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:52:56,010 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:52:56,014 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:52:56,014 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:52:56,014 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:52:56,015 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:52:56,015 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:52:56,015 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:52:56,015 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:52:56,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:52:56,016 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:52:56,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:52:56,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:52:56,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:52:56,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:52:56,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:52:56,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:52:56,018 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:52:56,018 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:52:56,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:52:56,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:52:56,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:52:56,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:52:56,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:52:56,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:52:56,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:52:56,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:52:56,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:52:56,020 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:52:56,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:52:56,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:52:56,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:52:56,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:52:56,026 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_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ae3736aabcb020d122100864e41791456e1f94490735ab1a93eef5c54883fe7 [2021-11-07 00:52:56,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:52:56,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:52:56,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:52:56,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:52:56,415 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:52:56,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c [2021-11-07 00:52:56,515 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/data/0d1598ddd/35be659fd8ef45d9a1e02f80649418cf/FLAG916426bdc [2021-11-07 00:52:57,023 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:52:57,037 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c [2021-11-07 00:52:57,048 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/data/0d1598ddd/35be659fd8ef45d9a1e02f80649418cf/FLAG916426bdc [2021-11-07 00:52:57,401 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/data/0d1598ddd/35be659fd8ef45d9a1e02f80649418cf [2021-11-07 00:52:57,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:52:57,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:52:57,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:52:57,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:52:57,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:52:57,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:57" (1/1) ... [2021-11-07 00:52:57,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733b8c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57, skipping insertion in model container [2021-11-07 00:52:57,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:57" (1/1) ... [2021-11-07 00:52:57,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:52:57,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:52:57,632 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2021-11-07 00:52:57,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:52:57,674 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:52:57,728 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2021-11-07 00:52:57,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:52:57,751 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:52:57,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57 WrapperNode [2021-11-07 00:52:57,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:52:57,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:52:57,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:52:57,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:52:57,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57" (1/1) ... [2021-11-07 00:52:57,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57" (1/1) ... [2021-11-07 00:52:57,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:52:57,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:52:57,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:52:57,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:52:57,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57" (1/1) ... [2021-11-07 00:52:57,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57" (1/1) ... [2021-11-07 00:52:57,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57" (1/1) ... [2021-11-07 00:52:57,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57" (1/1) ... [2021-11-07 00:52:57,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57" (1/1) ... [2021-11-07 00:52:57,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57" (1/1) ... [2021-11-07 00:52:57,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57" (1/1) ... [2021-11-07 00:52:57,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:52:57,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:52:57,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:52:57,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:52:57,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57" (1/1) ... [2021-11-07 00:52:57,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:52:57,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:52:57,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:52:57,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:52:57,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 00:52:57,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:52:57,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:52:57,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:52:58,390 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:52:58,390 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-07 00:52:58,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:58 BoogieIcfgContainer [2021-11-07 00:52:58,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:52:58,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:52:58,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:52:58,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:52:58,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:57" (1/3) ... [2021-11-07 00:52:58,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a91eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:58, skipping insertion in model container [2021-11-07 00:52:58,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57" (2/3) ... [2021-11-07 00:52:58,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a91eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:58, skipping insertion in model container [2021-11-07 00:52:58,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:58" (3/3) ... [2021-11-07 00:52:58,418 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+lhb-reducer.c [2021-11-07 00:52:58,429 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:52:58,429 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 00:52:58,504 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:52:58,515 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 [2021-11-07 00:52:58,515 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 00:52:58,534 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) [2021-11-07 00:52:58,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 00:52:58,541 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:52:58,541 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:52:58,542 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:52:58,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:52:58,549 INFO L85 PathProgramCache]: Analyzing trace with hash -255100683, now seen corresponding path program 1 times [2021-11-07 00:52:58,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:52:58,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547508849] [2021-11-07 00:52:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:52:58,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:52:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:52:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:52:59,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:52:59,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547508849] [2021-11-07 00:52:59,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547508849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:52:59,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:52:59,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 00:52:59,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320977895] [2021-11-07 00:52:59,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 00:52:59,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:52:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 00:52:59,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:52:59,159 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) [2021-11-07 00:52:59,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:52:59,350 INFO L93 Difference]: Finished difference Result 22 states and 33 transitions. [2021-11-07 00:52:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 00:52:59,353 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 [2021-11-07 00:52:59,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:52:59,364 INFO L225 Difference]: With dead ends: 22 [2021-11-07 00:52:59,365 INFO L226 Difference]: Without dead ends: 15 [2021-11-07 00:52:59,373 INFO L786 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 [2021-11-07 00:52:59,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-07 00:52:59,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-07 00:52:59,406 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) [2021-11-07 00:52:59,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-07 00:52:59,408 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-11-07 00:52:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:52:59,409 