./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/byte_add-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac64f5b077f8251002b0bb05f1aba070a52d8bbef53fa94e35704949c96b0f7c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:49:15,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:49:15,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:49:16,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:49:16,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:49:16,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:49:16,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:49:16,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:49:16,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:49:16,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:49:16,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:49:16,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:49:16,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:49:16,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:49:16,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:49:16,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:49:16,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:49:16,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:49:16,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:49:16,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:49:16,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:49:16,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:49:16,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:49:16,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:49:16,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:49:16,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:49:16,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:49:16,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:49:16,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:49:16,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:49:16,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:49:16,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:49:16,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:49:16,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:49:16,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:49:16,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:49:16,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:49:16,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:49:16,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:49:16,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:49:16,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:49:16,089 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-12 22:49:16,132 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:49:16,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:49:16,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:49:16,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:49:16,135 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:49:16,135 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:49:16,135 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:49:16,135 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:49:16,136 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:49:16,136 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:49:16,137 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:49:16,137 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:49:16,138 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:49:16,138 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:49:16,138 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:49:16,138 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:49:16,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:49:16,140 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:49:16,140 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:49:16,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:49:16,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:49:16,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:49:16,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:49:16,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:49:16,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:49:16,142 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-12 22:49:16,142 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:49:16,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:49:16,143 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:49:16,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:49:16,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:49:16,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:49:16,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:49:16,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:49:16,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:49:16,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:49:16,147 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:49:16,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:49:16,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:49:16,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:49:16,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:49:16,148 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_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac64f5b077f8251002b0bb05f1aba070a52d8bbef53fa94e35704949c96b0f7c [2021-11-12 22:49:16,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:49:16,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:49:16,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:49:16,490 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:49:16,491 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:49:16,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/bitvector/byte_add-2.i [2021-11-12 22:49:16,583 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/data/9cfe1e036/d29dc7e8bcce41c9a89d1c8f2743e91d/FLAG7905bebb6 [2021-11-12 22:49:17,099 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:49:17,099 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/sv-benchmarks/c/bitvector/byte_add-2.i [2021-11-12 22:49:17,108 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/data/9cfe1e036/d29dc7e8bcce41c9a89d1c8f2743e91d/FLAG7905bebb6 [2021-11-12 22:49:17,456 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/data/9cfe1e036/d29dc7e8bcce41c9a89d1c8f2743e91d [2021-11-12 22:49:17,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:49:17,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:49:17,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:49:17,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:49:17,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:49:17,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:49:17" (1/1) ... [2021-11-12 22:49:17,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5abdd5ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:17, skipping insertion in model container [2021-11-12 22:49:17,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:49:17" (1/1) ... [2021-11-12 22:49:17,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:49:17,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:49:17,755 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_382d4d04-a55e-4ed0-98a1-e4122683532f/sv-benchmarks/c/bitvector/byte_add-2.i[1166,1179] [2021-11-12 22:49:17,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:49:17,833 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:49:17,849 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_382d4d04-a55e-4ed0-98a1-e4122683532f/sv-benchmarks/c/bitvector/byte_add-2.i[1166,1179] [2021-11-12 22:49:17,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:49:17,892 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:49:17,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:17 WrapperNode [2021-11-12 22:49:17,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:49:17,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:49:17,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:49:17,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:49:17,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:17" (1/1) ... [2021-11-12 22:49:17,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:17" (1/1) ... [2021-11-12 22:49:17,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:49:17,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:49:17,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:49:17,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:49:18,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:17" (1/1) ... [2021-11-12 22:49:18,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:17" (1/1) ... [2021-11-12 22:49:18,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:17" (1/1) ... [2021-11-12 22:49:18,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:17" (1/1) ... [2021-11-12 22:49:18,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:17" (1/1) ... [2021-11-12 22:49:18,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:17" (1/1) ... [2021-11-12 22:49:18,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:17" (1/1) ... [2021-11-12 22:49:18,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:49:18,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:49:18,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:49:18,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:49:18,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:17" (1/1) ... [2021-11-12 22:49:18,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:49:18,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:49:18,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:49:18,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:49:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:49:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:49:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:49:18,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:49:18,813 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:49:18,813 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 22:49:18,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:49:18 BoogieIcfgContainer [2021-11-12 22:49:18,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:49:18,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:49:18,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:49:18,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:49:18,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:49:17" (1/3) ... [2021-11-12 22:49:18,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3113e311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:49:18, skipping insertion in model container [2021-11-12 22:49:18,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:17" (2/3) ... [2021-11-12 22:49:18,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3113e311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:49:18, skipping insertion in model container [2021-11-12 22:49:18,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:49:18" (3/3) ... [2021-11-12 22:49:18,832 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add-2.i [2021-11-12 22:49:18,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:49:18,839 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-12 22:49:18,901 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:49:18,910 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 [2021-11-12 22:49:18,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-11-12 22:49:18,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 98 states have internal predecessors, (116), 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) [2021-11-12 22:49:18,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:49:18,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:18,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:49:18,941 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:49:18,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash 290383, now seen corresponding path program 1 times [2021-11-12 22:49:18,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:49:18,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130073303] [2021-11-12 22:49:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:18,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:49:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:19,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:49:19,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130073303] [2021-11-12 22:49:19,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130073303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:19,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:19,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 22:49:19,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279539921] [2021-11-12 22:49:19,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:19,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:49:19,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:49:19,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:49:19,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:49:19,227 INFO L87 Difference]: Start difference. First operand has 99 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 98 states have internal predecessors, (116), 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 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-12 22:49:19,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:19,266 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2021-11-12 22:49:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:49:19,268 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-12 22:49:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:19,279 INFO L225 Difference]: With dead ends: 99 [2021-11-12 22:49:19,279 INFO L226 Difference]: Without dead ends: 60 [2021-11-12 22:49:19,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:49:19,287 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.27ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:19,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 6 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 18.27ms Time] [2021-11-12 22:49:19,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-12 22:49:19,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-11-12 22:49:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 states have internal predecessors, (77), 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) [2021-11-12 22:49:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2021-11-12 22:49:19,332 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 3 [2021-11-12 22:49:19,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:19,333 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2021-11-12 22:49:19,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-12 22:49:19,334 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2021-11-12 22:49:19,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 22:49:19,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:19,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:19,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:49:19,359 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:49:19,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:19,362 INFO L85 PathProgramCache]: Analyzing trace with hash 862708226, now seen corresponding path program 1 times [2021-11-12 22:49:19,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:49:19,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580343078] [2021-11-12 22:49:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:19,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:49:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:19,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:49:19,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580343078] [2021-11-12 22:49:19,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580343078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:19,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:19,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:49:19,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751608417] [2021-11-12 22:49:19,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:19,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:49:19,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:49:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:49:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:49:19,494 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:19,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:19,605 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2021-11-12 22:49:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:49:19,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-12 22:49:19,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:19,608 INFO L225 Difference]: With dead ends: 120 [2021-11-12 22:49:19,608 INFO L226 Difference]: Without dead ends: 81 [2021-11-12 22:49:19,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:49:19,611 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 21 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.91ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.32ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:19,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 105 Invalid, 56 Unknown, 0 Unchecked, 2.91ms Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 92.32ms Time] [2021-11-12 22:49:19,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-12 22:49:19,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2021-11-12 22:49:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 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) [2021-11-12 22:49:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2021-11-12 22:49:19,624 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 12 [2021-11-12 22:49:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:19,625 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2021-11-12 22:49:19,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2021-11-12 22:49:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 22:49:19,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:19,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:19,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:49:19,628 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:49:19,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:19,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1303120393, now seen corresponding path program 1 times [2021-11-12 22:49:19,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:49:19,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279646115] [2021-11-12 22:49:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:19,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:49:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:19,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:49:19,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279646115] [2021-11-12 22:49:19,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279646115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:19,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:19,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:49:19,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257455529] [2021-11-12 22:49:19,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:19,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:49:19,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:49:19,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:49:19,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:49:19,878 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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) [2021-11-12 22:49:20,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:20,078 INFO L93 Difference]: Finished difference Result 111 states and 144 transitions. [2021-11-12 22:49:20,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:49:20,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-12 22:49:20,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:20,081 INFO L225 Difference]: With dead ends: 111 [2021-11-12 22:49:20,082 INFO L226 Difference]: Without dead ends: 99 [2021-11-12 22:49:20,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:49:20,093 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 86 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.60ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 157.44ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:20,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 216 Invalid, 132 Unknown, 0 Unchecked, 4.60ms Time], IncrementalHoareTripleChecker [13 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 157.44ms Time] [2021-11-12 22:49:20,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-12 22:49:20,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 73. [2021-11-12 22:49:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 72 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 91 transitions. [2021-11-12 22:49:20,106 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 91 transitions. Word has length 15 [2021-11-12 22:49:20,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:20,107 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 91 transitions. [2021-11-12 22:49:20,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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) [2021-11-12 22:49:20,107 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 91 transitions. [2021-11-12 22:49:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 22:49:20,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:20,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:20,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 