./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P --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 64bit --witnessprinter.graph.data.programhash 1978406b317087fc6936fcfda9d4ee773e4c87c61c4595e0ff4751e61b0b216a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:17:02,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:17:02,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:17:02,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:17:02,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:17:02,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:17:02,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:17:02,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:17:02,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:17:02,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:17:02,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:17:02,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:17:02,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:17:02,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:17:02,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:17:02,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:17:02,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:17:02,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:17:02,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:17:02,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:17:02,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:17:02,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:17:02,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:17:02,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:17:02,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:17:02,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:17:02,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:17:02,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:17:02,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:17:02,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:17:02,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:17:02,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:17:02,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:17:02,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:17:02,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:17:02,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:17:02,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:17:02,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:17:02,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:17:02,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:17:02,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:17:02,346 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-20 23:17:02,395 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:17:02,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:17:02,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:17:02,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:17:02,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:17:02,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:17:02,404 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:17:02,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:17:02,404 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:17:02,404 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:17:02,406 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:17:02,406 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:17:02,406 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:17:02,407 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:17:02,407 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:17:02,407 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:17:02,407 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:17:02,408 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:17:02,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:17:02,409 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 23:17:02,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:17:02,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:17:02,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:17:02,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:17:02,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:17:02,411 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-20 23:17:02,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:17:02,413 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:17:02,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:17:02,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:17:02,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:17:02,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:17:02,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:17:02,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:17:02,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:17:02,415 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:17:02,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:17:02,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:17:02,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:17:02,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:17:02,416 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_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1978406b317087fc6936fcfda9d4ee773e4c87c61c4595e0ff4751e61b0b216a [2021-11-20 23:17:02,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:17:02,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:17:02,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:17:02,701 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:17:02,702 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:17:02,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c [2021-11-20 23:17:02,801 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/data/032f2dedb/68de2bb9dbbb4b58ba8533e9b8de7cb7/FLAGfa9a9078a [2021-11-20 23:17:03,250 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:17:03,250 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c [2021-11-20 23:17:03,256 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/data/032f2dedb/68de2bb9dbbb4b58ba8533e9b8de7cb7/FLAGfa9a9078a [2021-11-20 23:17:03,642 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/data/032f2dedb/68de2bb9dbbb4b58ba8533e9b8de7cb7 [2021-11-20 23:17:03,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:17:03,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:17:03,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:17:03,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:17:03,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:17:03,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:17:03" (1/1) ... [2021-11-20 23:17:03,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb7e73f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:03, skipping insertion in model container [2021-11-20 23:17:03,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:17:03" (1/1) ... [2021-11-20 23:17:03,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:17:03,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:17:03,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:17:03,855 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:17:03,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:17:03,881 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:17:03,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:03 WrapperNode [2021-11-20 23:17:03,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:17:03,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:17:03,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:17:03,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:17:03,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:03" (1/1) ... [2021-11-20 23:17:03,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:03" (1/1) ... [2021-11-20 23:17:03,915 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2021-11-20 23:17:03,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:17:03,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:17:03,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:17:03,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:17:03,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:03" (1/1) ... [2021-11-20 23:17:03,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:03" (1/1) ... [2021-11-20 23:17:03,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:03" (1/1) ... [2021-11-20 23:17:03,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:03" (1/1) ... [2021-11-20 23:17:03,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:03" (1/1) ... [2021-11-20 23:17:03,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:03" (1/1) ... [2021-11-20 23:17:03,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:03" (1/1) ... [2021-11-20 23:17:03,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:17:03,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:17:03,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:17:03,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:17:03,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:03" (1/1) ... [2021-11-20 23:17:03,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:17:03,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:03,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:17:04,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:17:04,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:17:04,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:17:04,125 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:17:04,129 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:17:04,265 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:17:04,288 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:17:04,288 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 23:17:04,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:17:04 BoogieIcfgContainer [2021-11-20 23:17:04,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:17:04,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:17:04,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:17:04,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:17:04,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:17:03" (1/3) ... [2021-11-20 23:17:04,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e5877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:17:04, skipping insertion in model container [2021-11-20 23:17:04,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:03" (2/3) ... [2021-11-20 23:17:04,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e5877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:17:04, skipping insertion in model container [2021-11-20 23:17:04,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:17:04" (3/3) ... [2021-11-20 23:17:04,316 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random2d.c [2021-11-20 23:17:04,321 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:17:04,321 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-20 23:17:04,378 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:17:04,387 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 [2021-11-20 23:17:04,387 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-20 23:17:04,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 27 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) [2021-11-20 23:17:04,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 23:17:04,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:04,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 23:17:04,412 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:04,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:04,418 INFO L85 PathProgramCache]: Analyzing trace with hash 