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-07 00:52:59,409 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) [2021-11-07 00:52:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-07 00:52:59,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 00:52:59,410 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:52:59,411 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:52:59,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 00:52:59,411 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:52:59,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:52:59,412 INFO L85 PathProgramCache]: Analyzing trace with hash 683478881, now seen corresponding path program 1 times [2021-11-07 00:52:59,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:52:59,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064537304] [2021-11-07 00:52:59,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:52:59,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:52:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:52:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:52:59,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:52:59,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064537304] [2021-11-07 00:52:59,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064537304] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:52:59,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729707042] [2021-11-07 00:52:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:52:59,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:52:59,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:52:59,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:52:59,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 00:52:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:52:59,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 00:52:59,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:52:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:52:59,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:00,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729707042] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:53:00,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1275308829] [2021-11-07 00:53:00,597 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-07 00:53:00,597 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 00:53:00,601 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 00:53:00,607 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 00:53:00,607 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 00:53:00,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:00,641 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:00,642 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:00,643 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:53:00,643 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:00,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:00,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 00:53:00,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 00:53:00,667 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-11-07 00:53:00,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:00,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:00,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:00,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 00:53:00,689 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:00,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:53:00,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:00,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:53:00,693 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:53:00,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:00,717 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:00,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:00,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:00,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:00,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:00,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:00,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:00,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:00,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:00,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:00,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 00:53:00,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:00,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 00:53:00,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:00,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 00:53:00,754 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:53:00,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:00,781 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:00,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:00,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:00,786 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:53:00,786 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:128, output treesize:103 [2021-11-07 00:53:00,802 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:00,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:00,818 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:00,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:00,832 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:00,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:00,845 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:00,854 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:00,865 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:00,869 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:00,875 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:00,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:00,889 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:00,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:00,901 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:00,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:00,910 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:00,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:00,922 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:00,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:00,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:00,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:01,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:01,080 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:01,084 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:01,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:01,112 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-07 00:53:01,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 00:53:01,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:01,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:01,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:01,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:01,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:01,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:01,248 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-07 00:53:01,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 00:53:01,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:01,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:01,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:01,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:01,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:01,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:01,297 INFO L180 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-11-07 00:53:01,299 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:01,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:01,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:53:01,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 00:53:01,319 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 00:53:02,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:53:02,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 00:53:02,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2021-11-07 00:53:02,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816069859] [2021-11-07 00:53:02,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 00:53:02,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:02,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 00:53:02,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=842, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 00:53:02,826 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:02,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:02,901 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2021-11-07 00:53:02,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 00:53:02,902 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-07 00:53:02,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:02,903 INFO L225 Difference]: With dead ends: 30 [2021-11-07 00:53:02,903 INFO L226 Difference]: Without dead ends: 27 [2021-11-07 00:53:02,904 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=490, Invalid=842, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 00:53:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-07 00:53:02,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-07 00:53:02,908 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) [2021-11-07 00:53:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-11-07 00:53:02,909 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2021-11-07 00:53:02,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:02,910 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-11-07 00:53:02,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-11-07 00:53:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 00:53:02,911 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:02,911 INFO L513 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:02,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 00:53:03,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:53:03,130 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:03,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash -972358047, now seen corresponding path program 2 times [2021-11-07 00:53:03,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:03,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653258911] [2021-11-07 00:53:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:03,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:03,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:03,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653258911] [2021-11-07 