22:49:20,111 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:49:20,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:20,112 INFO L85 PathProgramCache]: Analyzing trace with hash 521913395, now seen corresponding path program 1 times [2021-11-12 22:49:20,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:49:20,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924783981] [2021-11-12 22:49:20,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:20,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:49:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:20,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:49:20,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924783981] [2021-11-12 22:49:20,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924783981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:20,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:20,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 22:49:20,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722183992] [2021-11-12 22:49:20,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:20,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:49:20,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:49:20,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:49:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:49:20,236 INFO L87 Difference]: Start difference. First operand 73 states and 91 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:20,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:20,373 INFO L93 Difference]: Finished difference Result 118 states and 148 transitions. [2021-11-12 22:49:20,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:49:20,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-12 22:49:20,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:20,375 INFO L225 Difference]: With dead ends: 118 [2021-11-12 22:49:20,375 INFO L226 Difference]: Without dead ends: 81 [2021-11-12 22:49:20,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:49:20,378 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 79 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.54ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:20,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 138 Invalid, 76 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 105.54ms Time] [2021-11-12 22:49:20,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-12 22:49:20,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2021-11-12 22:49:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 73 states have internal predecessors, (92), 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) [2021-11-12 22:49:20,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-11-12 22:49:20,389 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 18 [2021-11-12 22:49:20,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:20,390 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-11-12 22:49:20,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:20,391 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-11-12 22:49:20,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:49:20,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:20,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:20,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 22:49:20,393 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:49:20,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:20,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1891165951, now seen corresponding path program 1 times [2021-11-12 22:49:20,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:49:20,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066009167] [2021-11-12 22:49:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:20,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:49:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:20,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:49:20,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066009167] [2021-11-12 22:49:20,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066009167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:20,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:20,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:49:20,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222412294] [2021-11-12 22:49:20,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:20,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:49:20,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:49:20,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:49:20,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:49:20,505 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:20,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:20,706 INFO L93 Difference]: Finished difference Result 156 states and 211 transitions. [2021-11-12 22:49:20,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:49:20,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-12 22:49:20,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:20,710 INFO L225 Difference]: With dead ends: 156 [2021-11-12 22:49:20,711 INFO L226 Difference]: Without dead ends: 118 [2021-11-12 22:49:20,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:49:20,717 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 60 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 150.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 179.18ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:20,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 143 Invalid, 106 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [24 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 179.18ms Time] [2021-11-12 22:49:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-12 22:49:20,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 88. [2021-11-12 22:49:20,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 87 states have internal predecessors, (112), 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) [2021-11-12 22:49:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 112 transitions. [2021-11-12 22:49:20,745 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 112 transitions. Word has length 24 [2021-11-12 22:49:20,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:20,748 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 112 transitions. [2021-11-12 22:49:20,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 112 transitions. [2021-11-12 22:49:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-12 22:49:20,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:20,753 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:20,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 22:49:20,753 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:49:20,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:20,758 INFO L85 PathProgramCache]: Analyzing trace with hash 747339762, now seen corresponding path program 1 times [2021-11-12 22:49:20,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:49:20,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507809545] [2021-11-12 22:49:20,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:20,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:49:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:21,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:49:21,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507809545] [2021-11-12 22:49:21,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507809545] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:49:21,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927144350] [2021-11-12 22:49:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:21,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:49:21,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:49:21,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:49:21,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 22:49:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:21,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:49:21,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:21,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:21,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927144350] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:49:21,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-12 22:49:21,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2021-11-12 22:49:21,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338243741] [2021-11-12 22:49:21,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:21,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:49:21,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:49:21,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:49:21,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:49:21,884 INFO L87 Difference]: Start difference. First operand 88 states and 112 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:22,065 INFO L93 Difference]: Finished difference Result 232 states and 298 transitions. [2021-11-12 22:49:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:49:22,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-12 22:49:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:22,067 INFO L225 Difference]: With dead ends: 232 [2021-11-12 22:49:22,067 INFO L226 Difference]: Without dead ends: 169 [2021-11-12 22:49:22,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:49:22,069 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 149 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.41ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 166.42ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:22,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 208 Invalid, 146 Unknown, 0 Unchecked, 2.41ms Time], IncrementalHoareTripleChecker [20 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 166.42ms Time] [2021-11-12 22:49:22,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-12 22:49:22,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 158. [2021-11-12 22:49:22,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.2738853503184713) internal successors, (200), 157 states have internal predecessors, (200), 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) [2021-11-12 22:49:22,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 200 transitions. [2021-11-12 22:49:22,084 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 200 transitions. Word has length 30 [2021-11-12 22:49:22,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:22,085 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 200 transitions. [2021-11-12 22:49:22,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:22,085 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 200 transitions. [2021-11-12 22:49:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:49:22,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:22,087 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:22,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:49:22,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:49:22,313 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:49:22,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:22,313 INFO L85 PathProgramCache]: Analyzing trace with hash 678282025, now seen corresponding path program 1 times [2021-11-12 22:49:22,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:49:22,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769825486] [2021-11-12 22:49:22,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:22,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:49:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-12 22:49:22,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:49:22,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769825486] [2021-11-12 22:49:22,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769825486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:22,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:22,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:49:22,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824856541] [2021-11-12 22:49:22,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:22,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:49:22,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:49:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:49:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:49:22,459 INFO L87 Difference]: Start difference. First operand 158 states and 200 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:22,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:22,575 INFO L93 Difference]: Finished difference Result 465 states and 581 transitions. [2021-11-12 22:49:22,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:49:22,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:49:22,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:22,579 INFO L225 Difference]: With dead ends: 465 [2021-11-12 22:49:22,579 INFO L226 Difference]: Without dead ends: 335 [2021-11-12 22:49:22,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:49:22,581 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 93 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.01ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:22,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 187 Invalid, 79 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 93.01ms Time] [2021-11-12 22:49:22,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-12 22:49:22,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 174. [2021-11-12 22:49:22,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.2658959537572254) internal successors, (219), 173 states have internal predecessors, (219), 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) [2021-11-12 22:49:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 219 transitions. [2021-11-12 22:49:22,602 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 219 transitions. Word has length 33 [2021-11-12 22:49:22,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:22,603 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 219 transitions. [2021-11-12 22:49:22,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:22,603 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 219 transitions. [2021-11-12 22:49:22,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:49:22,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:22,605 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:22,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 22:49:22,606 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:49:22,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:22,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1365842675, now seen corresponding path program 1 times [2021-11-12 22:49:22,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:49:22,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598369050] [2021-11-12 22:49:22,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:22,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:49:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:22,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:49:22,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598369050] [2021-11-12 22:49:22,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598369050] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:49:22,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046349275] [2021-11-12 22:49:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:22,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:49:22,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:49:22,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:49:22,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 22:49:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:22,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 22:49:22,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:23,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:25,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046349275] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:49:25,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-12 22:49:25,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 10] total 21 [2021-11-12 22:49:25,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920959634] [2021-11-12 22:49:25,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:25,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:49:25,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:49:25,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:49:25,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2021-11-12 22:49:25,795 INFO L87 Difference]: Start difference. First operand 174 states and 219 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 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) [2021-11-12 22:49:26,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:26,136 INFO L93 Difference]: Finished difference Result 450 states and 573 transitions. [2021-11-12 22:49:26,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:49:26,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 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 33 [2021-11-12 22:49:26,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:26,140 INFO L225 Difference]: With dead ends: 450 [2021-11-12 22:49:26,140 INFO L226 Difference]: Without dead ends: 321 [2021-11-12 22:49:26,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:49:26,141 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 163 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 220.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.25ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 259.36ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:26,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 320 Invalid, 220 Unknown, 0 Unchecked, 3.25ms Time], IncrementalHoareTripleChecker [26 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 259.36ms Time] [2021-11-12 22:49:26,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-12 22:49:26,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 298. [2021-11-12 22:49:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.2525252525252526) internal successors, (372), 297 states have internal predecessors, (372), 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) [2021-11-12 22:49:26,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 372 transitions. [2021-11-12 22:49:26,164 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 372 transitions. Word has length 33 [2021-11-12 22:49:26,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:26,166 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 372 transitions. [2021-11-12 22:49:26,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 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) [2021-11-12 22:49:26,167 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 372 transitions. [2021-11-12 22:49:26,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 22:49:26,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:26,175 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:26,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:49:26,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:49:26,392 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:49:26,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:26,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1486975511, now seen corresponding path program 1 times [2021-11-12 22:49:26,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:49:26,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595624713] [2021-11-12 22:49:26,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:26,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:49:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:26,482 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:49:26,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595624713] [2021-11-12 22:49:26,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595624713] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:49:26,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667653821] [2021-11-12 22:49:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:26,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:49:26,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:49:26,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:49:26,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-12 22:49:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:26,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 22:49:26,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:27,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:30,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667653821] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:49:30,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [4040784] [2021-11-12 22:49:30,174 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-12 22:49:30,174 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:49:30,178 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:49:30,184 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:49:30,184 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:49:30,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:30,249 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:30,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:30,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:49:30,252 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:30,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:30,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:49:30,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 