94531, now seen corresponding path program 1 times [2021-11-20 23:17:04,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:04,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11065638] [2021-11-20 23:17:04,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:04,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:04,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:04,620 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:04,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11065638] [2021-11-20 23:17:04,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11065638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:04,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:04,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-20 23:17:04,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143865889] [2021-11-20 23:17:04,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:04,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:17:04,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:04,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:17:04,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:04,658 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 27 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) Second operand has 3 states, 2 states have (on average 1.5) 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) [2021-11-20 23:17:04,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:04,714 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-11-20 23:17:04,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:17:04,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) 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 [2021-11-20 23:17:04,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:04,725 INFO L225 Difference]: With dead ends: 33 [2021-11-20 23:17:04,726 INFO L226 Difference]: Without dead ends: 30 [2021-11-20 23:17:04,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:04,733 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:04,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:17:04,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-20 23:17:04,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-11-20 23:17:04,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 28 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) [2021-11-20 23:17:04,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-11-20 23:17:04,769 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 3 [2021-11-20 23:17:04,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:04,770 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-11-20 23:17:04,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) 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) [2021-11-20 23:17:04,770 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-11-20 23:17:04,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 23:17:04,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:04,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 23:17:04,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:17:04,772 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:04,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:04,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2930506, now seen corresponding path program 1 times [2021-11-20 23:17:04,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:04,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466068694] [2021-11-20 23:17:04,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:04,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:04,795 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:04,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466068694] [2021-11-20 23:17:04,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466068694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:04,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:04,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-20 23:17:04,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021946480] [2021-11-20 23:17:04,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:04,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:17:04,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:04,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:17:04,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:04,800 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-20 23:17:04,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:04,812 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-11-20 23:17:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:17:04,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-11-20 23:17:04,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:04,814 INFO L225 Difference]: With dead ends: 29 [2021-11-20 23:17:04,814 INFO L226 Difference]: Without dead ends: 28 [2021-11-20 23:17:04,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:04,817 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:04,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 26 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:17:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-20 23:17:04,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-20 23:17:04,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.736842105263158) internal successors, (33), 27 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) [2021-11-20 23:17:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-11-20 23:17:04,824 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 4 [2021-11-20 23:17:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:04,825 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-11-20 23:17:04,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-20 23:17:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-11-20 23:17:04,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 23:17:04,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:04,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:04,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:17:04,827 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:04,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:04,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1403406088, now seen corresponding path program 1 times [2021-11-20 23:17:04,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:04,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348925316] [2021-11-20 23:17:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:04,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:04,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:04,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348925316] [2021-11-20 23:17:04,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348925316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:04,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:04,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-20 23:17:04,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695126838] [2021-11-20 23:17:04,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:04,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:17:04,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:04,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:17:04,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:04,859 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-20 23:17:04,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:04,932 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2021-11-20 23:17:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:17:04,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 23:17:04,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:04,934 INFO L225 Difference]: With dead ends: 51 [2021-11-20 23:17:04,934 INFO L226 Difference]: Without dead ends: 49 [2021-11-20 23:17:04,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:04,937 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:04,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:17:04,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-20 23:17:04,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2021-11-20 23:17:04,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 42 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 59 transitions. [2021-11-20 23:17:04,958 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 59 transitions. Word has length 7 [2021-11-20 23:17:04,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:04,959 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 59 transitions. [2021-11-20 23:17:04,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-20 23:17:04,959 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 59 transitions. [2021-11-20 23:17:04,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 23:17:04,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:04,960 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-11-20 23:17:04,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:17:04,961 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:04,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:04,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1403443247, now seen corresponding path program 1 times [2021-11-20 23:17:04,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:04,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320941582] [2021-11-20 23:17:04,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:04,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:04,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:04,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320941582] [2021-11-20 23:17:04,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320941582] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:04,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298179214] [2021-11-20 23:17:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:04,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:04,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:04,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:05,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:17:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:05,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:17:05,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:05,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:05,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:05,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:05,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298179214] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:05,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1771587842] [2021-11-20 23:17:05,188 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-20 23:17:05,188 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:17:05,198 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:17:05,203 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:17:05,204 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:05,733 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:17:05,847 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:17:05,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:17:05,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-20 23:17:05,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003148175] [2021-11-20 23:17:05,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:05,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:17:05,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:05,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:17:05,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:17:05,852 INFO L87 Difference]: Start difference. First operand 43 states and 59 