00:53:03,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653258911] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:53:03,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476845876] [2021-11-07 00:53:03,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:53:03,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:53:03,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:03,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:53:03,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 00:53:03,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 00:53:03,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:53:03,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 00:53:03,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:03,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:05,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476845876] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:53:05,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2113937888] [2021-11-07 00:53:05,262 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-07 00:53:05,262 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 00:53:05,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 00:53:05,262 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 00:53:05,262 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 00:53:05,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:05,278 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:05,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:05,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:53:05,281 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:05,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:05,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 00:53:05,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 00:53:05,289 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-11-07 00:53:05,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:05,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:05,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:05,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 00:53:05,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:05,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:53:05,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:05,309 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:53:05,309 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:53:05,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:05,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:05,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:05,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:05,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:05,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:05,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:05,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:05,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:05,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:05,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 00:53:05,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:05,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 00:53:05,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:05,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 00:53:05,348 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:53:05,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,355 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:05,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:05,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:05,378 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:53:05,379 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:128, output treesize:103 [2021-11-07 00:53:05,383 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:05,386 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:05,391 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:05,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:05,399 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:05,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:05,406 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:05,408 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:05,414 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:05,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:05,421 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:05,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:05,427 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:05,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:05,435 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:05,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:05,441 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:05,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:05,447 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:05,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:05,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:05,515 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:05,518 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:05,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 450 [2021-11-07 00:53:05,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 504 [2021-11-07 00:53:05,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,665 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.1 percent of original size [2021-11-07 00:53:05,674 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:05,675 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:05,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 00:53:05,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-07 00:53:05,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:05,716 INFO L180 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-11-07 00:53:05,718 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:05,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:05,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:53:05,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 00:53:05,751 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 00:53:07,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:53:07,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 00:53:07,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2021-11-07 00:53:07,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444195599] [2021-11-07 00:53:07,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 00:53:07,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:07,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 00:53:07,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1582, Invalid=2078, Unknown=0, NotChecked=0, Total=3660 [2021-11-07 00:53:07,111 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:07,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:07,251 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2021-11-07 00:53:07,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 00:53:07,251 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-07 00:53:07,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:07,253 INFO L225 Difference]: With dead ends: 54 [2021-11-07 00:53:07,253 INFO L226 Difference]: Without dead ends: 51 [2021-11-07 00:53:07,254 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1582, Invalid=2078, Unknown=0, NotChecked=0, Total=3660 [2021-11-07 00:53:07,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-07 00:53:07,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-07 00:53:07,266 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) [2021-11-07 00:53:07,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-11-07 00:53:07,269 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2021-11-07 00:53:07,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:07,270 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-11-07 00:53:07,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:07,270 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-11-07 00:53:07,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 00:53:07,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:07,274 INFO L513 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:07,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 00:53:07,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:53:07,497 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash 152788065, now seen corresponding path program 3 times [2021-11-07 00:53:07,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:07,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3246970] [2021-11-07 00:53:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:07,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:08,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:08,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3246970] [2021-11-07 00:53:08,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3246970] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:53:08,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445226676] [2021-11-07 00:53:08,624 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 00:53:08,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:53:08,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:08,625 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:53:08,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 00:53:08,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 00:53:08,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:53:08,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-07 00:53:08,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:09,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:12,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445226676] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:53:12,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2082473294] [2021-11-07 00:53:12,775 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-07 00:53:12,775 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 00:53:12,776 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 00:53:12,776 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 00:53:12,776 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 00:53:12,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:12,786 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:12,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:12,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:53:12,787 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:12,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:12,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 00:53:12,789 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 00:53:12,792 