22:49:30,280 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-11-12 22:49:30,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:30,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:49:30,306 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:30,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:49:30,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:30,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:49:30,308 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:30,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:30,320 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:30,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:30,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:30,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:30,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:30,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:49:30,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:30,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:49:30,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:30,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:49:30,345 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:30,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:30,352 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:30,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:30,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 22:49:30,358 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:49:30,359 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:137, output treesize:122 [2021-11-12 22:49:30,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:30,379 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:49:30,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:30,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-11-12 22:49:30,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:30,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-11-12 22:49:30,473 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:49:34,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [4040784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:34,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:49:34,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 13, 11] total 36 [2021-11-12 22:49:34,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608896070] [2021-11-12 22:49:34,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:34,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:49:34,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:49:34,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:49:34,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=988, Unknown=0, NotChecked=0, Total=1260 [2021-11-12 22:49:34,913 INFO L87 Difference]: Start difference. First operand 298 states and 372 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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) [2021-11-12 22:49:36,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:36,994 INFO L93 Difference]: Finished difference Result 604 states and 751 transitions. [2021-11-12 22:49:36,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:49:36,995 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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 36 [2021-11-12 22:49:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:36,998 INFO L225 Difference]: With dead ends: 604 [2021-11-12 22:49:36,998 INFO L226 Difference]: Without dead ends: 540 [2021-11-12 22:49:37,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=272, Invalid=988, Unknown=0, NotChecked=0, Total=1260 [2021-11-12 22:49:37,001 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 376 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1904.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.26ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2028.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:37,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 585 Invalid, 461 Unknown, 0 Unchecked, 11.26ms Time], IncrementalHoareTripleChecker [12 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 2028.00ms Time] [2021-11-12 22:49:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-12 22:49:37,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 312. [2021-11-12 22:49:37,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.247588424437299) internal successors, (388), 311 states have internal predecessors, (388), 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) [2021-11-12 22:49:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 388 transitions. [2021-11-12 22:49:37,023 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 388 transitions. Word has length 36 [2021-11-12 22:49:37,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:37,023 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 388 transitions. [2021-11-12 22:49:37,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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) [2021-11-12 22:49:37,024 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 388 transitions. [2021-11-12 22:49:37,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-12 22:49:37,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:37,026 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:37,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-12 22:49:37,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-12 22:49:37,240 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:49:37,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:37,241 INFO L85 PathProgramCache]: Analyzing trace with hash 801010486, now seen corresponding path program 1 times [2021-11-12 22:49:37,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:49:37,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562167850] [2021-11-12 22:49:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:37,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:49:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:37,387 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:49:37,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562167850] [2021-11-12 22:49:37,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562167850] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:49:37,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251467948] [2021-11-12 22:49:37,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:37,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:49:37,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:49:37,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:49:37,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-12 22:49:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:37,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 22:49:37,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:04,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:09,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251467948] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:50:09,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [332283829] [2021-11-12 22:50:09,101 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-12 22:50:09,101 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:50:09,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:50:09,102 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:50:09,102 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:50:09,122 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:09,123 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:50:09,123 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:09,124 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:50:09,124 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:50:09,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:09,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:50:09,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 22:50:09,138 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 10=[|v_#valid_10|]} [2021-11-12 22:50:09,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:09,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:50:09,154 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:09,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:50:09,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:09,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:50:09,157 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:50:09,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:50:09,166 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:09,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:09,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:09,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:09,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:09,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:50:09,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:09,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:50:09,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:09,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:50:09,206 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:50:09,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:50:09,213 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:09,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:09,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 22:50:09,218 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:50:09,218 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:137, output treesize:122 [2021-11-12 22:50:09,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:09,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:50:09,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:09,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-12 22:50:09,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:09,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 22:50:09,381 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:09,386 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-12 22:50:09,432 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:50:21,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [332283829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:21,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:50:21,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 13, 11] total 38 [2021-11-12 22:50:21,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216423355] [2021-11-12 22:50:21,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:21,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:50:21,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:50:21,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:50:21,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1117, Unknown=12, NotChecked=0, Total=1406 [2021-11-12 22:50:21,726 INFO L87 Difference]: Start difference. First operand 312 states and 388 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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) [2021-11-12 22:50:25,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:25,097 INFO L93 Difference]: Finished difference Result 761 states and 947 transitions. [2021-11-12 22:50:25,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:50:25,098 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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 39 [2021-11-12 22:50:25,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:25,102 INFO L225 Difference]: With dead ends: 761 [2021-11-12 22:50:25,102 INFO L226 Difference]: Without dead ends: 697 [2021-11-12 22:50:25,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=277, Invalid=1117, Unknown=12, NotChecked=0, Total=1406 [2021-11-12 22:50:25,104 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 337 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3011.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.05ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3304.41ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:25,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 904 Invalid, 736 Unknown, 0 Unchecked, 13.05ms Time], IncrementalHoareTripleChecker [6 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 3304.41ms Time] [2021-11-12 22:50:25,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-11-12 22:50:25,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 312. [2021-11-12 22:50:25,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.247588424437299) internal successors, (388), 311 states have internal predecessors, (388), 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) [2021-11-12 22:50:25,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 388 transitions. [2021-11-12 22:50:25,121 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 388 transitions. Word has length 39 [2021-11-12 22:50:25,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:25,121 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 388 transitions. [2021-11-12 22:50:25,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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) [2021-11-12 22:50:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 388 transitions. [2021-11-12 22:50:25,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-12 22:50:25,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:25,123 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:25,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:25,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-12 22:50:25,336 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:50:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:25,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2013440009, now seen corresponding path program 1 times [2021-11-12 22:50:25,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:50:25,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51991193] [2021-11-12 22:50:25,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:25,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:50:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:25,471 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:50:25,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51991193] [2021-11-12 22:50:25,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51991193] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:50:25,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650608834] [2021-11-12 22:50:25,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:25,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:50:25,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:50:25,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:50:25,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-12 22:50:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:25,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 22:50:25,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:26,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:29,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650608834] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:50:29,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1509103002] [2021-11-12 22:50:29,315 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-12 22:50:29,315 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:50:29,315 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:50:29,316 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:50:29,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:50:29,331 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:29,332 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:50:29,333 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:29,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:50:29,333 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:50:29,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:29,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:50:29,336 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 22:50:29,344 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 10=[|v_#valid_11|]} [2021-11-12 22:50:29,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:29,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:50:29,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:29,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:50:29,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:29,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:50:29,357 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:50:29,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:50:29,364 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:29,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:29,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:29,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:29,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:29,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:50:29,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:29,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:50:29,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:29,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:50:29,391 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:50:29,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:50:29,398 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:29,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:29,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 22:50:29,402 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:50:29,402 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:137, output treesize:122 [2021-11-12 22:50:29,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:29,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:50:29,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:29,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-11-12 22:50:29,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:29,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 22:50:29,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:29,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-12 22:50:29,515 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:50:38,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1509103002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:38,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:50:38,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 13, 11] total 38 [2021-11-12 22:50:38,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319338242] [2021-11-12 22:50:38,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:38,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:50:38,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:50:38,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:50:38,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1125, Unknown=0, NotChecked=0, Total=1406 [2021-11-12 22:50:38,630 INFO L87 Difference]: Start difference. First operand 312 states and 388 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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) [2021-11-12 22:50:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:42,505 INFO L93 Difference]: Finished difference Result 691 states and 857 transitions. [2021-11-12 22:50:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:50:42,506 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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 39 [2021-11-12 22:50:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:42,510 INFO L225 Difference]: With dead ends: 691 [2021-11-12 22:50:42,510 INFO L226 Difference]: Without dead ends: 627 [2021-11-12 22:50:42,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=281, Invalid=1125, Unknown=0, NotChecked=0, Total=1406 [2021-11-12 22:50:42,512 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 425 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3507.