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:05,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:05,936 INFO L93 Difference]: Finished difference Result 146 states and 202 transitions. [2021-11-20 23:17:05,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:17:05,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 23:17:05,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:05,940 INFO L225 Difference]: With dead ends: 146 [2021-11-20 23:17:05,942 INFO L226 Difference]: Without dead ends: 145 [2021-11-20 23:17:05,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:17:05,944 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 152 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:05,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 131 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:17:05,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-20 23:17:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 123. [2021-11-20 23:17:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 114 states have (on average 1.719298245614035) internal successors, (196), 122 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 196 transitions. [2021-11-20 23:17:05,977 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 196 transitions. Word has length 7 [2021-11-20 23:17:05,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:05,979 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 196 transitions. [2021-11-20 23:17:05,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:05,979 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 196 transitions. [2021-11-20 23:17:05,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:17:05,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:05,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:06,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-20 23:17:06,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:06,199 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:06,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:06,199 INFO L85 PathProgramCache]: Analyzing trace with hash 555915823, now seen corresponding path program 1 times [2021-11-20 23:17:06,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:06,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337972082] [2021-11-20 23:17:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:06,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:06,222 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:06,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337972082] [2021-11-20 23:17:06,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337972082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:06,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:06,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-20 23:17:06,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910849198] [2021-11-20 23:17:06,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:06,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:17:06,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:06,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:17:06,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:06,225 INFO L87 Difference]: Start difference. First operand 123 states and 196 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:06,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:06,248 INFO L93 Difference]: Finished difference Result 212 states and 337 transitions. [2021-11-20 23:17:06,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:17:06,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 23:17:06,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:06,251 INFO L225 Difference]: With dead ends: 212 [2021-11-20 23:17:06,251 INFO L226 Difference]: Without dead ends: 210 [2021-11-20 23:17:06,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:06,253 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:06,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:17:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-20 23:17:06,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 205. [2021-11-20 23:17:06,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 196 states have (on average 1.663265306122449) internal successors, (326), 204 states have internal predecessors, (326), 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) [2021-11-20 23:17:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 326 transitions. [2021-11-20 23:17:06,271 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 326 transitions. Word has length 8 [2021-11-20 23:17:06,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:06,271 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 326 transitions. [2021-11-20 23:17:06,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 326 transitions. [2021-11-20 23:17:06,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 23:17:06,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:06,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:06,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:17:06,273 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:06,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:06,273 INFO L85 PathProgramCache]: Analyzing trace with hash 53713073, now seen corresponding path program 1 times [2021-11-20 23:17:06,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:06,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432177682] [2021-11-20 23:17:06,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:06,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:06,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:06,310 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:06,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432177682] [2021-11-20 23:17:06,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432177682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:06,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:06,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-20 23:17:06,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605933565] [2021-11-20 23:17:06,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:06,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:17:06,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:06,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:17:06,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:06,313 INFO L87 Difference]: Start difference. First operand 205 states and 326 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-20 23:17:06,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:06,342 INFO L93 Difference]: Finished difference Result 345 states and 546 transitions. [2021-11-20 23:17:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:17:06,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 23:17:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:06,347 INFO L225 Difference]: With dead ends: 345 [2021-11-20 23:17:06,348 INFO L226 Difference]: Without dead ends: 343 [2021-11-20 23:17:06,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:06,349 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:06,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:17:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-11-20 23:17:06,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 330. [2021-11-20 23:17:06,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 321 states have (on average 1.5763239875389408) internal successors, (506), 329 states have internal predecessors, (506), 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) [2021-11-20 23:17:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 506 transitions. [2021-11-20 23:17:06,393 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 506 transitions. Word has length 9 [2021-11-20 23:17:06,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:06,394 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 506 transitions. [2021-11-20 23:17:06,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-20 23:17:06,394 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 506 transitions. [2021-11-20 23:17:06,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 23:17:06,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:06,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:06,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:17:06,395 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:06,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:06,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1665105336, now seen corresponding path program 1 times [2021-11-20 23:17:06,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:06,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64941651] [2021-11-20 23:17:06,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:06,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:06,430 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:06,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64941651] [2021-11-20 23:17:06,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64941651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:06,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:06,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-20 23:17:06,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487971155] [2021-11-20 23:17:06,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:06,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:17:06,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:06,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:17:06,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:06,433 INFO L87 Difference]: Start difference. First operand 330 states and 506 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:06,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:06,458 INFO L93 Difference]: Finished difference Result 549 states and 840 transitions. [2021-11-20 23:17:06,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:17:06,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-20 23:17:06,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:06,462 INFO L225 Difference]: With dead ends: 549 [2021-11-20 23:17:06,462 INFO L226 Difference]: Without dead ends: 547 [2021-11-20 23:17:06,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:06,464 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:06,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:17:06,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-20 23:17:06,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 542. [2021-11-20 23:17:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 533 states have (on average 1.5159474671669793) internal successors, (808), 541 states have internal predecessors, (808), 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) [2021-11-20 23:17:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 808 transitions. [2021-11-20 23:17:06,488 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 808 transitions. Word has length 10 [2021-11-20 23:17:06,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:06,489 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 808 transitions. [2021-11-20 23:17:06,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:06,489 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 808 transitions. [2021-11-20 23:17:06,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:17:06,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:06,491 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-20 23:17:06,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:17:06,492 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:06,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:06,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1107964330, now seen corresponding path program 1 times [2021-11-20 