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 21=[|v_#valid_12|]} [2021-11-07 00:53:12,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:12,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:12,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:12,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 00:53:12,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:12,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:53:12,803 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:12,804 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:53:12,804 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:53:12,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:12,810 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:12,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:12,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:12,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:12,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:12,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:12,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:12,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:12,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:12,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:12,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 00:53:12,827 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:12,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 00:53:12,829 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:12,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 00:53:12,830 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:53:12,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:12,836 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:12,837 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:12,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:12,838 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:53:12,839 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:128, output treesize:103 [2021-11-07 00:53:12,844 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:12,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:12,850 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:12,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:12,856 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:12,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:12,864 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:12,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:12,870 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:12,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:12,876 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:12,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:12,882 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:12,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:12,888 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:12,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:12,895 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:12,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:12,900 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:12,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:12,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:12,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:12,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:12,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:12,965 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:12,967 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:12,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-07 00:53:12,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 00:53:12,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:13,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:13,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:13,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:13,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:13,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:13,054 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-07 00:53:13,058 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 00:53:13,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:13,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:13,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:13,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:13,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:13,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:13,114 INFO L180 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-11-07 00:53:13,115 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:13,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:13,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:53:13,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 00:53:13,126 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 00:53:14,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:53:14,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 00:53:14,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 96 [2021-11-07 00:53:14,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962167256] [2021-11-07 00:53:14,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-11-07 00:53:14,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:14,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-11-07 00:53:14,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5494, Invalid=6278, Unknown=0, NotChecked=0, Total=11772 [2021-11-07 00:53:14,336 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 97 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 96 states have internal predecessors, (100), 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) [2021-11-07 00:53:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:14,642 INFO L93 Difference]: Finished difference Result 102 states and 149 transitions. [2021-11-07 00:53:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-07 00:53:14,643 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 96 states have internal predecessors, (100), 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 [2021-11-07 00:53:14,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:14,646 INFO L225 Difference]: With dead ends: 102 [2021-11-07 00:53:14,647 INFO L226 Difference]: Without dead ends: 99 [2021-11-07 00:53:14,650 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2316 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=5494, Invalid=6278, Unknown=0, NotChecked=0, Total=11772 [2021-11-07 00:53:14,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-07 00:53:14,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-11-07 00:53:14,666 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) [2021-11-07 00:53:14,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2021-11-07 00:53:14,668 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 50 [2021-11-07 00:53:14,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:14,668 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2021-11-07 00:53:14,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 96 states have internal predecessors, (100), 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) [2021-11-07 00:53:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2021-11-07 00:53:14,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 00:53:14,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:14,672 INFO L513 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:14,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:14,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:53:14,882 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:14,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1108220001, now seen corresponding path program 4 times [2021-11-07 00:53:14,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:14,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630397875] [2021-11-07 00:53:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:14,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:19,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:19,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630397875] [2021-11-07 00:53:19,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630397875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:53:19,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975968470] [2021-11-07 00:53:19,296 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 00:53:19,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:53:19,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:19,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:53:19,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 00:53:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:19,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-07 00:53:19,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:20,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:30,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975968470] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:53:30,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1939504389] [2021-11-07 00:53:30,890 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-07 00:53:30,890 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 00:53:30,890 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 00:53:30,890 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 00:53:30,891 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 00:53:30,907 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:30,907 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:30,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:30,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 00:53:30,917 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:30,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:30,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:53:30,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 00:53:30,924 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 21=[|v_#valid_13|]} [2021-11-07 00:53:30,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:30,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:30,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:30,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 00:53:30,933 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:30,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:53:30,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:30,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:53:30,936 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:53:30,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:30,958 