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.38ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3823.03ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:42,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 1040 Invalid, 967 Unknown, 0 Unchecked, 13.38ms Time], IncrementalHoareTripleChecker [10 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 3823.03ms Time] [2021-11-12 22:50:42,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-11-12 22:50:42,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 320. [2021-11-12 22:50:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.250783699059561) internal successors, (399), 319 states have internal predecessors, (399), 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) [2021-11-12 22:50:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 399 transitions. [2021-11-12 22:50:42,533 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 399 transitions. Word has length 39 [2021-11-12 22:50:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:42,533 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 399 transitions. [2021-11-12 22:50:42,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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) [2021-11-12 22:50:42,534 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 399 transitions. [2021-11-12 22:50:42,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-12 22:50:42,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:42,535 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:42,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:42,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-12 22:50:42,754 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:50:42,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:42,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1110699271, now seen corresponding path program 1 times [2021-11-12 22:50:42,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:50:42,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271175305] [2021-11-12 22:50:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:42,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:50:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 22:50:42,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:50:42,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271175305] [2021-11-12 22:50:42,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271175305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:42,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:42,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:50:42,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592814323] [2021-11-12 22:50:42,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:42,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:50:42,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:50:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:50:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:50:42,836 INFO L87 Difference]: Start difference. First operand 320 states and 399 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-11-12 22:50:43,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:43,061 INFO L93 Difference]: Finished difference Result 814 states and 1061 transitions. [2021-11-12 22:50:43,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:50:43,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 39 [2021-11-12 22:50:43,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:43,066 INFO L225 Difference]: With dead ends: 814 [2021-11-12 22:50:43,067 INFO L226 Difference]: Without dead ends: 562 [2021-11-12 22:50:43,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:50:43,068 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 77 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 157.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 182.46ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:43,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 137 Invalid, 108 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [20 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 182.46ms Time] [2021-11-12 22:50:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-12 22:50:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 419. [2021-11-12 22:50:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.299043062200957) internal successors, (543), 418 states have internal predecessors, (543), 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) [2021-11-12 22:50:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 543 transitions. [2021-11-12 22:50:43,094 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 543 transitions. Word has length 39 [2021-11-12 22:50:43,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:43,095 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 543 transitions. [2021-11-12 22:50:43,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-11-12 22:50:43,095 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 543 transitions. [2021-11-12 22:50:43,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-12 22:50:43,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:43,097 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:43,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-12 22:50:43,097 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:50:43,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:43,098 INFO L85 PathProgramCache]: Analyzing trace with hash -2033212262, now seen corresponding path program 1 times [2021-11-12 22:50:43,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:50:43,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295205912] [2021-11-12 22:50:43,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:43,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:50:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:43,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:50:43,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295205912] [2021-11-12 22:50:43,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295205912] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:50:43,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498618779] [2021-11-12 22:50:43,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:43,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:50:43,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:50:43,259 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:50:43,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-12 22:50:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:43,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 22:50:43,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:44,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:47,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498618779] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:50:47,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [737254138] [2021-11-12 22:50:47,430 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2021-11-12 22:50:47,430 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:50:47,431 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:50:47,431 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:50:47,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:50:47,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,468 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:50:47,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:50:47,469 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:50:47,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:50:47,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 22:50:47,473 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 10=[|v_#valid_12|]} [2021-11-12 22:50:47,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:47,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:50:47,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,485 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:50:47,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:50:47,486 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:50:47,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:50:47,495 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:47,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:47,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:47,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:50:47,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:50:47,516 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:50:47,519 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:50:47,520 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:50:47,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:50:47,526 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 22:50:47,530 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:50:47,531 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:137, output treesize:122 [2021-11-12 22:50:47,545 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:50:47,563 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,565 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-12 22:50:47,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-11-12 22:50:47,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-12 22:50:47,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:50:47,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-12 22:50:47,656 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:50:54,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [737254138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:54,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:50:54,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5, 13, 11] total 39 [2021-11-12 22:50:54,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512446531] [2021-11-12 22:50:54,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:54,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-12 22:50:54,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:50:54,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-12 22:50:54,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1209, Unknown=0, NotChecked=0, Total=1482 [2021-11-12 22:50:54,096 INFO L87 Difference]: Start difference. First operand 419 states and 543 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 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) [2021-11-12 22:50:57,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:57,187 INFO L93 Difference]: Finished difference Result 1013 states and 1314 transitions. [2021-11-12 22:50:57,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:50:57,187 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 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 41 [2021-11-12 22:50:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:57,193 INFO L225 Difference]: With dead ends: 1013 [2021-11-12 22:50:57,193 INFO L226 Difference]: Without dead ends: 927 [2021-11-12 22:50:57,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=273, Invalid=1209, Unknown=0, NotChecked=0, Total=1482 [2021-11-12 22:50:57,195 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 442 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2723.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.91ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3023.74ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:57,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 1727 Invalid, 1321 Unknown, 0 Unchecked, 16.91ms Time], IncrementalHoareTripleChecker [7 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 3023.74ms Time] [2021-11-12 22:50:57,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-12 22:50:57,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 414. [2021-11-12 22:50:57,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.297820823244552) internal successors, (536), 413 states have internal predecessors, (536), 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) [2021-11-12 22:50:57,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 536 transitions. [2021-11-12 22:50:57,239 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 536 transitions. Word has length 41 [2021-11-12 22:50:57,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:57,240 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 536 transitions. [2021-11-12 22:50:57,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 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) [2021-11-12 22:50:57,240 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 536 transitions. [2021-11-12 22:50:57,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-12 22:50:57,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:57,242 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:57,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:57,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:50:57,468 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:50:57,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:57,469 INFO L85 PathProgramCache]: Analyzing trace with hash 207291443, now seen corresponding path program 1 times [2021-11-12 22:50:57,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:50:57,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031370540] [2021-11-12 22:50:57,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:57,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:50:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:57,567 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:50:57,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031370540] [2021-11-12 22:50:57,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031370540] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:50:57,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556290034] [2021-11-12 22:50:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:57,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:50:57,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:50:57,573 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:50:57,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-12 22:50:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:57,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 22:50:57,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:25,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:28,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556290034] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:51:28,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2009795631] [2021-11-12 22:51:28,183 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2021-11-12 22:51:28,184 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:51:28,184 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:51:28,184 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:51:28,185 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:51:28,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,199 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:51:28,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:51:28,201 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:51:28,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:51:28,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 22:51:28,216 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 10=[|v_#valid_13|]} [2021-11-12 22:51:28,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:51:28,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:51:28,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:51:28,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:51:28,233 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:51:28,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:51:28,239 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:51:28,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:51:28,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:51:28,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:51:28,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:51:28,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:51:28,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:51:28,262 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:51:28,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:51:28,267 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,268 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 22:51:28,271 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:51:28,271 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:137, output treesize:122 [2021-11-12 22:51:28,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:51:28,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-11-12 22:51:28,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 22:51:28,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-12 22:51:28,386 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:28,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-12 22:51:28,411 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:51:36,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2009795631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:36,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:51:36,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5, 13, 11] total 39 [2021-11-12 22:51:36,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498305435] [2021-11-12 22:51:36,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:36,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-12 22:51:36,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:51:36,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-12 22:51:36,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1186, Unknown=13, NotChecked=0, Total=1482 [2021-11-12 22:51:36,566 INFO L87 Difference]: Start difference. First operand 414 states and 536 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 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) [2021-11-12 22:51:39,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:39,691 INFO L93 Difference]: Finished difference Result 906 states and 1173 transitions. [2021-11-12 22:51:39,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:51:39,692 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 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 41 [2021-11-12 22:51:39,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:39,696 INFO L225 Difference]: With dead ends: 906 [2021-11-12 22:51:39,696 INFO L226 Difference]: Without dead ends: 820 [2021-11-12 22:51:39,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 35.9s TimeCoverageRelationStatistics Valid=283, Invalid=1186, Unknown=13, NotChecked=0, Total=1482 [2021-11-12 22:51:39,698 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 523 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2823.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.97ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3074.17ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:39,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1220 Invalid, 861 Unknown, 0 Unchecked, 10.97ms Time], IncrementalHoareTripleChecker [18 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 3074.17ms Time] [2021-11-12 22:51:39,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-11-12 22:51:39,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 416. [2021-11-12 22:51:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.2963855421686747) internal successors, (538), 415 states have internal predecessors, (538), 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) [2021-11-12 22:51:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 538 transitions. [2021-11-12 22:51:39,724 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 538 transitions. Word has length 41 [2021-11-12 22:51:39,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:39,725 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 538 transitions. [2021-11-12 22:51:39,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 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) [2021-11-12 22:51:39,725 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 538 transitions. [2021-11-12 22:51:39,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-12 22:51:39,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:39,726 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:39,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:39,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-12 22:51:39,944 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:51:39,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:39,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2143105416, now seen corresponding path program 1 times [2021-11-12 22:51:39,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:51:39,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904198645] [2021-11-12 22:51:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:39,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:51:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:40,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:51:40,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904198645] [2021-11-12 22:51:40,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904198645] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:51:40,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096775555] [2021-11-12 22:51:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:40,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:51:40,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:51:40,044 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:51:40,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-12 22:51:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:40,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:51:40,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:40,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:40,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096775555] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:51:40,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [653949706] [2021-11-12 22:51:40,748 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2021-11-12 22:51:40,748 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:51:40,748 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:51:40,749 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:51:40,749 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:51:40,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:40,764 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:51:40,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:40,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:51:40,766 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:51:40,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:40,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:51:40,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 22:51:40,771 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 10=[|v_#valid_14|]} [2021-11-12 22:51:40,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:51:40,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:51:40,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:40,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:51:40,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:40,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:51:40,786 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:51:40,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:51:40,791 