23:17:06,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:06,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515443407] [2021-11-20 23:17:06,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:06,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:06,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:06,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515443407] [2021-11-20 23:17:06,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515443407] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:06,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277910673] [2021-11-20 23:17:06,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:06,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:06,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:06,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:06,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:17:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:06,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:17:06,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:06,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:06,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277910673] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:06,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1764284645] [2021-11-20 23:17:06,692 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-20 23:17:06,693 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:17:06,693 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:17:06,694 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:17:06,694 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:07,495 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:17:07,794 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:17:07,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:17:07,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-20 23:17:07,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929788776] [2021-11-20 23:17:07,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:07,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:17:07,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:07,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:17:07,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:17:07,796 INFO L87 Difference]: Start difference. First operand 542 states and 808 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:07,876 INFO L93 Difference]: Finished difference Result 1046 states and 1607 transitions. [2021-11-20 23:17:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:17:07,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 23:17:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:07,885 INFO L225 Difference]: With dead ends: 1046 [2021-11-20 23:17:07,885 INFO L226 Difference]: Without dead ends: 1044 [2021-11-20 23:17:07,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:17:07,887 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 122 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:07,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 112 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:17:07,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-11-20 23:17:07,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 903. [2021-11-20 23:17:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 894 states have (on average 1.5279642058165548) internal successors, (1366), 902 states have internal predecessors, (1366), 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) [2021-11-20 23:17:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1366 transitions. [2021-11-20 23:17:07,920 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1366 transitions. Word has length 14 [2021-11-20 23:17:07,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:07,920 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 1366 transitions. [2021-11-20 23:17:07,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:07,921 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1366 transitions. [2021-11-20 23:17:07,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:17:07,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:07,922 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:07,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:08,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-20 23:17:08,140 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:08,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:08,140 INFO L85 PathProgramCache]: Analyzing trace with hash 953294341, now seen corresponding path program 1 times [2021-11-20 23:17:08,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:08,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286012148] [2021-11-20 23:17:08,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:08,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:08,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:08,176 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:08,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286012148] [2021-11-20 23:17:08,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286012148] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:08,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126354299] [2021-11-20 23:17:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:08,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:08,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:08,183 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:08,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:17:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:08,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:17:08,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:08,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:08,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:08,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126354299] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:08,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1096269345] [2021-11-20 23:17:08,304 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-20 23:17:08,305 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:17:08,305 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:17:08,305 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:17:08,305 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:08,949 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:17:09,137 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:17:09,137 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:17:09,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-20 23:17:09,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771145099] [2021-11-20 23:17:09,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:09,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:17:09,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:09,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:17:09,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:17:09,138 INFO L87 Difference]: Start difference. First operand 903 states and 1366 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:09,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:09,187 INFO L93 Difference]: Finished difference Result 1364 states and 2105 transitions. [2021-11-20 23:17:09,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:17:09,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 23:17:09,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:09,195 INFO L225 Difference]: With dead ends: 1364 [2021-11-20 23:17:09,195 INFO L226 Difference]: Without dead ends: 1362 [2021-11-20 23:17:09,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:17:09,197 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 84 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:09,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 66 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:17:09,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-11-20 23:17:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1060. [2021-11-20 23:17:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1052 states have (on average 1.518060836501901) internal successors, (1597), 1059 states have internal predecessors, (1597), 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) [2021-11-20 23:17:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1597 transitions. [2021-11-20 23:17:09,231 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1597 transitions. Word has length 16 [2021-11-20 23:17:09,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:09,232 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1597 transitions. [2021-11-20 23:17:09,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:09,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1597 transitions. [2021-11-20 23:17:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:09,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:09,234 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-20 23:17:09,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-20 23:17:09,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:09,455 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:09,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:09,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2065182968, now seen corresponding path program 1 times [2021-11-20 23:17:09,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:09,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519731375] [2021-11-20 23:17:09,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:09,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:09,486 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:09,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519731375] [2021-11-20 23:17:09,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519731375] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:09,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186004093] [2021-11-20 23:17:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:09,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:09,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:09,488 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:09,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:17:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:09,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:17:09,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:09,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:09,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186004093] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:09,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1395825129] [2021-11-20 23:17:09,606 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-20 23:17:09,606 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:17:09,607 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:17:09,607 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:17:09,607 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:10,314 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:17:10,597 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:17:10,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:17:10,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-20 23:17:10,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075760171] [2021-11-20 23:17:10,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:10,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:17:10,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:10,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:17:10,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:17:10,599 INFO L87 Difference]: Start difference. First operand 1060 states and 1597 