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:30,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:30,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:30,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:30,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:30,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:30,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:30,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:30,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:30,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:53:30,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 00:53:30,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:30,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 00:53:30,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:30,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 00:53:30,978 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:53:30,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:30,994 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:30,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:30,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:30,997 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:53:30,998 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:128, output treesize:103 [2021-11-07 00:53:31,003 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:31,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:31,011 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:31,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:31,017 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:31,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:31,023 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:31,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:31,028 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:31,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:31,036 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:31,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:31,041 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:31,043 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:31,047 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:31,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:31,052 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:31,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:31,064 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:53:31,066 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:53:31,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,114 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:31,117 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:31,119 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:31,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-07 00:53:31,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 00:53:31,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,193 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-07 00:53:31,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 00:53:31,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:31,220 INFO L180 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-11-07 00:53:31,221 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:53:31,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:53:31,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:53:31,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 00:53:31,231 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 00:53:34,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:53:34,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 00:53:34,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-11-07 00:53:34,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873979815] [2021-11-07 00:53:34,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-07 00:53:34,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:34,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-07 00:53:34,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10751, Invalid=30661, Unknown=0, NotChecked=0, Total=41412 [2021-11-07 00:53:34,259 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) [2021-11-07 00:53:36,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:36,597 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2021-11-07 00:53:36,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-07 00:53:36,598 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 [2021-11-07 00:53:36,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:36,599 INFO L225 Difference]: With dead ends: 108 [2021-11-07 00:53:36,599 INFO L226 Difference]: Without dead ends: 105 [2021-11-07 00:53:36,603 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7241 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=10751, Invalid=30661, Unknown=0, NotChecked=0, Total=41412 [2021-11-07 00:53:36,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-07 00:53:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-11-07 00:53:36,613 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) [2021-11-07 00:53:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2021-11-07 00:53:36,614 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2021-11-07 00:53:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:36,615 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2021-11-07 00:53:36,615 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) [2021-11-07 00:53:36,616 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2021-11-07 00:53:36,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 00:53:36,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:36,618 INFO L513 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:36,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:36,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-07 00:53:36,826 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:36,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:36,826 INFO L85 PathProgramCache]: Analyzing trace with hash 947134433, now seen corresponding path program 5 times [2021-11-07 00:53:36,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:36,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362210821] [2021-11-07 00:53:36,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:36,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:42,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:42,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362210821] [2021-11-07 00:53:42,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362210821] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:53:42,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009331260] [2021-11-07 00:53:42,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:53:42,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:53:42,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:42,599 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:53:42,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 00:53:43,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-07 00:53:43,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:53:43,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 108 conjunts are in the unsatisfiable core [2021-11-07 00:53:43,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:49,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:07,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009331260] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:56:07,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [778861428] [2021-11-07 00:56:07,177 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-07 00:56:07,177 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 00:56:07,177 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 00:56:07,178 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 00:56:07,178 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 00:56:07,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:56:07,188 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:56:07,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:56:07,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:56:07,190 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:56:07,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:56:07,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 00:56:07,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-07 00:56:07,194 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-11-07 00:56:07,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:56:07,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:56:07,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:56:07,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 00:56:07,204 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:56:07,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:56:07,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:56:07,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:56:07,206 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:56:07,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,210 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:56:07,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:56:07,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:56:07,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:56:07,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:56:07,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:56:07,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:56:07,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:56:07,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:56:07,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:56:07,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 00:56:07,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:56:07,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 00:56:07,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:56:07,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 00:56:07,230 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:56:07,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,234 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:56:07,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:56:07,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:56:07,236 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:56:07,237 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:128, output treesize:103 [2021-11-07 00:56:07,240 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:56:07,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:56:07,246 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:56:07,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:56:07,252 