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:40,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:51:40,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:51:40,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:51:40,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:51:40,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:51:40,810 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:40,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:51:40,813 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:40,813 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:51:40,814 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:51:40,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:51:40,819 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:40,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:40,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 22:51:40,822 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:51:40,823 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:137, output treesize:122 [2021-11-12 22:51:40,835 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:40,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:51:40,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:40,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-12 22:51:40,900 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:40,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 22:51:40,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:40,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-12 22:51:41,029 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:51:41,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-11-12 22:51:41,053 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:51:51,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [653949706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:51,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:51:51,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5, 7, 6] total 28 [2021-11-12 22:51:51,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511436885] [2021-11-12 22:51:51,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:51,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:51:51,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:51:51,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:51:51,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2021-11-12 22:51:51,035 INFO L87 Difference]: Start difference. First operand 416 states and 538 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 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) [2021-11-12 22:51:56,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:56,958 INFO L93 Difference]: Finished difference Result 1104 states and 1433 transitions. [2021-11-12 22:51:56,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:51:56,959 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 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 42 [2021-11-12 22:51:56,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:56,965 INFO L225 Difference]: With dead ends: 1104 [2021-11-12 22:51:56,965 INFO L226 Difference]: Without dead ends: 1018 [2021-11-12 22:51:56,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2021-11-12 22:51:56,967 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 446 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5421.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.24ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5848.78ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:56,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1520 Invalid, 1273 Unknown, 0 Unchecked, 16.24ms Time], IncrementalHoareTripleChecker [14 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 5848.78ms Time] [2021-11-12 22:51:56,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2021-11-12 22:51:56,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 424. [2021-11-12 22:51:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 1.297872340425532) internal successors, (549), 423 states have internal predecessors, (549), 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) [2021-11-12 22:51:57,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 549 transitions. [2021-11-12 22:51:57,000 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 549 transitions. Word has length 42 [2021-11-12 22:51:57,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:57,001 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 549 transitions. [2021-11-12 22:51:57,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 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) [2021-11-12 22:51:57,001 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 549 transitions. [2021-11-12 22:51:57,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-12 22:51:57,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:57,003 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:57,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-12 22:51:57,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-12 22:51:57,228 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:51:57,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:57,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1065367817, now seen corresponding path program 1 times [2021-11-12 22:51:57,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:51:57,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606236198] [2021-11-12 22:51:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:57,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:51:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:57,353 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:51:57,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606236198] [2021-11-12 22:51:57,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606236198] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:51:57,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941944725] [2021-11-12 22:51:57,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:57,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:51:57,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:51:57,354 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:51:57,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-12 22:51:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:57,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 22:51:57,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:58,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:03,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941944725] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:03,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [84442319] [2021-11-12 22:52:03,089 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2021-11-12 22:52:03,089 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:52:03,089 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:52:03,090 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:52:03,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:52:03,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,116 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:03,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:52:03,117 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:03,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:52:03,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 22:52:03,123 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 10=[|v_#valid_15|]} [2021-11-12 22:52:03,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:03,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:52:03,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:52:03,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:52:03,140 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:52:03,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,146 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:03,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:03,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:03,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:03,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:52:03,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,169 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:52:03,169 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:52:03,170 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:52:03,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,175 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 22:52:03,179 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:52:03,179 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:137, output treesize:122 [2021-11-12 22:52:03,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:52:03,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-11-12 22:52:03,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-12 22:52:03,284 INFO L180 QuantifierPusher]: treesize reduction 21, result has 89.4 percent of original size [2021-11-12 22:52:03,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-11-12 22:52:03,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,380 INFO L180 QuantifierPusher]: treesize reduction 48, result has 53.8 percent of original size [2021-11-12 22:52:03,383 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 22:52:03,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,443 INFO L180 QuantifierPusher]: treesize reduction 18, result has 93.1 percent of original size [2021-11-12 22:52:03,446 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:03,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,450 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:03,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,456 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:03,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:52:03,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-11-12 22:52:03,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-11-12 22:52:03,488 INFO L185 QuantifierPusher]: treesize reduction 24, result has 89.8 percent of original size 212 [2021-11-12 22:52:03,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,562 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-12 22:52:03,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 22:52:03,588 INFO L180 QuantifierPusher]: treesize reduction 19, result has 89.6 percent of original size [2021-11-12 22:52:03,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-12 22:52:03,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,666 INFO L180 QuantifierPusher]: treesize reduction 18, result has 86.6 percent of original size [2021-11-12 22:52:03,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:52:03,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,698 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.4 percent of original size [2021-11-12 22:52:03,708 INFO L185 QuantifierPusher]: treesize reduction 24, result has 81.5 percent of original size 106 [2021-11-12 22:52:03,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-12 22:52:03,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 22:52:03,769 INFO L180 QuantifierPusher]: treesize reduction 19, result has 89.6 percent of original size [2021-11-12 22:52:03,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-12 22:52:03,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,826 INFO L180 QuantifierPusher]: treesize reduction 18, result has 86.6 percent of original size [2021-11-12 22:52:03,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:52:03,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,906 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.4 percent of original size [2021-11-12 22:52:03,916 INFO L185 QuantifierPusher]: treesize reduction 24, result has 81.5 percent of original size 106 [2021-11-12 22:52:03,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:03,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-12 22:52:03,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:03,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,021 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:04,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 22:52:04,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:04,294 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:04,299 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:04,304 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:04,306 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:04,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 22:52:04,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 535 [2021-11-12 22:52:04,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 548 [2021-11-12 22:52:04,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:04,374 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:52:13,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:52:13,126 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:52:13,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 12] total 27 [2021-11-12 22:52:13,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27784412] [2021-11-12 22:52:13,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:52:13,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-12 22:52:13,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:52:13,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-12 22:52:13,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1759, Unknown=0, NotChecked=0, Total=2162 [2021-11-12 22:52:13,129 INFO L87 Difference]: Start difference. First operand 424 states and 549 transitions. Second operand has 27 states, 27 states have (on average 3.5925925925925926) internal successors, (97), 27 states have internal predecessors, (97), 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) [2021-11-12 22:52:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:20,265 INFO L93 Difference]: Finished difference Result 1556 states and 2039 transitions. [2021-11-12 22:52:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-12 22:52:20,265 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5925925925925926) internal successors, (97), 27 states have internal predecessors, (97), 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 42 [2021-11-12 22:52:20,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:20,272 INFO L225 Difference]: With dead ends: 1556 [2021-11-12 22:52:20,272 INFO L226 Difference]: Without dead ends: 1198 [2021-11-12 22:52:20,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 82 SyntacticMatches, 10 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2785 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=1212, Invalid=4338, Unknown=0, NotChecked=0, Total=5550 [2021-11-12 22:52:20,276 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 602 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1548.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.48ms SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 1751.78ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:20,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 507 Invalid, 924 Unknown, 0 Unchecked, 5.48ms Time], IncrementalHoareTripleChecker [252 Valid, 547 Invalid, 0 Unknown, 125 Unchecked, 1751.78ms Time] [2021-11-12 22:52:20,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2021-11-12 22:52:20,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 650. [2021-11-12 22:52:20,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 649 states have (on average 1.3312788906009245) internal successors, (864), 649 states have internal predecessors, (864), 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) [2021-11-12 22:52:20,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 864 transitions. [2021-11-12 22:52:20,325 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 864 transitions. Word has length 42 [2021-11-12 22:52:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:20,326 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 864 transitions. [2021-11-12 22:52:20,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5925925925925926) internal successors, (97), 27 states have internal predecessors, (97), 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) [2021-11-12 22:52:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 864 transitions. [2021-11-12 22:52:20,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-12 22:52:20,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:20,328 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:20,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:20,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-12 22:52:20,550 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:52:20,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:20,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1272343763, now seen corresponding path program 1 times [2021-11-12 22:52:20,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:52:20,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771989236] [2021-11-12 22:52:20,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:20,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:52:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:52:20,640 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:52:20,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771989236] [2021-11-12 22:52:20,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771989236] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:52:20,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881626504] [2021-11-12 22:52:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:20,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:52:20,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:20,643 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:52:20,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-12 22:52:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:20,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:52:20,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-12 22:52:20,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:21,096 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-12 22:52:21,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881626504] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:21,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [132257668] [2021-11-12 22:52:21,099 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-12 22:52:21,099 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:52:21,100 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:52:21,100 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:52:21,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:52:21,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,133 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:21,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:52:21,135 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:21,135 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:52:21,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 22:52:21,140 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 10=[|v_#valid_16|]} [2021-11-12 22:52:21,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:21,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:52:21,154 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:52:21,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:52:21,156 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:52:21,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,161 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:21,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:21,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:21,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:21,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:52:21,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:52:21,186 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:52:21,187 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:52:21,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,192 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 22:52:21,196 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:52:21,197 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:137, output treesize:122 [2021-11-12 22:52:21,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,225 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-12 22:52:21,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-12 22:52:21,286 INFO L180 QuantifierPusher]: treesize reduction 15, result has 92.0 percent of original size [2021-11-12 22:52:21,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-11-12 22:52:21,305 INFO L180 QuantifierPusher]: treesize reduction 179, result has 0.6 percent of original size [2021-11-12 22:52:21,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-12 22:52:21,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,608 INFO L180 QuantifierPusher]: treesize reduction 116, result has 80.6 percent of original size [2021-11-12 22:52:21,632 INFO L185 QuantifierPusher]: treesize reduction 24, result has 94.8 percent of original size 435 [2021-11-12 22:52:21,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-12 22:52:21,676 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 22:52:21,694 INFO L180 QuantifierPusher]: treesize reduction 19, result has 89.6 percent of original size [2021-11-12 22:52:21,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-12 22:52:21,713 INFO L180 QuantifierPusher]: treesize reduction 25, result has 86.7 percent of original size [2021-11-12 22:52:21,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-12 22:52:21,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,828 INFO L180 QuantifierPusher]: treesize reduction 13, result has 94.9 percent of original size [2021-11-12 22:52:21,830 