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 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) [2021-11-20 23:17:10,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:10,706 INFO L93 Difference]: Finished difference Result 2461 states and 3871 transitions. [2021-11-20 23:17:10,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:17:10,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 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 18 [2021-11-20 23:17:10,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:10,734 INFO L225 Difference]: With dead ends: 2461 [2021-11-20 23:17:10,735 INFO L226 Difference]: Without dead ends: 2459 [2021-11-20 23:17:10,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:17:10,738 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 102 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:10,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 107 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:17:10,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2021-11-20 23:17:10,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2129. [2021-11-20 23:17:10,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2121 states have (on average 1.5223950966525224) internal successors, (3229), 2128 states have internal predecessors, (3229), 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) [2021-11-20 23:17:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3229 transitions. [2021-11-20 23:17:10,808 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3229 transitions. Word has length 18 [2021-11-20 23:17:10,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:10,809 INFO L470 AbstractCegarLoop]: Abstraction has 2129 states and 3229 transitions. [2021-11-20 23:17:10,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 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) [2021-11-20 23:17:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3229 transitions. [2021-11-20 23:17:10,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 23:17:10,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:10,813 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1] [2021-11-20 23:17:10,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:11,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:11,019 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:11,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:11,019 INFO L85 PathProgramCache]: Analyzing trace with hash -492631821, now seen corresponding path program 2 times [2021-11-20 23:17:11,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:11,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587978415] [2021-11-20 23:17:11,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:11,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 23:17:11,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:11,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587978415] [2021-11-20 23:17:11,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587978415] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:11,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458326243] [2021-11-20 23:17:11,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:17:11,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:11,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:11,053 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:11,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 23:17:11,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-20 23:17:11,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:17:11,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:17:11,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 23:17:11,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 23:17:11,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458326243] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:11,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [431456511] [2021-11-20 23:17:11,225 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-20 23:17:11,225 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:17:11,225 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:17:11,225 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:17:11,226 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:11,528 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:17:11,618 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:17:11,618 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:17:11,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-20 23:17:11,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407400501] [2021-11-20 23:17:11,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:11,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:17:11,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:11,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:17:11,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:17:11,620 INFO L87 Difference]: Start difference. First operand 2129 states and 3229 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:11,680 INFO L93 Difference]: Finished difference Result 2129 states and 3229 transitions. [2021-11-20 23:17:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:17:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 23:17:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:11,693 INFO L225 Difference]: With dead ends: 2129 [2021-11-20 23:17:11,694 INFO L226 Difference]: Without dead ends: 2128 [2021-11-20 23:17:11,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:17:11,697 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:11,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 50 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:17:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-11-20 23:17:11,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 1798. [2021-11-20 23:17:11,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1791 states have (on average 1.4874371859296482) internal successors, (2664), 1797 states have internal predecessors, (2664), 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) [2021-11-20 23:17:11,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2664 transitions. [2021-11-20 23:17:11,799 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2664 transitions. Word has length 19 [2021-11-20 23:17:11,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:11,799 INFO L470 AbstractCegarLoop]: Abstraction has 1798 states and 2664 transitions. [2021-11-20 23:17:11,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:11,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2664 transitions. [2021-11-20 23:17:11,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:17:11,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:11,801 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:11,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:12,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 23:17:12,018 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:12,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:12,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1112024197, now seen corresponding path program 1 times [2021-11-20 23:17:12,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:12,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813654933] [2021-11-20 23:17:12,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:12,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:12,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:12,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:12,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813654933] [2021-11-20 23:17:12,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813654933] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:12,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145727563] [2021-11-20 23:17:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:12,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:12,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:12,061 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:12,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 23:17:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:12,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:17:12,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:12,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:12,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145727563] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:12,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1857763305] [2021-11-20 23:17:12,193 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-20 23:17:12,193 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:17:12,193 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:17:12,194 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:17:12,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:13,067 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:17:13,361 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:17:13,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:17:13,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-20 23:17:13,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871408473] [2021-11-20 23:17:13,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:13,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:17:13,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:17:13,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:17:13,362 INFO L87 Difference]: Start difference. First operand 1798 states and 2664 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 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) [2021-11-20 23:17:13,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:13,429 INFO L93 Difference]: Finished difference Result 3110 states and 4688 transitions. [2021-11-20 23:17:13,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:17:13,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 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 20 [2021-11-20 23:17:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:13,448 INFO L225 Difference]: With dead ends: 3110 [2021-11-20 23:17:13,448 INFO L226 Difference]: Without dead ends: 3108 [2021-11-20 23:17:13,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:17:13,452 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 78 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:13,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 60 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:17:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2021-11-20 23:17:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2295. [2021-11-20 23:17:13,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2295 states, 2289 states have (on average 1.4600262123197902) internal successors, (3342), 2294 states have internal predecessors, (3342), 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) [2021-11-20 23:17:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3342 transitions. [2021-11-20 23:17:13,526 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3342 transitions. Word has length 20 [2021-11-20 23:17:13,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:13,526 INFO L470 AbstractCegarLoop]: Abstraction has 2295 states and 3342 transitions. [2021-11-20 23:17:13,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 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) [2021-11-20 23:17:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3342 transitions. [2021-11-20 23:17:13,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 23:17:13,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:13,528 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1] [2021-11-20 