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:56:07,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:56:07,257 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:56:07,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:56:07,263 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:56:07,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:56:07,269 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:56:07,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:56:07,274 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:56:07,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:56:07,280 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:56:07,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:56:07,285 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:56:07,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:56:07,290 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-11-07 00:56:07,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-07 00:56:07,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:56:07,333 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:56:07,336 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:56:07,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 213 [2021-11-07 00:56:07,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-11-07 00:56:07,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,395 INFO L180 QuantifierPusher]: treesize reduction 48, result has 60.0 percent of original size [2021-11-07 00:56:07,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 00:56:07,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:07,419 INFO L180 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-11-07 00:56:07,420 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:56:07,420 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:56:07,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-07 00:56:07,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-07 00:56:07,429 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 00:56:11,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:56:11,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 00:56:11,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103] total 256 [2021-11-07 00:56:11,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372037095] [2021-11-07 00:56:11,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 257 states [2021-11-07 00:56:11,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:56:11,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2021-11-07 00:56:11,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6674, Invalid=65418, Unknown=0, NotChecked=0, Total=72092 [2021-11-07 00:56:11,874 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) [2021-11-07 00:56:25,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:25,242 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2021-11-07 00:56:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-11-07 00:56:25,242 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 [2021-11-07 00:56:25,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:25,243 INFO L225 Difference]: With dead ends: 107 [2021-11-07 00:56:25,243 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 00:56:25,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 143 SyntacticMatches, 3 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14553 ImplicationChecksByTransitivity, 64.2s TimeCoverageRelationStatistics Valid=6681, Invalid=65949, Unknown=0, NotChecked=0, Total=72630 [2021-11-07 00:56:25,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 00:56:25,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 00:56:25,248 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) [2021-11-07 00:56:25,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 00:56:25,248 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2021-11-07 00:56:25,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:25,248 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 00:56:25,249 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) [2021-11-07 00:56:25,249 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 00:56:25,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 00:56:25,252 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 00:56:25,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-07 00:56:25,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-11-07 00:56:25,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 00:56:25,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:25,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:25,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:25,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:25,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:25,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:25,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:25,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:25,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:25,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:56:27,883 INFO L853 garLoopResultBuilder]: At program point L159(lines 43 160) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 5) (<= 5 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-11-07 00:56:27,883 INFO L853 garLoopResultBuilder]: At program point L135(lines 55 136) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 7) (<= 7 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-11-07 00:56:27,883 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 103) no Hoare annotation was computed. [2021-11-07 00:56:27,883 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 00:56:27,883 INFO L853 garLoopResultBuilder]: At program point L111(lines 67 112) the Hoare annotation is: (let ((.cse0 (<= 50 ULTIMATE.start_main_~main__y~0)) (.cse1 (<= ULTIMATE.start_main_~main__y~0 50))) (or (and .cse0 (<= 17 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 17) .cse1) (and .cse0 (<= 30 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 30) .cse1) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 15) (<= 15 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 51 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 51) (<= 51 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 51)) (and (<= 57 ULTIMATE.start_main_~main__y~0) (<= 57 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 57) (<= ULTIMATE.start_main_~main__y~0 57)) (and (<= ULTIMATE.start_main_~main__x~0 10) .cse0 (<= 10 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 94 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 94) (<= ULTIMATE.start_main_~main__x~0 94) (<= 94 ULTIMATE.start_main_~main__y~0)) (and (<= 99 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 99) (<= 99 ULTIMATE.start_main_~main__x~0) (< ULTIMATE.start_main_~main__x~0 100)) (and (<= ULTIMATE.start_main_~main__y~0 83) (<= ULTIMATE.start_main_~main__x~0 83) (<= 83 ULTIMATE.start_main_~main__x~0) (<= 83 ULTIMATE.start_main_~main__y~0)) (and (<= 89 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 89) (<= 89 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 89)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 39) (<= 39 ULTIMATE.start_main_~main__x~0) .cse1) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 29) (<= 29 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 46 ULTIMATE.start_main_~main__x~0) .cse0 (<= ULTIMATE.start_main_~main__x~0 46) .cse1) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 40) .cse1 (<= 40 ULTIMATE.start_main_~main__x~0)) (and (<= 53 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 53) (<= 53 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 53)) (and (<= 28 ULTIMATE.start_main_~main__x~0) .cse0 (<= ULTIMATE.start_main_~main__x~0 28) .cse1) (and (<= 60 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 60) (<= 60 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 60)) (and (<= ULTIMATE.start_main_~main__y~0 56) (<= 56 ULTIMATE.start_main_~main__y~0) (<= 56 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 56)) (and (<= 12 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 12) .cse0 .cse1) (and (<= ULTIMATE.start_main_~main__x~0 88) (<= ULTIMATE.start_main_~main__y~0 88) (<= 88 ULTIMATE.start_main_~main__x~0) (<= 88 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 66) (<= 66 ULTIMATE.start_main_~main__x~0) (<= 66 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 66)) (and (<= 85 ULTIMATE.start_main_~main__x~0) (<= 85 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 85) (<= ULTIMATE.start_main_~main__y~0 85)) (and (<= ULTIMATE.start_main_~main__x~0 19) (<= 19 ULTIMATE.start_main_~main__x~0) .cse0 .cse1) (and (<= ULTIMATE.start_main_~main__x~0 43) .cse0 (<= 43 ULTIMATE.start_main_~main__x~0) .cse1) (and .cse0 (<= 22 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 22) .cse1) (and (<= 64 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 64) (<= 64 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 64)) (and (<= ULTIMATE.start_main_~main__y~0 59) (<= ULTIMATE.start_main_~main__x~0 59) (<= 59 ULTIMATE.start_main_~main__x~0) (<= 59 ULTIMATE.start_main_~main__y~0)) (and .cse0 (<= 16 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 16) .cse1) (and (<= 81 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 81) (<= 81 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 81)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 33) (<= 33 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 77 ULTIMATE.start_main_~main__x~0) (<= 77 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 77) (<= ULTIMATE.start_main_~main__y~0 77)) (and (<= 93 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 93) (<= ULTIMATE.start_main_~main__y~0 93) (<= 93 ULTIMATE.start_main_~main__y~0)) (and (<= 70 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 70) (<= ULTIMATE.start_main_~main__y~0 70) (<= 70 ULTIMATE.start_main_~main__x~0)) (and .cse0 (<= 25 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 25) .cse1) (and (<= ULTIMATE.start_main_~main__x~0 26) .cse0 (<= 26 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 23 ULTIMATE.start_main_~main__x~0) .cse0 .cse1 (<= ULTIMATE.start_main_~main__x~0 23)) (and (<= 54 ULTIMATE.start_main_~main__x~0) (<= 54 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 54) (<= ULTIMATE.start_main_~main__x~0 54)) (and (<= 98 ULTIMATE.start_main_~main__y~0) (<= 98 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 98) (< ULTIMATE.start_main_~main__x~0 99)) (and (<= 95 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 95) (<= ULTIMATE.start_main_~main__x~0 95) (<= 95 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 69) (<= 69 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 69) (<= 69 ULTIMATE.start_main_~main__x~0)) (and (<= ULTIMATE.start_main_~main__x~0 72) (<= ULTIMATE.start_main_~main__y~0 72) (<= 72 ULTIMATE.start_main_~main__y~0) (<= 72 ULTIMATE.start_main_~main__x~0)) (and (<= 9 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 9) .cse0 .cse1) (and (<= 91 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 91) (<= 91 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 91)) (and (<= ULTIMATE.start_main_~main__y~0 52) (<= 52 ULTIMATE.start_main_~main__y~0) (<= 52 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 52)) (and (<= 96 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 96) (<= 96 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 96)) (and (<= 82 ULTIMATE.start_main_~main__y~0) (<= 82 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 82) (<= ULTIMATE.start_main_~main__x~0 82)) (and (<= 97 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 97) (<= 97 ULTIMATE.start_main_~main__x~0) (< ULTIMATE.start_main_~main__x~0 98)) (and (<= 37 ULTIMATE.start_main_~main__x~0) .cse0 (<= ULTIMATE.start_main_~main__x~0 37) .cse1) (and (<= ULTIMATE.start_main_~main__x~0 76) (<= 76 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 76) (<= 76 ULTIMATE.start_main_~main__y~0)) (and (<= 65 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 65) (<= ULTIMATE.start_main_~main__y~0 65) (<= 65 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 67) (<= 67 ULTIMATE.start_main_~main__x~0) (<= 67 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 67)) (and (<= 100 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 100) (<= 100 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 100)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 45) (<= 45 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 61 ULTIMATE.start_main_~main__x~0) (<= 61 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 61) (<= ULTIMATE.start_main_~main__y~0 61)) (and (<= ULTIMATE.start_main_~main__x~0 75) (<= ULTIMATE.start_main_~main__y~0 75) (<= 75 ULTIMATE.start_main_~main__y~0) (<= 75 ULTIMATE.start_main_~main__x~0)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 34) (<= 34 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= ULTIMATE.start_main_~main__x~0 58) (<= 58 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 58) (<= 58 ULTIMATE.start_main_~main__y~0)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 18) .cse1 (<= 18 ULTIMATE.start_main_~main__x~0)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 36) (<= 36 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 11 ULTIMATE.start_main_~main__x~0) .cse0 (<= ULTIMATE.start_main_~main__x~0 11) .cse1) (and .cse0 (<= 42 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 42) .cse1) (and .cse0 (<= 14 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 14) .cse1) (and (<= ULTIMATE.start_main_~main__y~0 78) (<= 78 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 78) (<= 78 ULTIMATE.start_main_~main__y~0)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 47) (<= 47 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= ULTIMATE.start_main_~main__x~0 38) .cse0 (<= 38 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= ULTIMATE.start_main_~main__y~0 68) (<= ULTIMATE.start_main_~main__x~0 68) (<= 68 ULTIMATE.start_main_~main__x~0) (<= 68 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 86) (<= ULTIMATE.start_main_~main__y~0 86) (<= 86 ULTIMATE.start_main_~main__x~0) (<= 86 ULTIMATE.start_main_~main__y~0)) (and (<= 32 ULTIMATE.start_main_~main__x~0) .cse0 (<= ULTIMATE.start_main_~main__x~0 32) .cse1) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 31) (<= 31 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 20 ULTIMATE.start_main_~main__x~0) .cse0 (<= ULTIMATE.start_main_~main__x~0 20) .cse1) (and (<= ULTIMATE.start_main_~main__x~0 63) (<= 63 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 63) (<= 63 ULTIMATE.start_main_~main__x~0)) (and (<= 79 ULTIMATE.start_main_~main__y~0) (<= 79 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 79) (<= ULTIMATE.start_main_~main__y~0 79)) (and .cse0 (<= 24 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 24) .cse1) (and (<= 90 ULTIMATE.start_main_~main__x~0) (<= 90 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 90) (<= ULTIMATE.start_main_~main__x~0 90)) (and .cse0 (<= 21 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 21) .cse1) (and (<= ULTIMATE.start_main_~main__x~0 35) (<= 35 ULTIMATE.start_main_~main__x~0) .cse0 .cse1) (and (<= ULTIMATE.start_main_~main__x~0 87) (<= ULTIMATE.start_main_~main__y~0 87) (<= 87 ULTIMATE.start_main_~main__y~0) (<= 87 ULTIMATE.start_main_~main__x~0)) (and (<= 71 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 71) (<= 71 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 71)) (and .cse0 (<= ULTIMATE.start_main_~main__x~0 13) .cse1 (<= 13 ULTIMATE.start_main_~main__x~0)) (and .cse0 (<= 50 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 50) .cse1) (and (<= 49 ULTIMATE.start_main_~main__x~0) .cse0 .cse1 (<= ULTIMATE.start_main_~main__x~0 49)) (and (<= ULTIMATE.start_main_~main__x~0 44) .cse0 (<= 44 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= ULTIMATE.start_main_~main__x~0 62) (<= ULTIMATE.start_main_~main__y~0 62) (<= 62 ULTIMATE.start_main_~main__x~0) (<= 62 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__x~0 92) (<= ULTIMATE.start_main_~main__y~0 92) (<= 92 ULTIMATE.start_main_~main__x~0) (<= 92 ULTIMATE.start_main_~main__y~0)) (and (<= 73 ULTIMATE.start_main_~main__y~0) (<= 73 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 73) (<= ULTIMATE.start_main_~main__y~0 73)) (and (<= ULTIMATE.start_main_~main__y~0 74) (<= 74 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 74) (<= 74 ULTIMATE.start_main_~main__y~0)) (and (<= ULTIMATE.start_main_~main__y~0 80) (<= 80 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 80) (<= 80 ULTIMATE.start_main_~main__y~0)) (and (<= 84 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 84) (<= 84 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 84)) (and (<= ULTIMATE.start_main_~main__x~0 41) .cse0 (<= 41 ULTIMATE.start_main_~main__x~0) .cse1) (and (<= 27 ULTIMATE.start_main_~main__x~0) .cse0 .cse1 (<= ULTIMATE.start_main_~main__x~0 27)) (and .cse0 (<= 48 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 48) .cse1) (and (<= ULTIMATE.start_main_~main__y~0 55) (<= ULTIMATE.start_main_~main__x~0 55) (<= 55 ULTIMATE.start_main_~main__y~0) (<= 55 ULTIMATE.start_main_~main__x~0)))) [2021-11-07 00:56:27,884 INFO L853 garLoopResultBuilder]: At program point L195(lines 25 196) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 2) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 50) (<= 2 ULTIMATE.start_main_~main__x~0)) [2021-11-07 00:56:27,884 INFO L857 garLoopResultBuilder]: For program point L96(line 96) no Hoare annotation was computed. [2021-11-07 00:56:27,884 INFO L860 garLoopResultBuilder]: At program point L212(lines 13 214) the Hoare annotation is: true [2021-11-07 00:56:27,884 INFO L853 garLoopResultBuilder]: At program point L171(lines 37 172) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= 4 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__x~0 4) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-11-07 00:56:27,885 INFO L853 garLoopResultBuilder]: At program point L147(lines 49 148) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 6) (<= 50 ULTIMATE.start_main_~main__y~0) (<= 6 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-11-07 00:56:27,885 INFO L853 garLoopResultBuilder]: At program point L123(lines 61 124) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 8) (<= 8 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-11-07 00:56:27,885 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 96) no Hoare annotation was computed. [2021-11-07 00:56:27,885 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 00:56:27,885 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 213) no Hoare annotation was computed. [2021-11-07 00:56:27,886 INFO L853 garLoopResultBuilder]: At program point L207(lines 19 208) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__x~0 1) (<= 1 ULTIMATE.start_main_~main__x~0) (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-11-07 00:56:27,886 INFO L853 garLoopResultBuilder]: At program point L183(lines 31 184) the Hoare annotation is: (and (<= 50 ULTIMATE.start_main_~main__y~0) (<= ULTIMATE.start_main_~main__x~0 3) (<= 3 ULTIMATE.start_main_~main__x~0) (<= ULTIMATE.start_main_~main__y~0 50)) [2021-11-07 00:56:27,889 INFO L731 BasicCegarLoop]: Path program histogram: [5, 1] [2021-11-07 00:56:27,890 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 00:56:27,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:56:27 BoogieIcfgContainer [2021-11-07 00:56:27,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 00:56:27,943 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 00:56:27,943 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 00:56:27,943 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 00:56:27,944 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:58" (3/4) ... [2021-11-07 00:56:27,946 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 00:56:27,957 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-07 00:56:27,958 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-07 00:56:27,958 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 00:56:27,958 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 00:56:28,004 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 00:56:28,004 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 00:56:28,005 INFO L168 Benchmark]: Toolchain (without parser) took 210599.06 ms. Allocated memory was 98.6 MB in the beginning and 524.3 MB in the end (delta: 425.7 MB). Free memory was 57.5 MB in the beginning and 355.0 MB in the end (delta: -297.5 MB). Peak memory consumption was 127.8 MB. Max. memory is 16.1 GB. [2021-11-07 00:56:28,005 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 98.6 MB. Free memory is still 74.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:56:28,005 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.69 ms. Allocated memory is still 98.6 MB. Free memory was 57.3 MB in the beginning and 73.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 00:56:28,006 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.04 ms. Allocated memory is still 98.6 MB. Free memory was 73.6 MB in the beginning and 72.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:56:28,006 INFO L168 Benchmark]: Boogie Preprocessor took 26.55 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 71.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 00:56:28,006 INFO L168 Benchmark]: RCFGBuilder took 585.86 ms. Allocated memory is still 98.6 MB. Free memory was 71.0 MB in the beginning and 54.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 00:56:28,007 INFO L168 Benchmark]: TraceAbstraction took 209531.33 ms. Allocated memory was 98.6 MB in the beginning and 524.3 MB in the end (delta: 425.7 MB). Free memory was 53.9 MB in the beginning and 360.2 MB in the end (delta: -306.4 MB). Peak memory consumption was 343.8 MB. Max. memory is 16.1 GB. [2021-11-07 00:56:28,007 INFO L168 Benchmark]: Witness Printer took 61.47 ms. Allocated memory is still 524.3 MB. Free memory was 360.2 MB in the beginning and 355.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 00:56:28,008 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 98.6 MB. Free memory is still 74.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 344.69 ms. Allocated memory is still 98.6 MB. Free memory was 57.3 MB in the beginning and 73.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.04 ms. Allocated memory is still 98.6 MB. Free memory was 73.6 MB in the beginning and 72.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.55 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 71.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 585.86 ms. Allocated memory is still 98.6 MB. Free memory was 71.0 MB in the beginning and 54.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 209531.33 ms. Allocated memory was 98.6 MB in the beginning and 524.3 MB in the end (delta: 425.7 MB). Free memory was 53.9 MB in the beginning and 360.2 MB in the end (delta: -306.4 MB). Peak memory consumption was 343.8 MB. Max. memory is 16.1 GB. * Witness Printer took 61.47 ms. Allocated memory is still 524.3 MB. Free memory was 360.2 MB in the beginning and 355.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 209.3s, OverallIterations: 6, TraceHistogramMax: 91, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 2 SDslu, 46 SDs, 0 SdLazy, 18764 SolverSat, 1354 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1161 GetRequests, 475 SyntacticMatches, 5 SemanticMatches, 681 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25802 ImplicationChecksByTransitivity, 87.6s 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 103 NumberOfFragments, 1302 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 258 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 173.5s InterpolantComputationTime, 597 NumberOfCodeBlocks, 597 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 873 ConstructedInterpolants, 0 QuantifiedInterpolants, 20822 SizeOfPredicates, 7 NumberOfNonLiveVariables, 779 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: ((50 <= main__y && main__x <= 3) && 3 <= main__x) && main__y <= 50 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((50 <= main__y && 17 <= main__x) && main__x <= 17) && main__y <= 50) || (((50 <= main__y && 30 <= main__x) && main__x <= 30) && main__y <= 50)) || (((50 <= main__y && main__x <= 15) && 15 <= main__x) && main__y <= 50)) || (((51 <= main__y && main__y <= 51) && 51 <= main__x) && main__x <= 51)) || (((57 <= main__y && 57 <= main__x) && main__x <= 57) && main__y <= 57)) || (((main__x <= 10 && 50 <= main__y) && 10 <= main__x) && main__y <= 50)) || (((94 <= main__x && main__y <= 94) && main__x <= 94) && 94 <= main__y)) || (((99 <= main__y && main__y <= 99) && 99 <= main__x) && main__x < 100)) || (((main__y <= 83 && main__x <= 83) && 83 <= main__x) && 83 <= main__y)) || (((89 <= main__x && main__y <= 89) && 89 <= main__y) && main__x <= 89)) || (((50 <= main__y && main__x <= 39) && 39 <= main__x) && main__y <= 50)) || (((50 <= main__y && main__x <= 29) && 29 <= main__x) && main__y <= 50)) || (((46 <= main__x && 50 <= main__y) && main__x <= 46) && main__y <= 50)) || (((50 <= main__y && main__x <= 40) && main__y <= 50) && 40 <= main__x)) || (((53 <= main__x && main__y <= 53) && 53 <= main__y) && main__x <= 53)) || (((28 <= main__x && 50 <= main__y) && main__x <= 28) && main__y <= 50)) || (((60 <= main__x && main__y <= 60) && 60 <= main__y) && main__x <= 60)) || (((main__y <= 56 && 56 <= main__y) && 56 <= main__x) && main__x <= 56)) || (((12 <= main__x && main__x <= 12) && 50 <= main__y) && main__y <= 50)) || (((main__x <= 88 && main__y <= 88) && 88 <= main__x) && 88 <= main__y)) || (((main__x <= 66 && 66 <= main__x) && 66 <= main__y) && main__y <= 66)) || (((85 <= main__x && 85 <= main__y) && main__x <= 85) && main__y <= 85)) || (((main__x <= 19 && 19 <= main__x) && 50 <= main__y) && main__y <= 50)) || (((main__x <= 43 && 50 <= main__y) && 43 <= main__x) && main__y <= 50)) || (((50 <= main__y && 22 <= main__x) && main__x <= 22) && main__y <= 50)) || (((64 <= main__x && main__x <= 64) && 64 <= main__y) && main__y <= 64)) || (((main__y <= 59 && main__x <= 59) && 59 <= main__x) && 59 <= main__y)) || (((50 <= main__y && 16 <= main__x) && main__x <= 16) && main__y <= 50)) || (((81 <= main__x && main__y <= 81) && 81 <= main__y) && main__x <= 81)) || (((50 <= main__y && main__x <= 33) && 33 <= main__x) && main__y <= 50)) || (((77 <= main__x && 77 <= main__y) && main__x <= 77) && main__y <= 77)) || (((93 <= main__x && main__x <= 93) && main__y <= 93) && 93 <= main__y)) || (((70 <= main__y && main__x <= 70) && main__y <= 70) && 70 <= main__x)) || (((50 <= main__y && 25 <= main__x) && main__x <= 25) && main__y <= 50)) || (((main__x <= 26 && 50 <= main__y) && 26 <= main__x) && main__y <= 50)) || (((23 <= main__x && 50 <= main__y) && main__y <= 50) && main__x <= 23)) || (((54 <= main__x && 54 <= main__y) && main__y <= 54) && main__x <= 54)) || (((98 <= main__y && 98 <= main__x) && main__y <= 98) && main__x < 99)) || (((95 <= main__x && main__y <= 95) && main__x <= 95) && 95 <= main__y)) || (((main__x <= 69 && 69 <= main__y) && main__y <= 69) && 69 <= main__x)) || (((main__x <= 72 && main__y <= 72) && 72 <= main__y) && 72 <= main__x)) || (((9 <= main__x && main__x <= 9) && 50 <= main__y) && main__y <= 50)) || (((91 <= main__y && main__x <= 91) && 91 <= main__x) && main__y <= 91)) || (((main__y <= 52 && 52 <= main__y) && 52 <= main__x) && main__x <= 52)) || (((96 <= main__y && main__x <= 96) && 96 <= main__x) && main__y <= 96)) || (((82 <= main__y && 82 <= main__x) && main__y <= 82) && main__x <= 82)) || (((97 <= main__y && main__y <= 97) && 97 <= main__x) && main__x < 98)) || (((37 <= main__x && 50 <= main__y) && main__x <= 37) && main__y <= 50)) || (((main__x <= 76 && 76 <= main__x) && main__y <= 76) && 76 <= main__y)) || (((65 <= main__x && main__x <= 65) && main__y <= 65) && 65 <= main__y)) || (((main__x <= 67 && 67 <= main__x) && 67 <= main__y) && main__y <= 67)) || (((100 <= main__x && main__y <= 100) && 100 <= main__y) && main__x <= 100)) || (((50 <= main__y && main__x <= 45) && 45 <= main__x) && main__y <= 50)) || (((61 <= main__x && 61 <= main__y) && main__x <= 61) && main__y <= 61)) || (((main__x <= 75 && main__y <= 75) && 75 <= main__y) && 75 <= main__x)) || (((50 <= main__y && main__x <= 34) && 34 <= main__x) && main__y <= 50)) || (((main__x <= 58 && 58 <= main__x) && main__y <= 58) && 58 <= main__y)) || (((50 <= main__y && main__x <= 18) && main__y <= 50) && 18 <= main__x)) || (((50 <= main__y && main__x <= 36) && 36 <= main__x) && main__y <= 50)) || (((11 <= main__x && 50 <= main__y) && main__x <= 11) && main__y <= 50)) || (((50 <= main__y && 42 <= main__x) && main__x <= 42) && main__y <= 50)) || (((50 <= main__y && 14 <= main__x) && main__x <= 14) && main__y <= 50)) || (((main__y <= 78 && 78 <= main__x) && main__x <= 78) && 78 <= main__y)) || (((50 <= main__y && main__x <= 47) && 47 <= main__x) && main__y <= 50)) || (((main__x <= 38 && 50 <= main__y) && 38 <= main__x) && main__y <= 50)) || (((main__y <= 68 && main__x <= 68) && 68 <= main__x) && 68 <= main__y)) || (((main__x <= 86 && main__y <= 86) && 86 <= main__x) && 86 <= main__y)) || (((32 <= main__x && 50 <= main__y) && main__x <= 32) && main__y <= 50)) || (((50 <= main__y && main__x <= 31) && 31 <= main__x) && main__y <= 50)) || (((20 <= main__x && 50 <= main__y) && main__x <= 20) && main__y <= 50)) || (((main__x <= 63 && 63 <= main__y) && main__y <= 63) && 63 <= main__x)) || (((79 <= main__y && 79 <= main__x) && main__x <= 79) && main__y <= 79)) || (((50 <= main__y && 24 <= main__x) && main__x <= 24) && main__y <= 50)) || (((90 <= main__x && 90 <= main__y) && main__y <= 90) && main__x <= 90)) || (((50 <= main__y && 21 <= main__x) && main__x <= 21) && main__y <= 50)) || (((main__x <= 35 && 35 <= main__x) && 50 <= main__y) && main__y <= 50)) || (((main__x <= 87 && main__y <= 87) && 87 <= main__y) && 87 <= main__x)) || (((71 <= main__x && main__y <= 71) && 71 <= main__y) && main__x <= 71)) || (((50 <= main__y && main__x <= 13) && main__y <= 50) && 13 <= main__x)) || (((50 <= main__y && 50 <= main__x) && main__x <= 50) && main__y <= 50)) || (((49 <= main__x && 50 <= main__y) && main__y <= 50) && main__x <= 49)) || (((main__x <= 44 && 50 <= main__y) && 44 <= main__x) && main__y <= 50)) || (((main__x <= 62 && main__y <= 62) && 62 <= main__x) && 62 <= main__y)) || (((main__x <= 92 && main__y <= 92) && 92 <= main__x) && 92 <= main__y)) || (((73 <= main__y && 73 <= main__x) && main__x <= 73) && main__y <= 73)) || (((main__y <= 74 && 74 <= main__x) && main__x <= 74) && 74 <= main__y)) || (((main__y <= 80 && 80 <= main__x) && main__x <= 80) && 80 <= main__y)) || (((84 <= main__y && main__x <= 84) && 84 <= main__x) && main__y <= 84)) || (((main__x <= 41 && 50 <= main__y) && 41 <= main__x) && main__y <= 50)) || (((27 <= main__x && 50 <= main__y) && main__y <= 50) && main__x <= 27)) || (((50 <= main__y && 48 <= main__x) && main__x <= 48) && main__y <= 50)) || (((main__y <= 55 && main__x <= 55) && 55 <= main__y) && 55 <= main__x) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 7) && 7 <= main__x) && main__y <= 50 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((main__x <= 1 && 1 <= main__x) && 50 <= main__y) && main__y <= 50 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((main__x <= 2 && 50 <= main__y) && main__y <= 50) && 2 <= main__x - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 8) && 8 <= main__x) && main__y <= 50 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: ((50 <= main__y && main__x <= 5) && 5 <= main__x) && main__y <= 50 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((main__x <= 6 && 50 <= main__y) && 6 <= main__x) && main__y <= 50 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((50 <= main__y && 4 <= main__x) && main__x <= 4) && main__y <= 50 RESULT: Ultimate proved your program to be correct! [2021-11-07 00:56:28,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99cb15d-7119-4f1f-95f3-b4dec0a72a83/bin/utaipan-UUZaoUuFF8/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