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:21,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:52:21,843 INFO L185 QuantifierPusher]: treesize reduction 24, result has 89.2 percent of original size 199 [2021-11-12 22:52:21,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-12 22:52:21,886 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:21,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-12 22:52:21,900 INFO L180 QuantifierPusher]: treesize reduction 21, result has 86.7 percent of original size [2021-11-12 22:52:21,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-12 22:52:21,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,970 INFO L180 QuantifierPusher]: treesize reduction 6, result has 92.1 percent of original size [2021-11-12 22:52:21,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-12 22:52:21,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:21,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,045 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.9 percent of original size [2021-11-12 22:52:22,056 INFO L185 QuantifierPusher]: treesize reduction 24, result has 82.1 percent of original size 110 [2021-11-12 22:52:22,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:22,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-12 22:52:22,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,186 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:22,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-12 22:52:22,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,408 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:22,423 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:22,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:22,433 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:22,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:22,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 22:52:22,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 530 [2021-11-12 22:52:22,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 543 [2021-11-12 22:52:22,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,580 INFO L180 QuantifierPusher]: treesize reduction 6, result has 92.1 percent of original size [2021-11-12 22:52:22,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-12 22:52:22,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:22,641 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:52:28,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:52:28,080 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:52:28,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2021-11-12 22:52:28,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961837785] [2021-11-12 22:52:28,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:52:28,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:52:28,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:52:28,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:52:28,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-11-12 22:52:28,082 INFO L87 Difference]: Start difference. First operand 650 states and 864 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2021-11-12 22:52:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:28,290 INFO L93 Difference]: Finished difference Result 1153 states and 1524 transitions. [2021-11-12 22:52:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:52:28,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 55 [2021-11-12 22:52:28,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:28,295 INFO L225 Difference]: With dead ends: 1153 [2021-11-12 22:52:28,295 INFO L226 Difference]: Without dead ends: 879 [2021-11-12 22:52:28,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 134 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2021-11-12 22:52:28,297 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 51 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.83ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.30ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:28,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 211 Invalid, 120 Unknown, 0 Unchecked, 0.83ms Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 155.30ms Time] [2021-11-12 22:52:28,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2021-11-12 22:52:28,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 794. [2021-11-12 22:52:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.3139974779319041) internal successors, (1042), 793 states have internal predecessors, (1042), 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) [2021-11-12 22:52:28,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1042 transitions. [2021-11-12 22:52:28,349 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1042 transitions. Word has length 55 [2021-11-12 22:52:28,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:28,349 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1042 transitions. [2021-11-12 22:52:28,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2021-11-12 22:52:28,350 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1042 transitions. [2021-11-12 22:52:28,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-12 22:52:28,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:28,352 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:28,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:28,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-11-12 22:52:28,580 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:52:28,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:28,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1454949057, now seen corresponding path program 1 times [2021-11-12 22:52:28,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:52:28,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577660291] [2021-11-12 22:52:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:28,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:52:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:52:28,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:52:28,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577660291] [2021-11-12 22:52:28,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577660291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:28,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:28,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 22:52:28,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098619813] [2021-11-12 22:52:28,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:28,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:52:28,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:52:28,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:52:28,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:52:28,814 INFO L87 Difference]: Start difference. First operand 794 states and 1042 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:29,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:29,189 INFO L93 Difference]: Finished difference Result 2177 states and 2811 transitions. [2021-11-12 22:52:29,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:52:29,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-12 22:52:29,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:29,197 INFO L225 Difference]: With dead ends: 2177 [2021-11-12 22:52:29,197 INFO L226 Difference]: Without dead ends: 1413 [2021-11-12 22:52:29,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:52:29,204 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 89 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 232.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 263.84ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:29,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 202 Invalid, 159 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [5 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 263.84ms Time] [2021-11-12 22:52:29,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2021-11-12 22:52:29,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1089. [2021-11-12 22:52:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1088 states have (on average 1.296875) internal successors, (1411), 1088 states have internal predecessors, (1411), 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) [2021-11-12 22:52:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1411 transitions. [2021-11-12 22:52:29,315 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1411 transitions. Word has length 55 [2021-11-12 22:52:29,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:29,315 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 1411 transitions. [2021-11-12 22:52:29,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:29,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1411 transitions. [2021-11-12 22:52:29,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-12 22:52:29,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:29,318 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:29,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-11-12 22:52:29,321 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:52:29,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:29,322 INFO L85 PathProgramCache]: Analyzing trace with hash 524014106, now seen corresponding path program 2 times [2021-11-12 22:52:29,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:52:29,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061465254] [2021-11-12 22:52:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:29,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:52:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 53 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 22:52:29,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:52:29,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061465254] [2021-11-12 22:52:29,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061465254] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:52:29,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612192159] [2021-11-12 22:52:29,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:52:29,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:52:29,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:29,587 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:52:29,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-12 22:52:29,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-12 22:52:29,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:52:29,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:52:29,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-12 22:52:29,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-12 22:52:30,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612192159] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:30,072 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:52:30,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [9] total 15 [2021-11-12 22:52:30,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760409712] [2021-11-12 22:52:30,072 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:30,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:52:30,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:52:30,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:52:30,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:52:30,073 INFO L87 Difference]: Start difference. First operand 1089 states and 1411 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2021-11-12 22:52:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:30,482 INFO L93 Difference]: Finished difference Result 2332 states and 3033 transitions. [2021-11-12 22:52:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 22:52:30,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 57 [2021-11-12 22:52:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:30,495 INFO L225 Difference]: With dead ends: 2332 [2021-11-12 22:52:30,495 INFO L226 Difference]: Without dead ends: 1749 [2021-11-12 22:52:30,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:52:30,496 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 476 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 253.22ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:30,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 265 Invalid, 217 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [31 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 253.22ms Time] [2021-11-12 22:52:30,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2021-11-12 22:52:30,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1594. [2021-11-12 22:52:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 1.3113622096672943) internal successors, (2089), 1593 states have internal predecessors, (2089), 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) [2021-11-12 22:52:30,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2089 transitions. [2021-11-12 22:52:30,612 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2089 transitions. Word has length 57 [2021-11-12 22:52:30,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:30,613 INFO L470 AbstractCegarLoop]: Abstraction has 1594 states and 2089 transitions. [2021-11-12 22:52:30,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2021-11-12 22:52:30,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2089 transitions. [2021-11-12 22:52:30,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-12 22:52:30,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:30,616 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:30,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:30,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable312 [2021-11-12 22:52:30,820 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:52:30,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:30,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1886570400, now seen corresponding path program 1 times [2021-11-12 22:52:30,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:52:30,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295522059] [2021-11-12 22:52:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:30,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:52:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 36 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 22:52:30,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:52:30,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295522059] [2021-11-12 22:52:30,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295522059] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:52:30,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924971808] [2021-11-12 22:52:30,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:30,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:52:30,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:30,964 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:52:31,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-12 22:52:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:31,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 22:52:31,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 22:52:31,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:32,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924971808] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:32,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [627364846] [2021-11-12 22:52:32,121 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2021-11-12 22:52:32,121 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:52:32,121 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:52:32,121 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:52:32,121 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:52:32,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,138 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:32,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:52:32,139 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:32,140 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:52:32,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 22:52:32,144 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 10=[|v_#valid_17|]} [2021-11-12 22:52:32,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:32,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:52:32,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:52:32,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:52:32,158 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:52:32,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:32,162 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:32,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:32,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:32,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:32,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:52:32,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:52:32,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,183 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:52:32,183 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:52:32,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:32,187 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 22:52:32,191 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:52:32,191 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:137, output treesize:122 [2021-11-12 22:52:32,203 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:52:32,219 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-12 22:52:32,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-11-12 22:52:32,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-12 22:52:32,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-11-12 22:52:32,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:32,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-11-12 22:52:32,380 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:52:39,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [627364846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:39,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:52:39,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7, 9, 13] total 38 [2021-11-12 22:52:39,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120591114] [2021-11-12 22:52:39,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:39,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-12 22:52:39,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:52:39,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-12 22:52:39,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1207, Unknown=0, NotChecked=0, Total=1406 [2021-11-12 22:52:39,977 INFO L87 Difference]: Start difference. First operand 1594 states and 2089 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 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) [2021-11-12 22:52:44,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:44,350 INFO L93 Difference]: Finished difference Result 3785 states and 4970 transitions. [2021-11-12 22:52:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 22:52:44,351 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 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 60 [2021-11-12 22:52:44,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:44,370 INFO L225 Difference]: With dead ends: 3785 [2021-11-12 22:52:44,370 INFO L226 Difference]: Without dead ends: 3543 [2021-11-12 22:52:44,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=199, Invalid=1207, Unknown=0, NotChecked=0, Total=1406 [2021-11-12 22:52:44,373 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 468 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3783.