23:17:13,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:13,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:13,751 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:13,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:13,751 INFO L85 PathProgramCache]: Analyzing trace with hash -923998945, now seen corresponding path program 1 times [2021-11-20 23:17:13,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:13,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784220220] [2021-11-20 23:17:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:13,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:13,786 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:13,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784220220] [2021-11-20 23:17:13,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784220220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:13,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519619948] [2021-11-20 23:17:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:13,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:13,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:13,787 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:13,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 23:17:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:13,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:17:13,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:13,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:13,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519619948] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:13,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1131618446] [2021-11-20 23:17:13,962 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-20 23:17:13,963 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:17:13,963 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:17:13,963 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:17:13,963 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:14,535 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:17:14,719 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:17:14,719 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:17:14,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-20 23:17:14,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755175009] [2021-11-20 23:17:14,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:14,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:17:14,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:14,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:17:14,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:17:14,721 INFO L87 Difference]: Start difference. First operand 2295 states and 3342 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:14,853 INFO L93 Difference]: Finished difference Result 6600 states and 9697 transitions. [2021-11-20 23:17:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:17:14,854 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-20 23:17:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:14,892 INFO L225 Difference]: With dead ends: 6600 [2021-11-20 23:17:14,892 INFO L226 Difference]: Without dead ends: 6599 [2021-11-20 23:17:14,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:17:14,899 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 156 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:14,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 141 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:17:14,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6599 states. [2021-11-20 23:17:15,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6599 to 5400. [2021-11-20 23:17:15,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5400 states, 5394 states have (on average 1.4556915090841676) internal successors, (7852), 5399 states have internal predecessors, (7852), 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) [2021-11-20 23:17:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 7852 transitions. [2021-11-20 23:17:15,116 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 7852 transitions. Word has length 25 [2021-11-20 23:17:15,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:15,116 INFO L470 AbstractCegarLoop]: Abstraction has 5400 states and 7852 transitions. [2021-11-20 23:17:15,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:15,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 7852 transitions. [2021-11-20 23:17:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 23:17:15,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:15,118 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1] [2021-11-20 23:17:15,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:15,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 23:17:15,332 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:15,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1295272154, now seen corresponding path program 1 times [2021-11-20 23:17:15,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:15,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835103073] [2021-11-20 23:17:15,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:15,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:15,367 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:15,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:15,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835103073] [2021-11-20 23:17:15,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835103073] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:15,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432597562] [2021-11-20 23:17:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:15,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:15,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:15,369 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:15,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 23:17:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:15,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:17:15,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:15,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:15,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432597562] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:15,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [873282615] [2021-11-20 23:17:15,586 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-20 23:17:15,586 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:17:15,586 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:17:15,586 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:17:15,586 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:16,324 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:17:16,675 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:17:16,675 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:17:16,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-20 23:17:16,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674469763] [2021-11-20 23:17:16,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:16,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:17:16,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:16,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:17:16,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:17:16,676 INFO L87 Difference]: Start difference. First operand 5400 states and 7852 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-11-20 23:17:16,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:16,900 INFO L93 Difference]: Finished difference Result 15528 states and 22801 transitions. [2021-11-20 23:17:16,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:17:16,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 31 [2021-11-20 23:17:16,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:16,984 INFO L225 Difference]: With dead ends: 15528 [2021-11-20 23:17:16,984 INFO L226 Difference]: Without dead ends: 15527 [2021-11-20 23:17:16,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:17:16,997 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 140 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:16,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 141 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:17:17,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15527 states. [2021-11-20 23:17:17,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15527 to 12717. [2021-11-20 23:17:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12717 states, 12711 states have (on average 1.4511840138462748) internal successors, (18446), 12716 states have internal predecessors, (18446), 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) [2021-11-20 23:17:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12717 states to 12717 states and 18446 transitions. [2021-11-20 23:17:17,539 INFO L78 Accepts]: Start accepts. Automaton has 12717 states and 18446 transitions. Word has length 31 [2021-11-20 23:17:17,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:17,539 INFO L470 AbstractCegarLoop]: Abstraction has 12717 states and 18446 transitions. [2021-11-20 23:17:17,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-11-20 23:17:17,540 INFO L276 IsEmpty]: Start isEmpty. Operand 12717 states and 18446 transitions. [2021-11-20 23:17:17,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-20 23:17:17,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:17,544 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1] [2021-11-20 23:17:17,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:17,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 23:17:17,767 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:17,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:17,767 INFO L85 PathProgramCache]: Analyzing trace with hash 188182408, now seen corresponding path program 2 times [2021-11-20 23:17:17,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:17,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936387083] [2021-11-20 23:17:17,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:17,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:17,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:17,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936387083] [2021-11-20 23:17:17,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936387083] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:17,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600077989] [2021-11-20 23:17:17,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:17:17,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:17,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:17,834 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:17,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 23:17:17,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-20 23:17:17,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:17:17,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:17:17,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:17,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:18,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600077989] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:18,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1424705155] [2021-11-20 23:17:18,053 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-20 23:17:18,053 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:17:18,054 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:17:18,054 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:17:18,054 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:18,711 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:17:18,977 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:17:18,977 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:17:18,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-20 23:17:18,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223364494] [2021-11-20 23:17:18,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:18,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:17:18,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:18,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:17:18,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:17:18,979 INFO L87 Difference]: Start difference. First operand 12717 states and 18446 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2021-11-20 23:17:19,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:19,547 INFO L93 Difference]: Finished difference Result 43312 states and 64319 transitions. [2021-11-20 23:17:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:17:19,547 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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 35 [2021-11-20 23:17:19,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:19,663 INFO L225 Difference]: With dead ends: 43312 [2021-11-20 23:17:19,663 INFO L226 Difference]: Without dead ends: 43310 [2021-11-20 23:17:19,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:17:19,695 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 325 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:19,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 222 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:17:19,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43310 states. [2021-11-20 23:17:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43310 to 27375. [2021-11-20 23:17:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27375 states, 27369 states have (on average 1.4275274946106908) internal successors, (39070), 27374 states have internal predecessors, (39070), 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) [2021-11-20 23:17:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27375 states to 27375 states and 39070 transitions. [2021-11-20 23:17:20,692 INFO L78 Accepts]: Start accepts. Automaton has 27375 states and 39070 transitions. Word has length 35 [2021-11-20 23:17:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:20,693 INFO L470 AbstractCegarLoop]: Abstraction has 27375 states and 39070 transitions. [2021-11-20 23:17:20,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2021-11-20 23:17:20,693 INFO L276 IsEmpty]: Start isEmpty. Operand 27375 states and 39070 transitions. [2021-11-20 23:17:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 23:17:20,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:20,697 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1] [2021-11-20 23:17:20,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:20,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 23:17:20,903 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:20,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash -14465935, now seen corresponding path program 2 times [2021-11-20 23:17:20,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:20,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118419734] [2021-11-20 23:17:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:20,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:20,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:20,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118419734] [2021-11-20 23:17:20,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118419734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:20,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55458491] [2021-11-20 23:17:20,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:17:20,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:20,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:20,975 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:20,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 23:17:21,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-20 23:17:21,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:17:21,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:17:21,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:21,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:21,258 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:21,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55458491] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:21,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1129436891] [2021-11-20 23:17:21,260 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-20 23:17:21,260 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:17:21,261 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:17:21,261 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:17:21,261 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:21,926 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:17:22,226 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:17:22,227 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:17:22,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-20 23:17:22,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192334203] [2021-11-20 23:17:22,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:22,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:17:22,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:22,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:17:22,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-11-20 23:17:22,229 INFO L87 Difference]: Start difference. First operand 27375 states and 39070 transitions. Second operand has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 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) [2021-11-20 23:17:23,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:23,178 INFO L93 Difference]: Finished difference Result 93112 states and 136145 transitions. [2021-11-20 23:17:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:17:23,178 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 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 45 [2021-11-20 23:17:23,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:23,394 INFO L225 Difference]: With dead ends: 93112 [2021-11-20 23:17:23,395 INFO L226 Difference]: Without dead ends: 93110 [2021-11-20 23:17:23,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-11-20 23:17:23,415 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 319 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:23,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 222 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:17:23,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93110 states. [2021-11-20 23:17:24,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93110 to 58897. [2021-11-20 23:17:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58897 states, 58891 states have (on average 1.4050703842692431) internal successors, (82746), 58896 states have internal predecessors, (82746), 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) [2021-11-20 23:17:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58897 states to 58897 states and 82746 transitions. [2021-11-20 23:17:25,330 INFO L78 Accepts]: Start accepts. Automaton has 58897 states and 82746 transitions. Word has length 45 [2021-11-20 23:17:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:25,331 INFO L470 AbstractCegarLoop]: Abstraction has 58897 states and 82746 transitions. [2021-11-20 23:17:25,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 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) [2021-11-20 23:17:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 58897 states and 82746 transitions. [2021-11-20 23:17:25,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-20 23:17:25,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:25,334 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 1, 1] [2021-11-20 23:17:25,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:25,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 23:17:25,535 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:25,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:25,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1069468473, now seen corresponding path program 2 times [2021-11-20 23:17:25,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:25,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026826720] [2021-11-20 23:17:25,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:25,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:25,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:25,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026826720] [2021-11-20 23:17:25,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026826720] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:25,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705241744] [2021-11-20 23:17:25,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:17:25,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:25,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:25,615 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:25,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 23:17:25,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-20 23:17:25,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:17:25,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:17:25,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:25,868 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:25,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:26,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705241744] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:26,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1457385126] [2021-11-20 23:17:26,102 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-20 23:17:26,102 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:17:26,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:17:26,103 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:17:26,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:26,686 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:17:26,885 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:17:26,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:17:26,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2021-11-20 23:17:26,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123207244] [2021-11-20 23:17:26,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:26,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:17:26,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:26,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:17:26,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-11-20 23:17:26,888 INFO L87 Difference]: Start difference. First operand 58897 states and 82746 transitions. Second operand has 16 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 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) [2021-11-20 23:17:29,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:29,347 INFO L93 Difference]: Finished difference Result 207476 states and 294184 transitions. [2021-11-20 23:17:29,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:17:29,348 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 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 [2021-11-20 23:17:29,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:29,882 INFO L225 Difference]: With dead ends: 207476 [2021-11-20 23:17:29,882 INFO L226 Difference]: Without dead ends: 207475 [2021-11-20 23:17:29,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-11-20 23:17:29,967 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 674 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:29,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 301 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:17:30,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207475 states. [2021-11-20 23:17:33,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207475 to 115067. [2021-11-20 23:17:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115067 states, 115061 states have (on average 1.3967895290324264) internal successors, (160716), 115066 states have internal predecessors, (160716), 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) [2021-11-20 23:17:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115067 states to 115067 states and 160716 transitions. [2021-11-20 23:17:33,352 INFO L78 Accepts]: Start accepts. Automaton has 115067 states and 160716 transitions. Word has length 57 [2021-11-20 23:17:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:33,352 INFO L470 AbstractCegarLoop]: Abstraction has 115067 states and 160716 transitions. [2021-11-20 23:17:33,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 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) [2021-11-20 23:17:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 115067 states and 160716 transitions. [2021-11-20 23:17:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-20 23:17:33,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:33,362 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1] [2021-11-20 23:17:33,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:33,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 23:17:33,587 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:33,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1605996634, now seen corresponding path program 2 times [2021-11-20 23:17:33,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:33,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287731858] [2021-11-20 23:17:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:33,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:33,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:33,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287731858] [2021-11-20 23:17:33,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287731858] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:33,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036547196] [2021-11-20 23:17:33,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:17:33,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:33,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:33,662 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:33,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 23:17:33,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-20 23:17:33,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:17:33,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:17:33,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:33,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:17:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:34,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036547196] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:17:34,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [597087668] [2021-11-20 23:17:34,069 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-20 23:17:34,069 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:17:34,069 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:17:34,069 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:17:34,069 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:17:34,951 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:17:35,361 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:17:35,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:17:35,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2021-11-20 23:17:35,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540793771] [2021-11-20 23:17:35,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:17:35,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:17:35,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:35,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:17:35,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2021-11-20 23:17:35,363 INFO L87 Difference]: Start difference. First operand 115067 states and 160716 transitions. Second operand has 16 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 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) [2021-11-20 23:17:39,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:39,701 INFO L93 Difference]: Finished difference Result 405128 states and 571168 transitions. [2021-11-20 23:17:39,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:17:39,702 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 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 71 [2021-11-20 23:17:39,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:40,453 INFO L225 Difference]: With dead ends: 405128 [2021-11-20 23:17:40,454 INFO L226 Difference]: Without dead ends: 405127 [2021-11-20 23:17:40,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 181 SyntacticMatches, 14 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2021-11-20 23:17:40,562 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 320 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:40,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 301 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:17:40,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405127 states. [2021-11-20 23:17:47,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405127 to 224757. [2021-11-20 23:17:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224757 states, 224751 states have (on average 1.3887635650119465) internal successors, (312126), 224756 states have internal predecessors, (312126), 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) [2021-11-20 23:17:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224757 states to 224757 states and 312126 transitions. [2021-11-20 23:17:47,711 INFO L78 Accepts]: Start accepts. Automaton has 224757 states and 312126 transitions. Word has length 71 [2021-11-20 23:17:47,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:47,711 INFO L470 AbstractCegarLoop]: Abstraction has 224757 states and 312126 transitions. [2021-11-20 23:17:47,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 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) [2021-11-20 23:17:47,712 INFO L276 IsEmpty]: Start isEmpty. Operand 224757 states and 312126 transitions. [2021-11-20 23:17:47,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 23:17:47,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:47,722 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 1, 1] [2021-11-20 23:17:47,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 23:17:47,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 23:17:47,935 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-20 23:17:47,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:47,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1165827000, now seen corresponding path program 3 times [2021-11-20 23:17:47,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:47,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257474449] [2021-11-20 23:17:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:47,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:48,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:48,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257474449] [2021-11-20 23:17:48,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257474449] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:17:48,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776400480] [2021-11-20 23:17:48,095 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:17:48,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:48,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:17:48,096 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:17:48,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 23:17:48,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:17:48,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:17:48,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 23:17:48,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:17:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:48,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:17:48,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776400480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:48,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:17:48,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 23 [2021-11-20 23:17:48,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358609286] [2021-11-20 23:17:48,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:48,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:17:48,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:48,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:17:48,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-20 23:17:48,612 INFO L87 Difference]: Start difference. First operand 224757 states and 312126 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 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) [2021-11-20 23:17:50,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:50,875 INFO L93 Difference]: Finished difference Result 243071 states and 336740 transitions. [2021-11-20 23:17:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 23:17:50,876 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 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) Word has length 77 [2021-11-20 23:17:50,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:50,876 INFO L225 Difference]: With dead ends: 243071 [2021-11-20 23:17:50,876 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 23:17:51,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-20 23:17:51,012 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 144 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:51,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 468 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:17:51,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 23:17:51,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 23:17:51,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 23:17:51,014 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2021-11-20 23:17:51,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:51,014 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 23:17:51,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 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) [2021-11-20 23:17:51,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 23:17:51,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 23:17:51,017 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2021-11-20 23:17:51,018 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2021-11-20 23:17:51,019 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2021-11-20 23:17:51,019 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2021-11-20 23:17:51,019 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2021-11-20 23:17:51,019 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2021-11-20 23:17:51,019 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2021-11-20 23:17:51,020 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2021-11-20 23:17:51,022 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2021-11-20 23:17:51,022 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2021-11-20 23:17:51,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-20 23:17:51,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cdc95d-ca15-4d4a-81e7-5fa72038c35d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:17:51,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.