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.62ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4159.62ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:44,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 2215 Invalid, 1615 Unknown, 0 Unchecked, 20.62ms Time], IncrementalHoareTripleChecker [6 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 4159.62ms Time] [2021-11-12 22:52:44,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-11-12 22:52:44,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 1571. [2021-11-12 22:52:44,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 1.3133757961783439) internal successors, (2062), 1570 states have internal predecessors, (2062), 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) [2021-11-12 22:52:44,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2062 transitions. [2021-11-12 22:52:44,526 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2062 transitions. Word has length 60 [2021-11-12 22:52:44,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:44,526 INFO L470 AbstractCegarLoop]: Abstraction has 1571 states and 2062 transitions. [2021-11-12 22:52:44,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 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) [2021-11-12 22:52:44,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2062 transitions. [2021-11-12 22:52:44,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-12 22:52:44,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:44,530 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:44,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:44,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable313 [2021-11-12 22:52:44,752 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:52:44,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:44,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2062490560, now seen corresponding path program 1 times [2021-11-12 22:52:44,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:52:44,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303924705] [2021-11-12 22:52:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:44,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:52:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 36 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 22:52:44,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:52:44,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303924705] [2021-11-12 22:52:44,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303924705] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:52:44,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348927874] [2021-11-12 22:52:44,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:44,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:52:44,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:44,921 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:52:44,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-12 22:52:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:44,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 22:52:44,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:45,338 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 22:52:45,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:46,101 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:46,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348927874] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:46,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1031181190] [2021-11-12 22:52:46,104 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2021-11-12 22:52:46,104 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:52:46,105 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:52:46,105 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:52:46,105 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:52:46,123 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,123 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:46,124 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,124 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:52:46,125 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:52:46,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:52:46,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 22:52:46,131 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 10=[|v_#valid_18|]} [2021-11-12 22:52:46,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:46,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:52:46,145 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:52:46,146 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:52:46,147 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:52:46,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:46,153 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:46,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:46,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:46,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:52:46,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:52:46,171 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:52:46,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:52:46,174 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:52:46,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:46,200 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 22:52:46,203 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:52:46,204 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:137, output treesize:122 [2021-11-12 22:52:46,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:52:46,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-12 22:52:46,263 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 22:52:46,279 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-12 22:52:46,305 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-11-12 22:52:46,394 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:46,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-11-12 22:52:46,418 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:53:01,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1031181190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:01,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:53:01,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7, 9, 13] total 38 [2021-11-12 22:53:01,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867145430] [2021-11-12 22:53:01,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:01,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-12 22:53:01,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:01,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-12 22:53:01,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1199, Unknown=0, NotChecked=0, Total=1406 [2021-11-12 22:53:01,250 INFO L87 Difference]: Start difference. First operand 1571 states and 2062 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 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) [2021-11-12 22:53:07,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:07,209 INFO L93 Difference]: Finished difference Result 3932 states and 5173 transitions. [2021-11-12 22:53:07,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 22:53:07,210 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 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 60 [2021-11-12 22:53:07,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:07,225 INFO L225 Difference]: With dead ends: 3932 [2021-11-12 22:53:07,225 INFO L226 Difference]: Without dead ends: 3531 [2021-11-12 22:53:07,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=207, Invalid=1199, Unknown=0, NotChecked=0, Total=1406 [2021-11-12 22:53:07,228 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 442 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5311.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.54ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5741.55ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:07,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 1823 Invalid, 1400 Unknown, 0 Unchecked, 17.54ms Time], IncrementalHoareTripleChecker [7 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 5741.55ms Time] [2021-11-12 22:53:07,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2021-11-12 22:53:07,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 1571. [2021-11-12 22:53:07,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 1.3133757961783439) internal successors, (2062), 1570 states have internal predecessors, (2062), 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) [2021-11-12 22:53:07,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2062 transitions. [2021-11-12 22:53:07,388 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2062 transitions. Word has length 60 [2021-11-12 22:53:07,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:07,389 INFO L470 AbstractCegarLoop]: Abstraction has 1571 states and 2062 transitions. [2021-11-12 22:53:07,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 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) [2021-11-12 22:53:07,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2062 transitions. [2021-11-12 22:53:07,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-12 22:53:07,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:07,393 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:07,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:07,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable316 [2021-11-12 22:53:07,608 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:53:07,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:07,609 INFO L85 PathProgramCache]: Analyzing trace with hash -218713419, now seen corresponding path program 1 times [2021-11-12 22:53:07,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:07,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933551093] [2021-11-12 22:53:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:07,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:07,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:07,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933551093] [2021-11-12 22:53:07,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933551093] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:53:07,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458334507] [2021-11-12 22:53:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:07,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:53:07,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:53:07,800 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:53:07,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-12 22:53:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:07,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 22:53:07,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 22:53:08,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:09,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458334507] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:53:09,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1725716007] [2021-11-12 22:53:09,059 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-12 22:53:09,059 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:53:09,060 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:53:09,060 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:53:09,060 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:53:09,080 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,081 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:53:09,081 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:53:09,082 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:53:09,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:53:09,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 22:53:09,089 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_18|], 10=[|v_#valid_19|]} [2021-11-12 22:53:09,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:09,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:53:09,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:53:09,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:53:09,104 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:53:09,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,108 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:09,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:09,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:09,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:09,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:53:09,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:53:09,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:53:09,135 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:53:09,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,140 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 22:53:09,144 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:53:09,144 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:137, output treesize:122 [2021-11-12 22:53:09,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:53:09,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-11-12 22:53:09,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 22:53:09,260 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-12 22:53:09,292 INFO L180 QuantifierPusher]: treesize reduction 21, result has 89.7 percent of original size [2021-11-12 22:53:09,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-12 22:53:09,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,333 INFO L180 QuantifierPusher]: treesize reduction 48, result has 53.8 percent of original size [2021-11-12 22:53:09,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 22:53:09,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,395 INFO L180 QuantifierPusher]: treesize reduction 48, result has 74.2 percent of original size [2021-11-12 22:53:09,404 INFO L185 QuantifierPusher]: treesize reduction 24, result has 78.0 percent of original size 85 [2021-11-12 22:53:09,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,452 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-12 22:53:09,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 22:53:09,471 INFO L180 QuantifierPusher]: treesize reduction 19, result has 89.6 percent of original size [2021-11-12 22:53:09,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-12 22:53:09,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,540 INFO L180 QuantifierPusher]: treesize reduction 30, result has 79.0 percent of original size [2021-11-12 22:53:09,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-12 22:53:09,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,596 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.4 percent of original size [2021-11-12 22:53:09,606 INFO L185 QuantifierPusher]: treesize reduction 24, result has 81.5 percent of original size 106 [2021-11-12 22:53:09,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-12 22:53:09,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 22:53:09,663 INFO L180 QuantifierPusher]: treesize reduction 19, result has 89.6 percent of original size [2021-11-12 22:53:09,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-12 22:53:09,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,720 INFO L180 QuantifierPusher]: treesize reduction 30, result has 79.0 percent of original size [2021-11-12 22:53:09,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-12 22:53:09,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,826 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.4 percent of original size [2021-11-12 22:53:09,836 INFO L185 QuantifierPusher]: treesize reduction 24, result has 81.5 percent of original size 106 [2021-11-12 22:53:09,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,867 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-12 22:53:09,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:09,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 22:53:09,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:09,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,145 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:10,162 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:53:10,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:10,172 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:53:10,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:10,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 22:53:10,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 540 [2021-11-12 22:53:10,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 553 [2021-11-12 22:53:10,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:10,247 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:53:23,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:53:23,119 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:53:23,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 27 [2021-11-12 22:53:23,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799035075] [2021-11-12 22:53:23,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:53:23,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-12 22:53:23,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-12 22:53:23,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=2134, Unknown=0, NotChecked=0, Total=2450 [2021-11-12 22:53:23,120 INFO L87 Difference]: Start difference. First operand 1571 states and 2062 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:27,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:27,977 INFO L93 Difference]: Finished difference Result 3745 states and 4915 transitions. [2021-11-12 22:53:27,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-12 22:53:27,978 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-12 22:53:27,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:27,986 INFO L225 Difference]: With dead ends: 3745 [2021-11-12 22:53:27,986 INFO L226 Difference]: Without dead ends: 2194 [2021-11-12 22:53:27,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 127 SyntacticMatches, 17 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5172 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=1649, Invalid=11007, Unknown=0, NotChecked=0, Total=12656 [2021-11-12 22:53:27,993 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 972 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1358.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.39ms SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1545.93ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:27,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 741 Invalid, 1597 Unknown, 0 Unchecked, 6.39ms Time], IncrementalHoareTripleChecker [268 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 1545.93ms Time] [2021-11-12 22:53:27,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2021-11-12 22:53:28,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 1273. [2021-11-12 22:53:28,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1272 states have (on average 1.1863207547169812) internal successors, (1509), 1272 states have internal predecessors, (1509), 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) [2021-11-12 22:53:28,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1509 transitions. [2021-11-12 22:53:28,127 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1509 transitions. Word has length 61 [2021-11-12 22:53:28,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:28,128 INFO L470 AbstractCegarLoop]: Abstraction has 1273 states and 1509 transitions. [2021-11-12 22:53:28,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:28,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1509 transitions. [2021-11-12 22:53:28,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-12 22:53:28,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:28,131 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:28,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:28,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable319 [2021-11-12 22:53:28,344 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:53:28,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:28,345 INFO L85 PathProgramCache]: Analyzing trace with hash 875677120, now seen corresponding path program 1 times [2021-11-12 22:53:28,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:28,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870419290] [2021-11-12 22:53:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:28,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:28,431 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-12 22:53:28,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:28,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870419290] [2021-11-12 22:53:28,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870419290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:28,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:28,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:53:28,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393691507] [2021-11-12 22:53:28,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:28,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:53:28,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:28,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:53:28,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:53:28,433 INFO L87 Difference]: Start difference. First operand 1273 states and 1509 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:28,847 INFO L93 Difference]: Finished difference Result 2291 states and 2689 transitions. [2021-11-12 22:53:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:53:28,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-12 22:53:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:28,858 INFO L225 Difference]: With dead ends: 2291 [2021-11-12 22:53:28,858 INFO L226 Difference]: Without dead ends: 2102 [2021-11-12 22:53:28,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:53:28,860 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 189 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 202.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 234.72ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:28,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 371 Invalid, 162 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [3 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 234.72ms Time] [2021-11-12 22:53:28,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2021-11-12 22:53:28,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 1278. [2021-11-12 22:53:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 1.1863743148003132) internal successors, (1515), 1277 states have internal predecessors, (1515), 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) [2021-11-12 22:53:28,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1515 transitions. [2021-11-12 22:53:28,992 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1515 transitions. Word has length 63 [2021-11-12 22:53:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:28,992 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 1515 transitions. [2021-11-12 22:53:28,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1515 transitions. [2021-11-12 22:53:28,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-12 22:53:28,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:28,995 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:28,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable466 [2021-11-12 22:53:28,995 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:53:28,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:28,996 INFO L85 PathProgramCache]: Analyzing trace with hash -850654911, now seen corresponding path program 1 times [2021-11-12 22:53:28,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:28,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316496047] [2021-11-12 22:53:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:28,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-12 22:53:29,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:29,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316496047] [2021-11-12 22:53:29,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316496047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:29,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:29,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 22:53:29,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962230648] [2021-11-12 22:53:29,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:29,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:53:29,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:53:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:53:29,123 INFO L87 Difference]: Start difference. First operand 1278 states and 1515 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:29,852 INFO L93 Difference]: Finished difference Result 3036 states and 3566 transitions. [2021-11-12 22:53:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:53:29,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-12 22:53:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:29,863 INFO L225 Difference]: With dead ends: 3036 [2021-11-12 22:53:29,864 INFO L226 Difference]: Without dead ends: 2847 [2021-11-12 22:53:29,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:53:29,865 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 284 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 373.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.71ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 430.44ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:29,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 633 Invalid, 273 Unknown, 0 Unchecked, 2.71ms Time], IncrementalHoareTripleChecker [5 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 430.44ms Time] [2021-11-12 22:53:29,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2021-11-12 22:53:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1276. [2021-11-12 22:53:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 1.1858823529411764) internal successors, (1512), 1275 states have internal predecessors, (1512), 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) [2021-11-12 22:53:29,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1512 transitions. [2021-11-12 22:53:29,983 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1512 transitions. Word has length 66 [2021-11-12 22:53:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:29,983 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1512 transitions. [2021-11-12 22:53:29,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:53:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1512 transitions. [2021-11-12 22:53:29,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-12 22:53:29,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:29,986 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:29,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable467 [2021-11-12 22:53:29,986 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:53:29,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:29,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1481959075, now seen corresponding path program 1 times [2021-11-12 22:53:29,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:29,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513165928] [2021-11-12 22:53:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:29,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-12 22:53:30,119 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:30,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513165928] [2021-11-12 22:53:30,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513165928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:30,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:30,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 22:53:30,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238921847] [2021-11-12 22:53:30,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:30,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:53:30,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:30,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:53:30,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:53:30,120 INFO L87 Difference]: Start difference. First operand 1276 states and 1512 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 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) [2021-11-12 22:53:30,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:30,891 INFO L93 Difference]: Finished difference Result 3265 states and 3838 transitions. [2021-11-12 22:53:30,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:53:30,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 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 68 [2021-11-12 22:53:30,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:30,905 INFO L225 Difference]: With dead ends: 3265 [2021-11-12 22:53:30,906 INFO L226 Difference]: Without dead ends: 2865 [2021-11-12 22:53:30,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:53:30,907 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 377 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 426.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.72ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 502.24ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:30,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 905 Invalid, 383 Unknown, 0 Unchecked, 2.72ms Time], IncrementalHoareTripleChecker [7 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 502.24ms Time] [2021-11-12 22:53:30,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-11-12 22:53:31,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 1246. [2021-11-12 22:53:31,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 1.1863453815261045) internal successors, (1477), 1245 states have internal predecessors, (1477), 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) [2021-11-12 22:53:31,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1477 transitions. [2021-11-12 22:53:31,035 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1477 transitions. Word has length 68 [2021-11-12 22:53:31,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:31,036 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 1477 transitions. [2021-11-12 22:53:31,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 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) [2021-11-12 22:53:31,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1477 transitions. [2021-11-12 22:53:31,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-12 22:53:31,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:31,038 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:31,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable468 [2021-11-12 22:53:31,039 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:53:31,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:31,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1017690229, now seen corresponding path program 1 times [2021-11-12 22:53:31,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:31,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636050311] [2021-11-12 22:53:31,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:31,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-12 22:53:31,124 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:31,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636050311] [2021-11-12 22:53:31,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636050311] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:53:31,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81028110] [2021-11-12 22:53:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:31,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:53:31,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:53:31,128 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:53:31,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-12 22:53:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:31,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:53:31,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 22:53:31,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:31,597 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 22:53:31,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81028110] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:53:31,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1534880855] [2021-11-12 22:53:31,599 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2021-11-12 22:53:31,599 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:53:31,599 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:53:31,599 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:53:31,600 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:53:31,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,664 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:53:31,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,664 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:53:31,665 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:53:31,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:53:31,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-12 22:53:31,669 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_19|], 10=[|v_#valid_20|]} [2021-11-12 22:53:31,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:31,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:53:31,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:53:31,682 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:53:31,682 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:53:31,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,686 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:31,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:31,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:31,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:53:31,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:53:31,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:53:31,707 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:53:31,708 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:53:31,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,711 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-11-12 22:53:31,715 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:53:31,715 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:137, output treesize:122 [2021-11-12 22:53:31,739 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-12 22:53:31,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-11-12 22:53:31,774 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,777 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-12 22:53:31,789 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,792 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-12 22:53:31,815 INFO L180 QuantifierPusher]: treesize reduction 21, result has 89.4 percent of original size [2021-11-12 22:53:31,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-11-12 22:53:31,827 INFO L180 QuantifierPusher]: treesize reduction 183, result has 0.5 percent of original size [2021-11-12 22:53:31,828 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-12 22:53:31,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,892 INFO L180 QuantifierPusher]: treesize reduction 48, result has 53.8 percent of original size [2021-11-12 22:53:31,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-12 22:53:31,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,920 INFO L180 QuantifierPusher]: treesize reduction 12, result has 93.0 percent of original size [2021-11-12 22:53:31,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-12 22:53:31,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,965 INFO L180 QuantifierPusher]: treesize reduction 48, result has 74.2 percent of original size [2021-11-12 22:53:31,973 INFO L185 QuantifierPusher]: treesize reduction 24, result has 78.0 percent of original size 85 [2021-11-12 22:53:31,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:31,992 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:31,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-12 22:53:32,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:32,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 22:53:32,015 INFO L180 QuantifierPusher]: treesize reduction 19, result has 89.6 percent of original size [2021-11-12 22:53:32,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-12 22:53:32,030 INFO L180 QuantifierPusher]: treesize reduction 25, result has 86.7 percent of original size [2021-11-12 22:53:32,037 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-12 22:53:32,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,117 INFO L180 QuantifierPusher]: treesize reduction 51, result has 69.5 percent of original size [2021-11-12 22:53:32,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:53:32,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,142 INFO L180 QuantifierPusher]: treesize reduction 18, result has 79.5 percent of original size [2021-11-12 22:53:32,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-12 22:53:32,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,185 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.4 percent of original size [2021-11-12 22:53:32,193 INFO L185 QuantifierPusher]: treesize reduction 24, result has 81.5 percent of original size 106 [2021-11-12 22:53:32,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:32,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-12 22:53:32,220 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:32,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 22:53:32,234 INFO L180 QuantifierPusher]: treesize reduction 19, result has 89.6 percent of original size [2021-11-12 22:53:32,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-12 22:53:32,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,285 INFO L180 QuantifierPusher]: treesize reduction 6, result has 92.1 percent of original size [2021-11-12 22:53:32,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-12 22:53:32,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,343 INFO L180 QuantifierPusher]: treesize reduction 51, result has 69.5 percent of original size [2021-11-12 22:53:32,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:53:32,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,398 INFO L180 QuantifierPusher]: treesize reduction 6, result has 96.4 percent of original size [2021-11-12 22:53:32,409 INFO L185 QuantifierPusher]: treesize reduction 24, result has 81.5 percent of original size 106 [2021-11-12 22:53:32,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,434 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:32,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-12 22:53:32,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:32,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-11-12 22:53:32,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:32,670 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:53:32,676 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:32,682 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:53:32,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:32,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-12 22:53:32,694 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:53:32,696 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:53:32,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 213 [2021-11-12 22:53:32,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 542 [2021-11-12 22:53:32,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 555 [2021-11-12 22:53:32,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,813 INFO L180 QuantifierPusher]: treesize reduction 6, result has 92.1 percent of original size [2021-11-12 22:53:32,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-12 22:53:32,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:53:32,874 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:53:41,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:53:41,452 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:53:41,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2021-11-12 22:53:41,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025239822] [2021-11-12 22:53:41,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:53:41,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:53:41,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:53:41,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:53:41,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2021-11-12 22:53:41,454 INFO L87 Difference]: Start difference. First operand 1246 states and 1477 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 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) [2021-11-12 22:53:42,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:42,109 INFO L93 Difference]: Finished difference Result 3497 states and 4197 transitions. [2021-11-12 22:53:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:53:42,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 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 68 [2021-11-12 22:53:42,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:42,115 INFO L225 Difference]: With dead ends: 3497 [2021-11-12 22:53:42,115 INFO L226 Difference]: Without dead ends: 1944 [2021-11-12 22:53:42,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 163 SyntacticMatches, 26 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2021-11-12 22:53:42,118 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 316 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 333.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.83ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 384.36ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:42,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 246 Invalid, 371 Unknown, 0 Unchecked, 1.83ms Time], IncrementalHoareTripleChecker [55 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 384.36ms Time] [2021-11-12 22:53:42,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2021-11-12 22:53:42,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1624. [2021-11-12 22:53:42,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 1.18422674060382) internal successors, (1922), 1623 states have internal predecessors, (1922), 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) [2021-11-12 22:53:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 1922 transitions. [2021-11-12 22:53:42,272 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 1922 transitions. Word has length 68 [2021-11-12 22:53:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:42,273 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 1922 transitions. [2021-11-12 22:53:42,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 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) [2021-11-12 22:53:42,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 1922 transitions. [2021-11-12 22:53:42,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-12 22:53:42,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:42,275 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:42,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:42,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable469 [2021-11-12 22:53:42,500 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-12 22:53:42,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:42,501 INFO L85 PathProgramCache]: Analyzing trace with hash -893504654, now seen corresponding path program 1 times [2021-11-12 22:53:42,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:53:42,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439018272] [2021-11-12 22:53:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:42,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:53:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:42,638 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 22:53:42,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:53:42,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439018272] [2021-11-12 22:53:42,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439018272] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:53:42,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017621078] [2021-11-12 22:53:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:42,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:53:42,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:53:42,640 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:53:42,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_382d4d04-a55e-4ed0-98a1-e4122683532f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-12 22:53:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:43,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:53:43,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-12 22:53:43,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 22:53:43,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017621078] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:53:43,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1515110639] [2021-11-12 22:53:43,792 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-12 22:53:43,793 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:53:43,793 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:53:43,793 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:53:43,793 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs