./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark03_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark03_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36118893e72f01ac34f08ae30ac9eb83d0074096398f7228653cb15beb7a3f4b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:49:44,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:49:44,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:49:44,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:49:44,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:49:44,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:49:44,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:49:44,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:49:44,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:49:44,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:49:44,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:49:44,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:49:44,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:49:44,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:49:44,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:49:44,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:49:44,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:49:44,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:49:44,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:49:44,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:49:44,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:49:44,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:49:44,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:49:44,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:49:44,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:49:44,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:49:44,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:49:44,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:49:44,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:49:44,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:49:44,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:49:44,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:49:44,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:49:44,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:49:44,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:49:44,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:49:44,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:49:44,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:49:44,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:49:44,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:49:44,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:49:44,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 07:49:44,534 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:49:44,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:49:44,535 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:49:44,535 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:49:44,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:49:44,536 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:49:44,536 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:49:44,537 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:49:44,537 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:49:44,537 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:49:44,538 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:49:44,538 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:49:44,538 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:49:44,538 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:49:44,539 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:49:44,539 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:49:44,539 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:49:44,539 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:49:44,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:49:44,540 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:49:44,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:49:44,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:49:44,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:49:44,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:49:44,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:49:44,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:49:44,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:49:44,543 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 07:49:44,543 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:49:44,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:49:44,543 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:49:44,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:49:44,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:49:44,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:49:44,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:49:44,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:49:44,544 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:49:44,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:49:44,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:49:44,545 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:49:44,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:49:44,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:49:44,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:49:44,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36118893e72f01ac34f08ae30ac9eb83d0074096398f7228653cb15beb7a3f4b [2022-11-19 07:49:44,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:49:44,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:49:44,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:49:44,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:49:44,890 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:49:44,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/loop-zilu/benchmark03_linear.i [2022-11-19 07:49:44,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/data/5f688c98c/56dd75d3b6c04247abd1863eb8613b5c/FLAG86ec1b4e8 [2022-11-19 07:49:45,394 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:49:45,395 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/sv-benchmarks/c/loop-zilu/benchmark03_linear.i [2022-11-19 07:49:45,428 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/data/5f688c98c/56dd75d3b6c04247abd1863eb8613b5c/FLAG86ec1b4e8 [2022-11-19 07:49:45,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/data/5f688c98c/56dd75d3b6c04247abd1863eb8613b5c [2022-11-19 07:49:45,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:49:45,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:49:45,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:49:45,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:49:45,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:49:45,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:45" (1/1) ... [2022-11-19 07:49:45,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5e55c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:45, skipping insertion in model container [2022-11-19 07:49:45,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:45" (1/1) ... [2022-11-19 07:49:45,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:49:45,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:49:46,044 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/sv-benchmarks/c/loop-zilu/benchmark03_linear.i[868,881] [2022-11-19 07:49:46,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:49:46,071 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:49:46,089 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/sv-benchmarks/c/loop-zilu/benchmark03_linear.i[868,881] [2022-11-19 07:49:46,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:49:46,121 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:49:46,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:46 WrapperNode [2022-11-19 07:49:46,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:49:46,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:49:46,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:49:46,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:49:46,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:46" (1/1) ... [2022-11-19 07:49:46,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:46" (1/1) ... [2022-11-19 07:49:46,160 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2022-11-19 07:49:46,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:49:46,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:49:46,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:49:46,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:49:46,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:46" (1/1) ... [2022-11-19 07:49:46,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:46" (1/1) ... [2022-11-19 07:49:46,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:46" (1/1) ... [2022-11-19 07:49:46,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:46" (1/1) ... [2022-11-19 07:49:46,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:46" (1/1) ... [2022-11-19 07:49:46,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:46" (1/1) ... [2022-11-19 07:49:46,189 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:46" (1/1) ... [2022-11-19 07:49:46,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:46" (1/1) ... [2022-11-19 07:49:46,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:49:46,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:49:46,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:49:46,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:49:46,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:46" (1/1) ... [2022-11-19 07:49:46,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:49:46,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:46,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:49:46,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:49:46,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:49:46,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:49:46,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:49:46,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:49:46,354 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:49:46,356 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:49:46,527 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:49:46,553 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:49:46,554 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:49:46,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:46 BoogieIcfgContainer [2022-11-19 07:49:46,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:49:46,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:49:46,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:49:46,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:49:46,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:45" (1/3) ... [2022-11-19 07:49:46,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adac34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:46, skipping insertion in model container [2022-11-19 07:49:46,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:46" (2/3) ... [2022-11-19 07:49:46,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adac34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:46, skipping insertion in model container [2022-11-19 07:49:46,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:46" (3/3) ... [2022-11-19 07:49:46,564 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark03_linear.i [2022-11-19 07:49:46,581 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:49:46,581 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-19 07:49:46,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:49:46,634 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ef16c90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:49:46,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-19 07:49:46,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 25 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) [2022-11-19 07:49:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:49:46,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:46,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:49:46,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:46,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:46,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2628848, now seen corresponding path program 1 times [2022-11-19 07:49:46,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:46,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868887075] [2022-11-19 07:49:46,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:46,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:46,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:46,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868887075] [2022-11-19 07:49:46,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868887075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:46,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:46,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:49:46,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785809741] [2022-11-19 07:49:46,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:46,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:49:46,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:46,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:49:46,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:49:46,932 INFO L87 Difference]: Start difference. First operand has 26 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 25 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-11-19 07:49:46,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:46,998 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-11-19 07:49:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:49:47,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 [2022-11-19 07:49:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:47,009 INFO L225 Difference]: With dead ends: 33 [2022-11-19 07:49:47,009 INFO L226 Difference]: Without dead ends: 27 [2022-11-19 07:49:47,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:49:47,016 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:47,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:49:47,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-19 07:49:47,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-19 07:49:47,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 26 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) [2022-11-19 07:49:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-11-19 07:49:47,050 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 4 [2022-11-19 07:49:47,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:47,050 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-11-19 07:49:47,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-11-19 07:49:47,051 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-11-19 07:49:47,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:49:47,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:47,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:49:47,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:49:47,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:47,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:47,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1768642766, now seen corresponding path program 1 times [2022-11-19 07:49:47,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:47,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138293718] [2022-11-19 07:49:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:47,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:47,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:47,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138293718] [2022-11-19 07:49:47,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138293718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:47,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:47,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:49:47,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962764297] [2022-11-19 07:49:47,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:47,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:49:47,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:47,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:49:47,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:49:47,157 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:47,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:47,214 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-11-19 07:49:47,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:49:47,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 07:49:47,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:47,216 INFO L225 Difference]: With dead ends: 31 [2022-11-19 07:49:47,216 INFO L226 Difference]: Without dead ends: 29 [2022-11-19 07:49:47,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:49:47,218 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:47,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 57 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:49:47,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-19 07:49:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-19 07:49:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-11-19 07:49:47,224 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 6 [2022-11-19 07:49:47,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:47,225 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-11-19 07:49:47,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:47,225 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-11-19 07:49:47,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:49:47,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:47,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:47,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:49:47,226 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:47,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:47,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1141352820, now seen corresponding path program 1 times [2022-11-19 07:49:47,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:47,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784485929] [2022-11-19 07:49:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:47,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:47,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:47,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784485929] [2022-11-19 07:49:47,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784485929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:47,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:47,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:49:47,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521222817] [2022-11-19 07:49:47,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:47,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:49:47,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:47,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:49:47,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:49:47,408 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2022-11-19 07:49:47,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:47,490 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-11-19 07:49:47,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:49:47,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 [2022-11-19 07:49:47,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:47,491 INFO L225 Difference]: With dead ends: 32 [2022-11-19 07:49:47,491 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 07:49:47,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:49:47,493 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:47,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 66 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:49:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 07:49:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-11-19 07:49:47,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.55) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-11-19 07:49:47,498 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 8 [2022-11-19 07:49:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:47,499 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-11-19 07:49:47,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2022-11-19 07:49:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-11-19 07:49:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:49:47,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:47,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:47,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:49:47,500 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:47,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:47,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1022199110, now seen corresponding path program 1 times [2022-11-19 07:49:47,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:47,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775603870] [2022-11-19 07:49:47,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:47,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:47,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:47,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775603870] [2022-11-19 07:49:47,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775603870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:47,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:47,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:49:47,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301902619] [2022-11-19 07:49:47,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:47,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:49:47,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:47,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:49:47,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:49:47,689 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2022-11-19 07:49:47,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:47,765 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-11-19 07:49:47,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:49:47,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 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 [2022-11-19 07:49:47,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:47,766 INFO L225 Difference]: With dead ends: 32 [2022-11-19 07:49:47,766 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 07:49:47,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:49:47,768 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:47,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 83 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:49:47,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 07:49:47,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-19 07:49:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 30 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) [2022-11-19 07:49:47,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-11-19 07:49:47,774 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 9 [2022-11-19 07:49:47,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:47,774 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-11-19 07:49:47,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2022-11-19 07:49:47,775 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-11-19 07:49:47,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:49:47,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:47,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:47,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:49:47,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:47,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:47,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1623401398, now seen corresponding path program 1 times [2022-11-19 07:49:47,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:47,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075826103] [2022-11-19 07:49:47,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:47,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:47,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:47,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075826103] [2022-11-19 07:49:47,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075826103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:47,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:47,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:49:47,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343595164] [2022-11-19 07:49:47,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:47,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:49:47,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:47,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:49:47,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:49:47,937 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-11-19 07:49:48,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:48,006 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-11-19 07:49:48,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:49:48,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2022-11-19 07:49:48,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:48,010 INFO L225 Difference]: With dead ends: 34 [2022-11-19 07:49:48,011 INFO L226 Difference]: Without dead ends: 33 [2022-11-19 07:49:48,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:49:48,014 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:48,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 58 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:49:48,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-19 07:49:48,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-11-19 07:49:48,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.5) internal successors, (33), 31 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) [2022-11-19 07:49:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-11-19 07:49:48,025 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 10 [2022-11-19 07:49:48,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:48,025 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-11-19 07:49:48,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-11-19 07:49:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-11-19 07:49:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:49:48,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:48,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:48,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:49:48,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:48,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:48,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1214164152, now seen corresponding path program 1 times [2022-11-19 07:49:48,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:48,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591389241] [2022-11-19 07:49:48,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:48,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:48,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:48,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591389241] [2022-11-19 07:49:48,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591389241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:48,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:48,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:49:48,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33905262] [2022-11-19 07:49:48,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:48,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:49:48,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:48,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:49:48,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:49:48,106 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:48,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:48,155 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2022-11-19 07:49:48,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:49:48,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-11-19 07:49:48,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:48,157 INFO L225 Difference]: With dead ends: 34 [2022-11-19 07:49:48,157 INFO L226 Difference]: Without dead ends: 33 [2022-11-19 07:49:48,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:49:48,160 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:48,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 58 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:49:48,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-19 07:49:48,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-19 07:49:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 32 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) [2022-11-19 07:49:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-11-19 07:49:48,165 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 11 [2022-11-19 07:49:48,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:48,165 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-11-19 07:49:48,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:48,166 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-11-19 07:49:48,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:49:48,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:48,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:48,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:49:48,167 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:48,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:48,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1419356522, now seen corresponding path program 1 times [2022-11-19 07:49:48,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:48,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190185143] [2022-11-19 07:49:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:48,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:48,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:48,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190185143] [2022-11-19 07:49:48,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190185143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:48,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:48,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:49:48,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140830628] [2022-11-19 07:49:48,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:48,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:49:48,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:48,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:49:48,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:49:48,255 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:48,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:48,345 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2022-11-19 07:49:48,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:49:48,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 07:49:48,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:48,348 INFO L225 Difference]: With dead ends: 54 [2022-11-19 07:49:48,349 INFO L226 Difference]: Without dead ends: 53 [2022-11-19 07:49:48,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:49:48,352 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 36 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:48,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 66 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:49:48,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-19 07:49:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 35. [2022-11-19 07:49:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.48) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:48,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-11-19 07:49:48,370 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2022-11-19 07:49:48,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:48,371 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-11-19 07:49:48,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:48,371 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-11-19 07:49:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:49:48,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:48,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:48,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:49:48,373 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:48,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1050379291, now seen corresponding path program 1 times [2022-11-19 07:49:48,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:48,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458388950] [2022-11-19 07:49:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:48,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:48,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:48,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458388950] [2022-11-19 07:49:48,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458388950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:48,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:48,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:49:48,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8586308] [2022-11-19 07:49:48,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:48,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:49:48,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:48,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:49:48,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:49:48,521 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2022-11-19 07:49:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:48,608 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2022-11-19 07:49:48,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:49:48,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 14 [2022-11-19 07:49:48,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:48,612 INFO L225 Difference]: With dead ends: 54 [2022-11-19 07:49:48,612 INFO L226 Difference]: Without dead ends: 53 [2022-11-19 07:49:48,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:49:48,614 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:48,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 95 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:49:48,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-19 07:49:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 36. [2022-11-19 07:49:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2022-11-19 07:49:48,618 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 14 [2022-11-19 07:49:48,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:48,619 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2022-11-19 07:49:48,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2022-11-19 07:49:48,619 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2022-11-19 07:49:48,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:49:48,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:48,620 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:48,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:49:48,621 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:48,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:48,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1050384385, now seen corresponding path program 1 times [2022-11-19 07:49:48,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:48,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37867732] [2022-11-19 07:49:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:48,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:48,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:48,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:48,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37867732] [2022-11-19 07:49:48,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37867732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:49:48,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827861379] [2022-11-19 07:49:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:48,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:48,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:48,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:48,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:49:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:48,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:49:48,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:48,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:49:48,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:48,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827861379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:49:48,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [713550414] [2022-11-19 07:49:48,947 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 07:49:48,947 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:49:48,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:49:48,956 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:49:48,957 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:49:49,548 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:49:50,344 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '778#(and (= |ULTIMATE.start_main_#t~post7#1| |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (not (<= |ULTIMATE.start_main_#t~post7#1| 2147483646)) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:49:50,344 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:49:50,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:49:50,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-11-19 07:49:50,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496410892] [2022-11-19 07:49:50,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:49:50,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:49:50,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:50,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:49:50,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:49:50,346 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 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) [2022-11-19 07:49:50,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:50,487 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2022-11-19 07:49:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:49:50,488 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 07:49:50,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:50,488 INFO L225 Difference]: With dead ends: 83 [2022-11-19 07:49:50,488 INFO L226 Difference]: Without dead ends: 82 [2022-11-19 07:49:50,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2022-11-19 07:49:50,490 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 62 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:50,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 115 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:49:50,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-19 07:49:50,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 62. [2022-11-19 07:49:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 1.6153846153846154) internal successors, (84), 61 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 84 transitions. [2022-11-19 07:49:50,495 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 84 transitions. Word has length 14 [2022-11-19 07:49:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:50,495 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 84 transitions. [2022-11-19 07:49:50,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 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) [2022-11-19 07:49:50,496 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 84 transitions. [2022-11-19 07:49:50,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:49:50,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:50,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:50,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:49:50,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:50,703 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:50,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:50,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1797822383, now seen corresponding path program 1 times [2022-11-19 07:49:50,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:50,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688928501] [2022-11-19 07:49:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:50,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:50,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:50,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688928501] [2022-11-19 07:49:50,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688928501] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:49:50,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588938652] [2022-11-19 07:49:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:50,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:50,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:50,762 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:50,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:49:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:50,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:49:50,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:50,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:49:50,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588938652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:50,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:49:50,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-19 07:49:50,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992749820] [2022-11-19 07:49:50,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:50,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:49:50,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:50,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:49:50,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:49:50,856 INFO L87 Difference]: Start difference. First operand 62 states and 84 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:50,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:50,890 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2022-11-19 07:49:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:49:50,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-19 07:49:50,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:50,892 INFO L225 Difference]: With dead ends: 62 [2022-11-19 07:49:50,892 INFO L226 Difference]: Without dead ends: 61 [2022-11-19 07:49:50,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:49:50,894 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 37 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:50,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 31 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:49:50,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-19 07:49:50,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-19 07:49:50,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 60 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2022-11-19 07:49:50,908 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 15 [2022-11-19 07:49:50,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:50,908 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2022-11-19 07:49:50,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:50,909 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2022-11-19 07:49:50,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:49:50,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:50,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:50,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:49:51,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:51,116 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:51,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:51,116 INFO L85 PathProgramCache]: Analyzing trace with hash 102081027, now seen corresponding path program 1 times [2022-11-19 07:49:51,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:51,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751512220] [2022-11-19 07:49:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:51,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:51,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:51,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751512220] [2022-11-19 07:49:51,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751512220] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:49:51,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753719409] [2022-11-19 07:49:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:51,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:51,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:51,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:51,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:49:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:51,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:49:51,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:51,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:49:51,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:51,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753719409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:49:51,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [603473636] [2022-11-19 07:49:51,352 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 07:49:51,353 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:49:51,353 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:49:51,353 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:49:51,354 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:49:51,622 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:49:52,113 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1248#(and (not (<= |ULTIMATE.start_main_#t~post8#1| 2147483646)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~post8#1| |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:49:52,113 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:49:52,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:49:52,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-11-19 07:49:52,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342398747] [2022-11-19 07:49:52,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:49:52,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:49:52,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:52,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:49:52,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:49:52,115 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:52,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:52,257 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2022-11-19 07:49:52,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:49:52,258 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-19 07:49:52,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:52,259 INFO L225 Difference]: With dead ends: 80 [2022-11-19 07:49:52,259 INFO L226 Difference]: Without dead ends: 79 [2022-11-19 07:49:52,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2022-11-19 07:49:52,260 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 59 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:52,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 110 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:49:52,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-19 07:49:52,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2022-11-19 07:49:52,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.5) internal successors, (81), 62 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:52,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2022-11-19 07:49:52,265 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 16 [2022-11-19 07:49:52,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:52,266 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2022-11-19 07:49:52,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:52,266 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2022-11-19 07:49:52,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:49:52,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:52,267 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:52,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:49:52,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-19 07:49:52,468 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:52,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:52,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1130455405, now seen corresponding path program 1 times [2022-11-19 07:49:52,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:52,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637985793] [2022-11-19 07:49:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:52,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:52,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:52,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637985793] [2022-11-19 07:49:52,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637985793] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:49:52,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734815852] [2022-11-19 07:49:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:52,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:52,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:52,532 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:52,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:49:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:52,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:49:52,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:52,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:52,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:49:52,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734815852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:52,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:49:52,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-19 07:49:52,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335410168] [2022-11-19 07:49:52,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:52,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:49:52,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:52,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:49:52,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:49:52,638 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:52,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:52,684 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2022-11-19 07:49:52,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:49:52,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-19 07:49:52,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:52,687 INFO L225 Difference]: With dead ends: 63 [2022-11-19 07:49:52,687 INFO L226 Difference]: Without dead ends: 62 [2022-11-19 07:49:52,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:49:52,688 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:52,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 51 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:49:52,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-19 07:49:52,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-19 07:49:52,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 61 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:52,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2022-11-19 07:49:52,694 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 17 [2022-11-19 07:49:52,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:52,695 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2022-11-19 07:49:52,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:52,696 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2022-11-19 07:49:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:49:52,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:52,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:52,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:49:52,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-19 07:49:52,908 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:52,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:52,908 INFO L85 PathProgramCache]: Analyzing trace with hash -684379131, now seen corresponding path program 1 times [2022-11-19 07:49:52,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:52,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932554649] [2022-11-19 07:49:52,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:52,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:53,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:53,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:53,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932554649] [2022-11-19 07:49:53,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932554649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:49:53,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561519741] [2022-11-19 07:49:53,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:53,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:53,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:53,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:53,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:49:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:53,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:49:53,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:53,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:49:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:53,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561519741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:49:53,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1093412249] [2022-11-19 07:49:53,338 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 07:49:53,338 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:49:53,338 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:49:53,338 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:49:53,338 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:49:53,574 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:49:54,091 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1747#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (<= (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~x~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:49:54,091 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:49:54,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:49:54,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-19 07:49:54,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353973719] [2022-11-19 07:49:54,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:49:54,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-19 07:49:54,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:54,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-19 07:49:54,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 07:49:54,093 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:54,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:54,366 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2022-11-19 07:49:54,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-19 07:49:54,367 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 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 [2022-11-19 07:49:54,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:54,367 INFO L225 Difference]: With dead ends: 75 [2022-11-19 07:49:54,367 INFO L226 Difference]: Without dead ends: 74 [2022-11-19 07:49:54,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=310, Invalid=1670, Unknown=0, NotChecked=0, Total=1980 [2022-11-19 07:49:54,370 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 97 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:54,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 192 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:49:54,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-19 07:49:54,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2022-11-19 07:49:54,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 63 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:54,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2022-11-19 07:49:54,374 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 18 [2022-11-19 07:49:54,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:54,374 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2022-11-19 07:49:54,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:54,375 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2022-11-19 07:49:54,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:49:54,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:54,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:54,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-19 07:49:54,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:54,580 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:54,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:54,581 INFO L85 PathProgramCache]: Analyzing trace with hash 259083477, now seen corresponding path program 1 times [2022-11-19 07:49:54,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:54,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708739691] [2022-11-19 07:49:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:54,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:54,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:54,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708739691] [2022-11-19 07:49:54,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708739691] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:49:54,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429866726] [2022-11-19 07:49:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:54,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:54,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:54,682 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:54,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:49:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:54,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:49:54,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:54,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:49:54,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429866726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:54,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:49:54,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 14 [2022-11-19 07:49:54,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142854916] [2022-11-19 07:49:54,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:54,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:49:54,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:49:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:49:54,878 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:54,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:54,969 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2022-11-19 07:49:54,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:49:54,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 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 [2022-11-19 07:49:54,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:54,970 INFO L225 Difference]: With dead ends: 64 [2022-11-19 07:49:54,970 INFO L226 Difference]: Without dead ends: 63 [2022-11-19 07:49:54,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:49:54,971 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 66 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:54,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 77 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:49:54,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-19 07:49:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-19 07:49:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 62 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:54,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2022-11-19 07:49:54,975 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 19 [2022-11-19 07:49:54,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:54,975 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2022-11-19 07:49:54,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:54,976 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2022-11-19 07:49:54,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:49:54,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:54,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:54,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:49:55,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 07:49:55,182 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:55,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:55,182 INFO L85 PathProgramCache]: Analyzing trace with hash -558346745, now seen corresponding path program 1 times [2022-11-19 07:49:55,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:55,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927384534] [2022-11-19 07:49:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:55,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:55,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:55,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927384534] [2022-11-19 07:49:55,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927384534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:49:55,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595165262] [2022-11-19 07:49:55,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:55,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:55,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:55,273 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:55,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:49:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:55,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:49:55,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:55,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:49:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:55,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595165262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:49:55,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1869756985] [2022-11-19 07:49:55,573 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 07:49:55,573 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:49:55,573 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:49:55,573 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:49:55,574 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:49:55,812 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:49:56,308 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2280#(and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:49:56,308 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:49:56,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:49:56,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-19 07:49:56,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407216857] [2022-11-19 07:49:56,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:49:56,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-19 07:49:56,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:56,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-19 07:49:56,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 07:49:56,310 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 22 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:56,722 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2022-11-19 07:49:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 07:49:56,722 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 22 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-19 07:49:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:56,723 INFO L225 Difference]: With dead ends: 120 [2022-11-19 07:49:56,723 INFO L226 Difference]: Without dead ends: 119 [2022-11-19 07:49:56,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=414, Invalid=2136, Unknown=0, NotChecked=0, Total=2550 [2022-11-19 07:49:56,725 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 210 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:56,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 101 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:49:56,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-19 07:49:56,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2022-11-19 07:49:56,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.2391304347826086) internal successors, (114), 98 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) [2022-11-19 07:49:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2022-11-19 07:49:56,740 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 20 [2022-11-19 07:49:56,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:56,742 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2022-11-19 07:49:56,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 22 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2022-11-19 07:49:56,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:49:56,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:56,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-19 07:49:56,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:49:56,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-19 07:49:56,945 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:56,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:56,946 INFO L85 PathProgramCache]: Analyzing trace with hash -128879849, now seen corresponding path program 1 times [2022-11-19 07:49:56,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:56,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419544853] [2022-11-19 07:49:56,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:56,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:57,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:57,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419544853] [2022-11-19 07:49:57,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419544853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:49:57,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551428787] [2022-11-19 07:49:57,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:57,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:57,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:57,082 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:57,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:49:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:57,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:49:57,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:57,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:49:57,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551428787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:57,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:49:57,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 14 [2022-11-19 07:49:57,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510643043] [2022-11-19 07:49:57,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:57,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:49:57,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:57,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:49:57,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:49:57,300 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:57,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:57,407 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2022-11-19 07:49:57,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:49:57,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-11-19 07:49:57,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:57,409 INFO L225 Difference]: With dead ends: 99 [2022-11-19 07:49:57,409 INFO L226 Difference]: Without dead ends: 97 [2022-11-19 07:49:57,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:49:57,410 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 40 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:57,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 50 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:49:57,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-19 07:49:57,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-11-19 07:49:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 96 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:57,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2022-11-19 07:49:57,415 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 21 [2022-11-19 07:49:57,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:57,416 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2022-11-19 07:49:57,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:57,416 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2022-11-19 07:49:57,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 07:49:57,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:57,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-19 07:49:57,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-19 07:49:57,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:57,618 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:57,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:57,618 INFO L85 PathProgramCache]: Analyzing trace with hash 700518777, now seen corresponding path program 1 times [2022-11-19 07:49:57,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:57,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089924188] [2022-11-19 07:49:57,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:57,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:57,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:57,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:57,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089924188] [2022-11-19 07:49:57,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089924188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:57,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:57,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:49:57,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808295822] [2022-11-19 07:49:57,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:57,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:49:57,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:57,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:49:57,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:57,646 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:57,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:57,656 INFO L93 Difference]: Finished difference Result 156 states and 172 transitions. [2022-11-19 07:49:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:49:57,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-19 07:49:57,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:57,657 INFO L225 Difference]: With dead ends: 156 [2022-11-19 07:49:57,658 INFO L226 Difference]: Without dead ends: 119 [2022-11-19 07:49:57,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:57,659 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:57,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 46 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:49:57,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-19 07:49:57,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2022-11-19 07:49:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.1454545454545455) internal successors, (126), 114 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2022-11-19 07:49:57,666 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 23 [2022-11-19 07:49:57,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:57,667 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2022-11-19 07:49:57,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:57,667 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2022-11-19 07:49:57,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 07:49:57,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:57,668 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-19 07:49:57,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-19 07:49:57,668 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:57,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:57,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1259603491, now seen corresponding path program 1 times [2022-11-19 07:49:57,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:57,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680629806] [2022-11-19 07:49:57,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:57,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:57,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:57,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680629806] [2022-11-19 07:49:57,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680629806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:49:57,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887267856] [2022-11-19 07:49:57,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:57,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:57,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:57,788 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:57,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 07:49:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:57,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 07:49:57,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:58,010 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:58,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:49:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:49:58,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887267856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:49:58,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1860619006] [2022-11-19 07:49:58,173 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:49:58,173 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:49:58,174 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:49:58,174 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:49:58,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:49:58,440 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:49:59,133 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3332#(and (< 2147483646 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= |#NULL.offset| 0) (not (= (mod |ULTIMATE.start_main_~flag~0#1| 256) 0)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:49:59,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:49:59,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:49:59,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2022-11-19 07:49:59,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845498113] [2022-11-19 07:49:59,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:49:59,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-19 07:49:59,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:59,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-19 07:49:59,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1484, Unknown=0, NotChecked=0, Total=1722 [2022-11-19 07:49:59,136 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 28 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:59,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:59,573 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2022-11-19 07:49:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 07:49:59,580 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-19 07:49:59,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:59,580 INFO L225 Difference]: With dead ends: 140 [2022-11-19 07:49:59,581 INFO L226 Difference]: Without dead ends: 138 [2022-11-19 07:49:59,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=499, Invalid=2471, Unknown=0, NotChecked=0, Total=2970 [2022-11-19 07:49:59,583 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 218 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:59,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 157 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:49:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-19 07:49:59,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2022-11-19 07:49:59,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.13) internal successors, (113), 104 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2022-11-19 07:49:59,590 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 25 [2022-11-19 07:49:59,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:59,590 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2022-11-19 07:49:59,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:59,590 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2022-11-19 07:49:59,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:49:59,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:59,592 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2022-11-19 07:49:59,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:49:59,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-19 07:49:59,796 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:59,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:59,797 INFO L85 PathProgramCache]: Analyzing trace with hash -781049119, now seen corresponding path program 1 times [2022-11-19 07:49:59,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:59,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800833144] [2022-11-19 07:49:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:59,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:49:59,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:59,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800833144] [2022-11-19 07:49:59,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800833144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:59,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:59,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:49:59,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553339653] [2022-11-19 07:49:59,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:59,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:49:59,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:59,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:49:59,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:59,837 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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) [2022-11-19 07:49:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:59,847 INFO L93 Difference]: Finished difference Result 141 states and 145 transitions. [2022-11-19 07:49:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:49:59,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-19 07:49:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:59,849 INFO L225 Difference]: With dead ends: 141 [2022-11-19 07:49:59,849 INFO L226 Difference]: Without dead ends: 103 [2022-11-19 07:49:59,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:59,850 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:59,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:49:59,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-19 07:49:59,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2022-11-19 07:49:59,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.1063829787234043) internal successors, (104), 98 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:49:59,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2022-11-19 07:49:59,857 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 44 [2022-11-19 07:49:59,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:59,857 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2022-11-19 07:49:59,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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) [2022-11-19 07:49:59,857 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2022-11-19 07:49:59,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:49:59,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:59,858 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2022-11-19 07:49:59,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-19 07:49:59,859 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:49:59,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:59,859 INFO L85 PathProgramCache]: Analyzing trace with hash -665779788, now seen corresponding path program 2 times [2022-11-19 07:49:59,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:59,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109271654] [2022-11-19 07:49:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:59,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:00,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:50:00,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109271654] [2022-11-19 07:50:00,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109271654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:50:00,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131728272] [2022-11-19 07:50:00,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:50:00,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:00,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:50:00,009 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:50:00,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 07:50:00,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:50:00,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:50:00,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:50:00,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:50:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:00,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:50:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:00,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131728272] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:50:00,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [337722564] [2022-11-19 07:50:00,733 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 07:50:00,733 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:50:00,734 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:50:00,734 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:50:00,734 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:50:00,938 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:50:01,563 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4201#(and (= |ULTIMATE.start_main_#t~post7#1| |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (not (<= |ULTIMATE.start_main_#t~post7#1| 2147483646)) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:50:01,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:50:01,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:50:01,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 36 [2022-11-19 07:50:01,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665747677] [2022-11-19 07:50:01,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:50:01,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-19 07:50:01,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:50:01,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-19 07:50:01,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=2050, Unknown=0, NotChecked=0, Total=2450 [2022-11-19 07:50:01,567 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand has 38 states, 37 states have (on average 3.5675675675675675) internal successors, (132), 37 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:02,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:50:02,336 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2022-11-19 07:50:02,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-19 07:50:02,337 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 3.5675675675675675) internal successors, (132), 37 states have internal predecessors, (132), 0 states have call successors, (0), 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 44 [2022-11-19 07:50:02,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:50:02,337 INFO L225 Difference]: With dead ends: 123 [2022-11-19 07:50:02,338 INFO L226 Difference]: Without dead ends: 122 [2022-11-19 07:50:02,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=991, Invalid=3979, Unknown=0, NotChecked=0, Total=4970 [2022-11-19 07:50:02,340 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 610 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:50:02,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 281 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:50:02,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-19 07:50:02,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 98. [2022-11-19 07:50:02,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.0851063829787233) internal successors, (102), 97 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:02,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2022-11-19 07:50:02,346 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 44 [2022-11-19 07:50:02,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:50:02,347 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2022-11-19 07:50:02,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 3.5675675675675675) internal successors, (132), 37 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:02,347 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2022-11-19 07:50:02,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-19 07:50:02,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:50:02,348 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1] [2022-11-19 07:50:02,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:50:02,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:02,553 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:50:02,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:50:02,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2039539325, now seen corresponding path program 1 times [2022-11-19 07:50:02,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:50:02,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527953871] [2022-11-19 07:50:02,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:02,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:50:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:02,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:50:02,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527953871] [2022-11-19 07:50:02,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527953871] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:50:02,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485200401] [2022-11-19 07:50:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:02,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:02,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:50:02,837 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:50:02,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 07:50:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:02,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 07:50:02,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:50:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:03,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:50:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:03,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485200401] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:50:03,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [999016518] [2022-11-19 07:50:03,710 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:50:03,710 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:50:03,711 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:50:03,711 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:50:03,711 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:50:03,928 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:50:04,671 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4816#(and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:50:04,671 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:50:04,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:50:04,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-11-19 07:50:04,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269964539] [2022-11-19 07:50:04,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:50:04,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-19 07:50:04,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:50:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-19 07:50:04,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=3507, Unknown=0, NotChecked=0, Total=4032 [2022-11-19 07:50:04,674 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand has 50 states, 49 states have (on average 2.816326530612245) internal successors, (138), 49 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:06,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:50:06,019 INFO L93 Difference]: Finished difference Result 191 states and 205 transitions. [2022-11-19 07:50:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-19 07:50:06,020 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.816326530612245) internal successors, (138), 49 states have internal predecessors, (138), 0 states have call successors, (0), 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 46 [2022-11-19 07:50:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:50:06,021 INFO L225 Difference]: With dead ends: 191 [2022-11-19 07:50:06,021 INFO L226 Difference]: Without dead ends: 190 [2022-11-19 07:50:06,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3682 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1549, Invalid=7763, Unknown=0, NotChecked=0, Total=9312 [2022-11-19 07:50:06,024 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 557 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:50:06,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 206 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:50:06,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-19 07:50:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 176. [2022-11-19 07:50:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 172 states have (on average 1.1453488372093024) internal successors, (197), 175 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 197 transitions. [2022-11-19 07:50:06,034 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 197 transitions. Word has length 46 [2022-11-19 07:50:06,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:50:06,035 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 197 transitions. [2022-11-19 07:50:06,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.816326530612245) internal successors, (138), 49 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:06,035 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 197 transitions. [2022-11-19 07:50:06,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-19 07:50:06,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:50:06,036 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2022-11-19 07:50:06,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:50:06,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:06,239 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:50:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:50:06,239 INFO L85 PathProgramCache]: Analyzing trace with hash 135752438, now seen corresponding path program 2 times [2022-11-19 07:50:06,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:50:06,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299313750] [2022-11-19 07:50:06,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:06,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:50:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:06,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:50:06,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299313750] [2022-11-19 07:50:06,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299313750] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:50:06,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639778554] [2022-11-19 07:50:06,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:50:06,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:06,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:50:06,408 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:50:06,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-19 07:50:06,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:50:06,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:50:06,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:50:06,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:50:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:06,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:50:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:07,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639778554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:50:07,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1622547416] [2022-11-19 07:50:07,177 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 07:50:07,177 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:50:07,178 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:50:07,178 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:50:07,178 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:50:07,339 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:50:07,982 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5603#(and (not (<= |ULTIMATE.start_main_#t~post8#1| 2147483646)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~post8#1| |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:50:07,982 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:50:07,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:50:07,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 36 [2022-11-19 07:50:07,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160392914] [2022-11-19 07:50:07,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:50:07,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-19 07:50:07,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:50:07,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-19 07:50:07,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=2062, Unknown=0, NotChecked=0, Total=2450 [2022-11-19 07:50:07,985 INFO L87 Difference]: Start difference. First operand 176 states and 197 transitions. Second operand has 38 states, 37 states have (on average 3.72972972972973) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:08,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:50:08,902 INFO L93 Difference]: Finished difference Result 178 states and 197 transitions. [2022-11-19 07:50:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-19 07:50:08,902 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 3.72972972972973) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 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 46 [2022-11-19 07:50:08,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:50:08,904 INFO L225 Difference]: With dead ends: 178 [2022-11-19 07:50:08,904 INFO L226 Difference]: Without dead ends: 177 [2022-11-19 07:50:08,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1199, Invalid=4501, Unknown=0, NotChecked=0, Total=5700 [2022-11-19 07:50:08,907 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 552 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:50:08,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 227 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:50:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-19 07:50:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2022-11-19 07:50:08,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 172 states have (on average 1.0930232558139534) internal successors, (188), 174 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 188 transitions. [2022-11-19 07:50:08,919 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 188 transitions. Word has length 46 [2022-11-19 07:50:08,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:50:08,919 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 188 transitions. [2022-11-19 07:50:08,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 3.72972972972973) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:08,920 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 188 transitions. [2022-11-19 07:50:08,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-19 07:50:08,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:50:08,920 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1] [2022-11-19 07:50:08,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:50:09,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:09,127 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:50:09,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:50:09,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1609075768, now seen corresponding path program 2 times [2022-11-19 07:50:09,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:50:09,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197970048] [2022-11-19 07:50:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:09,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:50:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:09,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:50:09,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197970048] [2022-11-19 07:50:09,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197970048] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:50:09,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264624335] [2022-11-19 07:50:09,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:50:09,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:09,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:50:09,423 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:50:09,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 07:50:09,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:50:09,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:50:09,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 07:50:09,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:50:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:09,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:50:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:10,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264624335] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:50:10,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1634316981] [2022-11-19 07:50:10,293 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 07:50:10,293 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:50:10,294 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:50:10,294 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:50:10,294 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:50:10,472 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:50:11,078 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6384#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (<= (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~x~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:50:11,079 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:50:11,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:50:11,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-11-19 07:50:11,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332533153] [2022-11-19 07:50:11,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:50:11,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-19 07:50:11,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:50:11,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-19 07:50:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=3312, Unknown=0, NotChecked=0, Total=3782 [2022-11-19 07:50:11,081 INFO L87 Difference]: Start difference. First operand 175 states and 188 transitions. Second operand has 50 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:11,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:50:11,883 INFO L93 Difference]: Finished difference Result 236 states and 251 transitions. [2022-11-19 07:50:11,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-19 07:50:11,884 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 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 48 [2022-11-19 07:50:11,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:50:11,885 INFO L225 Difference]: With dead ends: 236 [2022-11-19 07:50:11,885 INFO L226 Difference]: Without dead ends: 235 [2022-11-19 07:50:11,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2711 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1034, Invalid=5608, Unknown=0, NotChecked=0, Total=6642 [2022-11-19 07:50:11,887 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 551 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:50:11,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 268 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:50:11,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-19 07:50:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 227. [2022-11-19 07:50:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 224 states have (on average 1.0669642857142858) internal successors, (239), 226 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:11,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 239 transitions. [2022-11-19 07:50:11,900 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 239 transitions. Word has length 48 [2022-11-19 07:50:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:50:11,900 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 239 transitions. [2022-11-19 07:50:11,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:11,901 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 239 transitions. [2022-11-19 07:50:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-19 07:50:11,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:50:11,901 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2022-11-19 07:50:11,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:50:12,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-19 07:50:12,111 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:50:12,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:50:12,112 INFO L85 PathProgramCache]: Analyzing trace with hash -986243773, now seen corresponding path program 2 times [2022-11-19 07:50:12,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:50:12,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316574122] [2022-11-19 07:50:12,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:12,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:50:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:12,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:50:12,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316574122] [2022-11-19 07:50:12,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316574122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:50:12,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311999279] [2022-11-19 07:50:12,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:50:12,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:12,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:50:12,484 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:50:12,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 07:50:12,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 07:50:12,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:50:12,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 07:50:12,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:50:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:12,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:50:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:13,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311999279] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:50:13,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1445465981] [2022-11-19 07:50:13,407 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:50:13,407 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:50:13,408 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:50:13,408 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:50:13,408 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:50:13,608 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:50:14,388 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7281#(and (< 2147483646 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= |#NULL.offset| 0) (not (= (mod |ULTIMATE.start_main_~flag~0#1| 256) 0)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:50:14,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:50:14,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:50:14,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 50 [2022-11-19 07:50:14,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513622405] [2022-11-19 07:50:14,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:50:14,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-19 07:50:14,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:50:14,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-19 07:50:14,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=3724, Unknown=0, NotChecked=0, Total=4290 [2022-11-19 07:50:14,392 INFO L87 Difference]: Start difference. First operand 227 states and 239 transitions. Second operand has 52 states, 51 states have (on average 2.843137254901961) internal successors, (145), 51 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:15,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:50:15,471 INFO L93 Difference]: Finished difference Result 229 states and 239 transitions. [2022-11-19 07:50:15,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-19 07:50:15,472 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.843137254901961) internal successors, (145), 51 states have internal predecessors, (145), 0 states have call successors, (0), 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 49 [2022-11-19 07:50:15,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:50:15,473 INFO L225 Difference]: With dead ends: 229 [2022-11-19 07:50:15,473 INFO L226 Difference]: Without dead ends: 228 [2022-11-19 07:50:15,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3509 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1495, Invalid=7061, Unknown=0, NotChecked=0, Total=8556 [2022-11-19 07:50:15,476 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 725 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:50:15,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 229 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:50:15,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-19 07:50:15,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2022-11-19 07:50:15,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 224 states have (on average 1.0491071428571428) internal successors, (235), 226 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:15,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 235 transitions. [2022-11-19 07:50:15,489 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 235 transitions. Word has length 49 [2022-11-19 07:50:15,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:50:15,489 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 235 transitions. [2022-11-19 07:50:15,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.843137254901961) internal successors, (145), 51 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:15,490 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 235 transitions. [2022-11-19 07:50:15,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-19 07:50:15,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:50:15,491 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1] [2022-11-19 07:50:15,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-19 07:50:15,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-19 07:50:15,700 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:50:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:50:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1783262402, now seen corresponding path program 2 times [2022-11-19 07:50:15,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:50:15,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561518694] [2022-11-19 07:50:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:15,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:50:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:16,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:50:16,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561518694] [2022-11-19 07:50:16,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561518694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:50:16,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002614951] [2022-11-19 07:50:16,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:50:16,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:16,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:50:16,396 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:50:16,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-19 07:50:16,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-19 07:50:16,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:50:16,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-19 07:50:16,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:50:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:17,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:50:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:18,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002614951] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:50:18,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1163233671] [2022-11-19 07:50:18,452 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 07:50:18,452 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:50:18,452 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:50:18,453 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:50:18,453 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:50:18,632 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:50:19,419 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8467#(and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:50:19,419 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:50:19,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:50:19,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 84 [2022-11-19 07:50:19,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722820760] [2022-11-19 07:50:19,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:50:19,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-11-19 07:50:19,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:50:19,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-11-19 07:50:19,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1145, Invalid=8361, Unknown=0, NotChecked=0, Total=9506 [2022-11-19 07:50:19,422 INFO L87 Difference]: Start difference. First operand 227 states and 235 transitions. Second operand has 86 states, 85 states have (on average 3.176470588235294) internal successors, (270), 85 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:50:23,173 INFO L93 Difference]: Finished difference Result 322 states and 334 transitions. [2022-11-19 07:50:23,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-19 07:50:23,174 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 3.176470588235294) internal successors, (270), 85 states have internal predecessors, (270), 0 states have call successors, (0), 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 90 [2022-11-19 07:50:23,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:50:23,181 INFO L225 Difference]: With dead ends: 322 [2022-11-19 07:50:23,182 INFO L226 Difference]: Without dead ends: 321 [2022-11-19 07:50:23,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9623 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=4273, Invalid=20533, Unknown=0, NotChecked=0, Total=24806 [2022-11-19 07:50:23,186 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1145 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:50:23,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 475 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:50:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-19 07:50:23,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 309. [2022-11-19 07:50:23,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 306 states have (on average 1.0588235294117647) internal successors, (324), 308 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:23,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 324 transitions. [2022-11-19 07:50:23,206 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 324 transitions. Word has length 90 [2022-11-19 07:50:23,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:50:23,207 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 324 transitions. [2022-11-19 07:50:23,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 3.176470588235294) internal successors, (270), 85 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:23,207 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 324 transitions. [2022-11-19 07:50:23,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-19 07:50:23,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:50:23,208 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1] [2022-11-19 07:50:23,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:50:23,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:23,414 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:50:23,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:50:23,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1551488719, now seen corresponding path program 2 times [2022-11-19 07:50:23,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:50:23,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249515491] [2022-11-19 07:50:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:23,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:50:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:24,281 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:24,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:50:24,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249515491] [2022-11-19 07:50:24,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249515491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:50:24,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429168235] [2022-11-19 07:50:24,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:50:24,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:24,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:50:24,283 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:50:24,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-19 07:50:24,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-19 07:50:24,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:50:24,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-19 07:50:24,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:50:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:25,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:50:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:26,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429168235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:50:26,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1815654259] [2022-11-19 07:50:26,571 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:50:26,572 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:50:26,572 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:50:26,572 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:50:26,572 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:50:26,729 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:50:27,693 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9944#(and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:50:27,693 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:50:27,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:50:27,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 96 [2022-11-19 07:50:27,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672919436] [2022-11-19 07:50:27,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:50:27,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-11-19 07:50:27,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:50:27,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-11-19 07:50:27,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1605, Invalid=10827, Unknown=0, NotChecked=0, Total=12432 [2022-11-19 07:50:27,698 INFO L87 Difference]: Start difference. First operand 309 states and 324 transitions. Second operand has 98 states, 97 states have (on average 2.9072164948453607) internal successors, (282), 97 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:31,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:50:31,615 INFO L93 Difference]: Finished difference Result 385 states and 402 transitions. [2022-11-19 07:50:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-19 07:50:31,615 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 2.9072164948453607) internal successors, (282), 97 states have internal predecessors, (282), 0 states have call successors, (0), 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 94 [2022-11-19 07:50:31,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:50:31,617 INFO L225 Difference]: With dead ends: 385 [2022-11-19 07:50:31,617 INFO L226 Difference]: Without dead ends: 384 [2022-11-19 07:50:31,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11978 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=5051, Invalid=24361, Unknown=0, NotChecked=0, Total=29412 [2022-11-19 07:50:31,621 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1529 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:50:31,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 397 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:50:31,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-19 07:50:31,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 371. [2022-11-19 07:50:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 368 states have (on average 1.0706521739130435) internal successors, (394), 370 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 394 transitions. [2022-11-19 07:50:31,641 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 394 transitions. Word has length 94 [2022-11-19 07:50:31,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:50:31,641 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 394 transitions. [2022-11-19 07:50:31,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 2.9072164948453607) internal successors, (282), 97 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 394 transitions. [2022-11-19 07:50:31,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-19 07:50:31,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:50:31,643 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1] [2022-11-19 07:50:31,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-19 07:50:31,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-19 07:50:31,851 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:50:31,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:50:31,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2037673487, now seen corresponding path program 3 times [2022-11-19 07:50:31,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:50:31,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75058938] [2022-11-19 07:50:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:31,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:50:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:32,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:50:32,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75058938] [2022-11-19 07:50:32,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75058938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:50:32,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018301757] [2022-11-19 07:50:32,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:50:32,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:32,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:50:32,678 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:50:32,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-19 07:50:32,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:50:32,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:50:32,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-19 07:50:32,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:50:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:33,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:50:35,133 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:35,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018301757] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:50:35,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1687671700] [2022-11-19 07:50:35,138 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:50:35,139 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:50:35,139 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:50:35,139 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:50:35,139 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:50:35,309 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:50:36,363 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11578#(and (< 2147483646 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= |#NULL.offset| 0) (not (= (mod |ULTIMATE.start_main_~flag~0#1| 256) 0)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:50:36,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:50:36,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:50:36,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 98 [2022-11-19 07:50:36,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088608108] [2022-11-19 07:50:36,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:50:36,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-11-19 07:50:36,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:50:36,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-11-19 07:50:36,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1678, Invalid=11204, Unknown=0, NotChecked=0, Total=12882 [2022-11-19 07:50:36,368 INFO L87 Difference]: Start difference. First operand 371 states and 394 transitions. Second operand has 100 states, 99 states have (on average 2.919191919191919) internal successors, (289), 99 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:40,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:50:40,407 INFO L93 Difference]: Finished difference Result 387 states and 398 transitions. [2022-11-19 07:50:40,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-19 07:50:40,408 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 2.919191919191919) internal successors, (289), 99 states have internal predecessors, (289), 0 states have call successors, (0), 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 97 [2022-11-19 07:50:40,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:50:40,410 INFO L225 Difference]: With dead ends: 387 [2022-11-19 07:50:40,410 INFO L226 Difference]: Without dead ends: 386 [2022-11-19 07:50:40,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12272 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=5487, Invalid=24269, Unknown=0, NotChecked=0, Total=29756 [2022-11-19 07:50:40,412 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1620 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:50:40,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 445 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:50:40,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-19 07:50:40,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 374. [2022-11-19 07:50:40,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 371 states have (on average 1.0512129380053907) internal successors, (390), 373 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:40,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 390 transitions. [2022-11-19 07:50:40,435 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 390 transitions. Word has length 97 [2022-11-19 07:50:40,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:50:40,435 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 390 transitions. [2022-11-19 07:50:40,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 2.919191919191919) internal successors, (289), 99 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 390 transitions. [2022-11-19 07:50:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-19 07:50:40,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:50:40,437 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1] [2022-11-19 07:50:40,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-19 07:50:40,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-19 07:50:40,642 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:50:40,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:50:40,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1935678174, now seen corresponding path program 3 times [2022-11-19 07:50:40,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:50:40,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481771237] [2022-11-19 07:50:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:40,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:50:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:41,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:50:41,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481771237] [2022-11-19 07:50:41,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481771237] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:50:41,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60776099] [2022-11-19 07:50:41,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:50:41,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:41,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:50:41,509 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:50:41,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-19 07:50:41,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:50:41,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:50:41,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-19 07:50:41,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:50:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:42,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:50:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:44,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60776099] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:50:44,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1070466432] [2022-11-19 07:50:44,194 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 07:50:44,195 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:50:44,195 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:50:44,195 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:50:44,195 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:50:44,375 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:50:45,605 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13285#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (<= (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~x~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:50:45,605 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:50:45,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:50:45,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 102 [2022-11-19 07:50:45,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373524787] [2022-11-19 07:50:45,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:50:45,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-11-19 07:50:45,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:50:45,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-11-19 07:50:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1595, Invalid=11745, Unknown=0, NotChecked=0, Total=13340 [2022-11-19 07:50:45,609 INFO L87 Difference]: Start difference. First operand 374 states and 390 transitions. Second operand has 104 states, 103 states have (on average 3.145631067961165) internal successors, (324), 103 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:49,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:50:49,219 INFO L93 Difference]: Finished difference Result 504 states and 533 transitions. [2022-11-19 07:50:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-19 07:50:49,220 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 3.145631067961165) internal successors, (324), 103 states have internal predecessors, (324), 0 states have call successors, (0), 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 108 [2022-11-19 07:50:49,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:50:49,222 INFO L225 Difference]: With dead ends: 504 [2022-11-19 07:50:49,222 INFO L226 Difference]: Without dead ends: 503 [2022-11-19 07:50:49,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10364 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=4142, Invalid=21298, Unknown=0, NotChecked=0, Total=25440 [2022-11-19 07:50:49,225 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1813 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:50:49,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 610 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:50:49,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-19 07:50:49,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 491. [2022-11-19 07:50:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 488 states have (on average 1.0430327868852458) internal successors, (509), 490 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 509 transitions. [2022-11-19 07:50:49,250 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 509 transitions. Word has length 108 [2022-11-19 07:50:49,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:50:49,250 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 509 transitions. [2022-11-19 07:50:49,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 3.145631067961165) internal successors, (324), 103 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:50:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 509 transitions. [2022-11-19 07:50:49,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-19 07:50:49,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:50:49,253 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1] [2022-11-19 07:50:49,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-19 07:50:49,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-19 07:50:49,463 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:50:49,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:50:49,463 INFO L85 PathProgramCache]: Analyzing trace with hash 203261593, now seen corresponding path program 3 times [2022-11-19 07:50:49,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:50:49,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6353338] [2022-11-19 07:50:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:50:49,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:50:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:50:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 0 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:52,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:50:52,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6353338] [2022-11-19 07:50:52,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6353338] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:50:52,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431334908] [2022-11-19 07:50:52,296 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:50:52,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:50:52,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:50:52,297 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:50:52,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-19 07:50:52,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:50:52,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:50:52,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-19 07:50:52,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:50:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 0 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:50:56,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:51:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 0 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:00,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431334908] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:51:00,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1250608916] [2022-11-19 07:51:00,744 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:51:00,744 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:51:00,744 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:51:00,745 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:51:00,745 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:51:00,954 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:51:02,596 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15798#(and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:51:02,596 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:51:02,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:51:02,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 192 [2022-11-19 07:51:02,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259151986] [2022-11-19 07:51:02,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:51:02,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2022-11-19 07:51:02,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:02,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2022-11-19 07:51:02,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5589, Invalid=37467, Unknown=0, NotChecked=0, Total=43056 [2022-11-19 07:51:02,601 INFO L87 Difference]: Start difference. First operand 491 states and 509 transitions. Second operand has 194 states, 193 states have (on average 2.9533678756476682) internal successors, (570), 193 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:21,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:21,985 INFO L93 Difference]: Finished difference Result 729 states and 770 transitions. [2022-11-19 07:51:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-11-19 07:51:21,985 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 193 states have (on average 2.9533678756476682) internal successors, (570), 193 states have internal predecessors, (570), 0 states have call successors, (0), 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 190 [2022-11-19 07:51:21,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:21,987 INFO L225 Difference]: With dead ends: 729 [2022-11-19 07:51:21,988 INFO L226 Difference]: Without dead ends: 728 [2022-11-19 07:51:21,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44719 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=19631, Invalid=90261, Unknown=0, NotChecked=0, Total=109892 [2022-11-19 07:51:21,995 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 5298 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 1544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5298 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 2684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1544 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:21,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5298 Valid, 803 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1544 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-19 07:51:21,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-19 07:51:22,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 703. [2022-11-19 07:51:22,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 700 states have (on average 1.0571428571428572) internal successors, (740), 702 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 740 transitions. [2022-11-19 07:51:22,066 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 740 transitions. Word has length 190 [2022-11-19 07:51:22,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:22,069 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 740 transitions. [2022-11-19 07:51:22,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 193 states have (on average 2.9533678756476682) internal successors, (570), 193 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:22,069 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 740 transitions. [2022-11-19 07:51:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-19 07:51:22,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:22,072 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1] [2022-11-19 07:51:22,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-19 07:51:22,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-19 07:51:22,278 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:51:22,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:22,278 INFO L85 PathProgramCache]: Analyzing trace with hash -537708633, now seen corresponding path program 4 times [2022-11-19 07:51:22,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:22,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532519811] [2022-11-19 07:51:22,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:22,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 0 proven. 1425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:25,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:25,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532519811] [2022-11-19 07:51:25,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532519811] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:51:25,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144366700] [2022-11-19 07:51:25,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:51:25,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:51:25,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:51:25,175 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:51:25,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-19 07:51:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:25,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-19 07:51:25,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:51:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 0 proven. 1425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:28,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:51:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 0 proven. 1425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:33,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144366700] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:51:33,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1756693895] [2022-11-19 07:51:33,272 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:51:33,272 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:51:33,273 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:51:33,273 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:51:33,273 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:51:33,544 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:51:35,130 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18968#(and (< 2147483646 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= |#NULL.offset| 0) (not (= (mod |ULTIMATE.start_main_~flag~0#1| 256) 0)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:51:35,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:51:35,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:51:35,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 194 [2022-11-19 07:51:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377940114] [2022-11-19 07:51:35,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:51:35,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2022-11-19 07:51:35,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2022-11-19 07:51:35,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5726, Invalid=38164, Unknown=0, NotChecked=0, Total=43890 [2022-11-19 07:51:35,137 INFO L87 Difference]: Start difference. First operand 703 states and 740 transitions. Second operand has 196 states, 195 states have (on average 2.958974358974359) internal successors, (577), 195 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:54,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:54,921 INFO L93 Difference]: Finished difference Result 739 states and 757 transitions. [2022-11-19 07:51:54,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-11-19 07:51:54,923 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 195 states have (on average 2.958974358974359) internal successors, (577), 195 states have internal predecessors, (577), 0 states have call successors, (0), 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 193 [2022-11-19 07:51:54,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:54,926 INFO L225 Difference]: With dead ends: 739 [2022-11-19 07:51:54,927 INFO L226 Difference]: Without dead ends: 738 [2022-11-19 07:51:54,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45511 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=21251, Invalid=89305, Unknown=0, NotChecked=0, Total=110556 [2022-11-19 07:51:54,933 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 6824 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 1835 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6824 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1835 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:54,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6824 Valid, 792 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1835 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-19 07:51:54,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-11-19 07:51:54,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 706. [2022-11-19 07:51:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 703 states have (on average 1.035561877667141) internal successors, (728), 705 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 728 transitions. [2022-11-19 07:51:54,976 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 728 transitions. Word has length 193 [2022-11-19 07:51:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:54,976 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 728 transitions. [2022-11-19 07:51:54,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 195 states have (on average 2.958974358974359) internal successors, (577), 195 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 728 transitions. [2022-11-19 07:51:54,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-19 07:51:54,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:54,980 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1] [2022-11-19 07:51:54,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-19 07:51:55,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:51:55,187 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:51:55,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:55,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1541410518, now seen corresponding path program 4 times [2022-11-19 07:51:55,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:55,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839118223] [2022-11-19 07:51:55,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:55,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 0 proven. 2442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:58,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:58,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839118223] [2022-11-19 07:51:58,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839118223] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:51:58,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75642298] [2022-11-19 07:51:58,622 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:51:58,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:51:58,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:51:58,623 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:51:58,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-19 07:51:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:58,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-19 07:51:58,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:03,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 0 proven. 2442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:52:03,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:52:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 0 proven. 2442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:52:08,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75642298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:52:08,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1040157460] [2022-11-19 07:52:08,270 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 07:52:08,270 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:52:08,270 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:52:08,271 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:52:08,271 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:52:08,406 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:52:09,742 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22376#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (<= (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~x~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:52:09,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:52:09,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:52:09,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 210 [2022-11-19 07:52:09,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637334043] [2022-11-19 07:52:09,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:52:09,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 212 states [2022-11-19 07:52:09,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:09,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2022-11-19 07:52:09,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5897, Invalid=44055, Unknown=0, NotChecked=0, Total=49952 [2022-11-19 07:52:09,749 INFO L87 Difference]: Start difference. First operand 706 states and 728 transitions. Second operand has 212 states, 211 states have (on average 3.241706161137441) internal successors, (684), 211 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:52:28,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:28,557 INFO L93 Difference]: Finished difference Result 1048 states and 1111 transitions. [2022-11-19 07:52:28,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-11-19 07:52:28,558 INFO L78 Accepts]: Start accepts. Automaton has has 212 states, 211 states have (on average 3.241706161137441) internal successors, (684), 211 states have internal predecessors, (684), 0 states have call successors, (0), 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 228 [2022-11-19 07:52:28,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:28,561 INFO L225 Difference]: With dead ends: 1048 [2022-11-19 07:52:28,561 INFO L226 Difference]: Without dead ends: 1047 [2022-11-19 07:52:28,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40250 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=16730, Invalid=82810, Unknown=0, NotChecked=0, Total=99540 [2022-11-19 07:52:28,568 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 7774 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 1412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7774 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 2307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1412 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:28,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7774 Valid, 1324 Invalid, 2307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1412 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 07:52:28,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2022-11-19 07:52:28,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1019. [2022-11-19 07:52:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1016 states have (on average 1.046259842519685) internal successors, (1063), 1018 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:52:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1063 transitions. [2022-11-19 07:52:28,625 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1063 transitions. Word has length 228 [2022-11-19 07:52:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:28,625 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1063 transitions. [2022-11-19 07:52:28,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 212 states, 211 states have (on average 3.241706161137441) internal successors, (684), 211 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:52:28,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1063 transitions. [2022-11-19 07:52:28,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-19 07:52:28,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:28,632 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 32, 32, 32, 1, 1, 1] [2022-11-19 07:52:28,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-19 07:52:28,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:52:28,838 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:52:28,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:28,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1032520150, now seen corresponding path program 3 times [2022-11-19 07:52:28,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:28,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989667896] [2022-11-19 07:52:28,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:28,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5216 backedges. 0 proven. 5216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:52:35,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:35,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989667896] [2022-11-19 07:52:35,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989667896] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:52:35,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85044943] [2022-11-19 07:52:35,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:52:35,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:52:35,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:52:35,309 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:52:35,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-19 07:52:35,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:52:35,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:52:35,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-19 07:52:35,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5216 backedges. 0 proven. 5216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:52:43,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:52:54,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5216 backedges. 0 proven. 5216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:52:54,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85044943] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:52:54,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1859405312] [2022-11-19 07:52:54,355 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 07:52:54,355 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:52:54,355 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:52:54,356 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:52:54,356 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:52:54,526 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:52:56,338 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27101#(and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:52:56,339 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:52:56,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:52:56,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100, 100] total 300 [2022-11-19 07:52:56,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544997216] [2022-11-19 07:52:56,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:52:56,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 302 states [2022-11-19 07:52:56,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:56,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 302 interpolants. [2022-11-19 07:52:56,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11573, Invalid=86709, Unknown=0, NotChecked=0, Total=98282 [2022-11-19 07:52:56,346 INFO L87 Difference]: Start difference. First operand 1019 states and 1063 transitions. Second operand has 302 states, 301 states have (on average 3.2890365448504983) internal successors, (990), 301 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:54:06,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:06,674 INFO L93 Difference]: Finished difference Result 1246 states and 1306 transitions. [2022-11-19 07:54:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2022-11-19 07:54:06,675 INFO L78 Accepts]: Start accepts. Automaton has has 302 states, 301 states have (on average 3.2890365448504983) internal successors, (990), 301 states have internal predecessors, (990), 0 states have call successors, (0), 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 330 [2022-11-19 07:54:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:06,679 INFO L225 Difference]: With dead ends: 1246 [2022-11-19 07:54:06,679 INFO L226 Difference]: Without dead ends: 1245 [2022-11-19 07:54:06,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1305 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 529 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110065 ImplicationChecksByTransitivity, 87.3s TimeCoverageRelationStatistics Valid=53513, Invalid=227917, Unknown=0, NotChecked=0, Total=281430 [2022-11-19 07:54:06,690 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7840 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 2219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7840 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 4565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2219 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:06,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7840 Valid, 1676 Invalid, 4565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2219 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 07:54:06,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-11-19 07:54:06,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1221. [2022-11-19 07:54:06,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1218 states have (on average 1.0443349753694582) internal successors, (1272), 1220 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:54:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1272 transitions. [2022-11-19 07:54:06,777 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1272 transitions. Word has length 330 [2022-11-19 07:54:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:06,777 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1272 transitions. [2022-11-19 07:54:06,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 302 states, 301 states have (on average 3.2890365448504983) internal successors, (990), 301 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:54:06,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1272 transitions. [2022-11-19 07:54:06,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-11-19 07:54:06,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:06,781 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1] [2022-11-19 07:54:06,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:06,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:06,991 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:54:06,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:06,991 INFO L85 PathProgramCache]: Analyzing trace with hash 213885289, now seen corresponding path program 4 times [2022-11-19 07:54:06,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:06,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010094432] [2022-11-19 07:54:06,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:06,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5828 backedges. 0 proven. 5828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:54:16,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:16,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010094432] [2022-11-19 07:54:16,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010094432] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:54:16,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851662736] [2022-11-19 07:54:16,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:54:16,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:16,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:16,420 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:16,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-19 07:54:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:16,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 129 conjunts are in the unsatisfiable core [2022-11-19 07:54:16,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5828 backedges. 0 proven. 5828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:54:28,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5828 backedges. 0 proven. 5828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:54:44,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851662736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:54:44,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1715257881] [2022-11-19 07:54:44,247 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:54:44,247 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:54:44,248 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:54:44,248 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:54:44,248 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:54:44,412 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:54:46,911 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32912#(and (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:54:46,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:54:46,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:54:46,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 384 [2022-11-19 07:54:46,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110568725] [2022-11-19 07:54:46,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:54:46,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 386 states [2022-11-19 07:54:46,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:46,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 386 interpolants. [2022-11-19 07:54:46,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20853, Invalid=138747, Unknown=0, NotChecked=0, Total=159600 [2022-11-19 07:54:46,931 INFO L87 Difference]: Start difference. First operand 1221 states and 1272 transitions. Second operand has 386 states, 385 states have (on average 2.9766233766233765) internal successors, (1146), 385 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:56:27,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:56:27,957 INFO L93 Difference]: Finished difference Result 1477 states and 1530 transitions. [2022-11-19 07:56:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 351 states. [2022-11-19 07:56:27,957 INFO L78 Accepts]: Start accepts. Automaton has has 386 states, 385 states have (on average 2.9766233766233765) internal successors, (1146), 385 states have internal predecessors, (1146), 0 states have call successors, (0), 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 382 [2022-11-19 07:56:27,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:56:27,962 INFO L225 Difference]: With dead ends: 1477 [2022-11-19 07:56:27,962 INFO L226 Difference]: Without dead ends: 1476 [2022-11-19 07:56:27,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1524 GetRequests, 874 SyntacticMatches, 0 SemanticMatches, 650 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172565 ImplicationChecksByTransitivity, 124.8s TimeCoverageRelationStatistics Valid=77591, Invalid=346861, Unknown=0, NotChecked=0, Total=424452 [2022-11-19 07:56:27,989 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 20997 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 2141 mSolverCounterSat, 5820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20997 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 7961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5820 IncrementalHoareTripleChecker+Valid, 2141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:56:27,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20997 Valid, 1503 Invalid, 7961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5820 Valid, 2141 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-19 07:56:27,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-19 07:56:28,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1427. [2022-11-19 07:56:28,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1424 states have (on average 1.0519662921348314) internal successors, (1498), 1426 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:56:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1498 transitions. [2022-11-19 07:56:28,072 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1498 transitions. Word has length 382 [2022-11-19 07:56:28,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:56:28,073 INFO L495 AbstractCegarLoop]: Abstraction has 1427 states and 1498 transitions. [2022-11-19 07:56:28,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 386 states, 385 states have (on average 2.9766233766233765) internal successors, (1146), 385 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:56:28,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1498 transitions. [2022-11-19 07:56:28,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-19 07:56:28,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:56:28,076 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 31, 31, 1, 1, 1] [2022-11-19 07:56:28,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-19 07:56:28,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:56:28,283 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:56:28,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:56:28,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1874761001, now seen corresponding path program 5 times [2022-11-19 07:56:28,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:56:28,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825632906] [2022-11-19 07:56:28,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:56:28,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:56:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:56:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5921 backedges. 0 proven. 5921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:56:37,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:56:37,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825632906] [2022-11-19 07:56:37,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825632906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:56:37,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226500850] [2022-11-19 07:56:37,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:56:37,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:56:37,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:56:37,426 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:56:37,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-19 07:56:37,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2022-11-19 07:56:37,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:56:37,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 130 conjunts are in the unsatisfiable core [2022-11-19 07:56:37,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:56:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5921 backedges. 0 proven. 5921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:56:49,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:57:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5921 backedges. 0 proven. 5921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:57:05,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226500850] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:57:05,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1535625512] [2022-11-19 07:57:05,421 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:57:05,421 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:57:05,421 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:57:05,422 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:57:05,422 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:57:05,586 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:57:08,171 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '39286#(and (< 2147483646 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= |#NULL.offset| 0) (not (= (mod |ULTIMATE.start_main_~flag~0#1| 256) 0)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:57:08,171 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:57:08,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:57:08,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 386 [2022-11-19 07:57:08,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140344456] [2022-11-19 07:57:08,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:57:08,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 388 states [2022-11-19 07:57:08,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:08,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 388 interpolants. [2022-11-19 07:57:08,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21118, Invalid=140084, Unknown=0, NotChecked=0, Total=161202 [2022-11-19 07:57:08,188 INFO L87 Difference]: Start difference. First operand 1427 states and 1498 transitions. Second operand has 388 states, 387 states have (on average 2.979328165374677) internal successors, (1153), 387 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:57,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:57,177 INFO L93 Difference]: Finished difference Result 1467 states and 1502 transitions. [2022-11-19 07:58:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 351 states. [2022-11-19 07:58:57,178 INFO L78 Accepts]: Start accepts. Automaton has has 388 states, 387 states have (on average 2.979328165374677) internal successors, (1153), 387 states have internal predecessors, (1153), 0 states have call successors, (0), 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 385 [2022-11-19 07:58:57,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:57,182 INFO L225 Difference]: With dead ends: 1467 [2022-11-19 07:58:57,183 INFO L226 Difference]: Without dead ends: 1466 [2022-11-19 07:58:57,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1533 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 651 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174903 ImplicationChecksByTransitivity, 132.4s TimeCoverageRelationStatistics Valid=83883, Invalid=341873, Unknown=0, NotChecked=0, Total=425756 [2022-11-19 07:58:57,203 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 20665 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 6043 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20665 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 8357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6043 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:57,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20665 Valid, 1748 Invalid, 8357 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6043 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-19 07:58:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2022-11-19 07:58:57,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1430. [2022-11-19 07:58:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1427 states have (on average 1.0301331464611072) internal successors, (1470), 1429 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:57,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1470 transitions. [2022-11-19 07:58:57,287 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1470 transitions. Word has length 385 [2022-11-19 07:58:57,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:57,288 INFO L495 AbstractCegarLoop]: Abstraction has 1430 states and 1470 transitions. [2022-11-19 07:58:57,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 388 states, 387 states have (on average 2.979328165374677) internal successors, (1153), 387 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:58:57,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1470 transitions. [2022-11-19 07:58:57,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-11-19 07:58:57,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:57,293 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1] [2022-11-19 07:58:57,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-19 07:58:57,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-19 07:58:57,499 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:58:57,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash 984383938, now seen corresponding path program 5 times [2022-11-19 07:58:57,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:57,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712918147] [2022-11-19 07:58:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:57,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10626 backedges. 0 proven. 10626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:08,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:08,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712918147] [2022-11-19 07:59:08,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712918147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:59:08,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221239704] [2022-11-19 07:59:08,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:59:08,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:08,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:08,983 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:08,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-19 07:59:09,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-19 07:59:09,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:59:09,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 143 conjunts are in the unsatisfiable core [2022-11-19 07:59:09,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 10626 backedges. 0 proven. 10626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:25,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:59:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10626 backedges. 0 proven. 10626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:59:45,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221239704] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:59:45,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [716619269] [2022-11-19 07:59:45,402 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 07:59:45,402 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:59:45,402 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:59:45,403 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:59:45,403 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:59:45,569 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:59:47,957 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '46189#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (not (<= (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~x~0#1|) 2147483647)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:59:47,957 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:59:47,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:59:47,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142, 142] total 426 [2022-11-19 07:59:47,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503292587] [2022-11-19 07:59:47,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:59:47,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 428 states [2022-11-19 07:59:47,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:47,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 428 interpolants. [2022-11-19 07:59:47,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22709, Invalid=170451, Unknown=0, NotChecked=0, Total=193160 [2022-11-19 07:59:47,972 INFO L87 Difference]: Start difference. First operand 1430 states and 1470 transitions. Second operand has 428 states, 427 states have (on average 3.288056206088993) internal successors, (1404), 427 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:01:43,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:43,859 INFO L93 Difference]: Finished difference Result 2136 states and 2261 transitions. [2022-11-19 08:01:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 285 states. [2022-11-19 08:01:43,860 INFO L78 Accepts]: Start accepts. Automaton has has 428 states, 427 states have (on average 3.288056206088993) internal successors, (1404), 427 states have internal predecessors, (1404), 0 states have call successors, (0), 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 468 [2022-11-19 08:01:43,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:43,866 INFO L225 Difference]: With dead ends: 2136 [2022-11-19 08:01:43,866 INFO L226 Difference]: Without dead ends: 2135 [2022-11-19 08:01:43,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1732 GetRequests, 1106 SyntacticMatches, 0 SemanticMatches, 626 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158342 ImplicationChecksByTransitivity, 149.4s TimeCoverageRelationStatistics Valid=67394, Invalid=326362, Unknown=0, NotChecked=0, Total=393756 [2022-11-19 08:01:43,889 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28178 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 5335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28178 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 7149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5335 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:43,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28178 Valid, 2635 Invalid, 7149 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5335 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 08:01:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2135 states. [2022-11-19 08:01:43,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2135 to 2075. [2022-11-19 08:01:43,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 2072 states have (on average 1.04488416988417) internal successors, (2165), 2074 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:01:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2165 transitions. [2022-11-19 08:01:43,999 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2165 transitions. Word has length 468 [2022-11-19 08:01:44,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:44,000 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 2165 transitions. [2022-11-19 08:01:44,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 428 states, 427 states have (on average 3.288056206088993) internal successors, (1404), 427 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:01:44,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2165 transitions. [2022-11-19 08:01:44,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2022-11-19 08:01:44,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:44,007 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 67, 67, 67, 67, 66, 66, 66, 1, 1, 1] [2022-11-19 08:01:44,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:44,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-19 08:01:44,214 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 08:01:44,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:44,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1563403096, now seen corresponding path program 4 times [2022-11-19 08:01:44,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:44,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774234254] [2022-11-19 08:01:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:44,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 21978 backedges. 0 proven. 21978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:02:09,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:09,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774234254] [2022-11-19 08:02:09,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774234254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:02:09,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823165461] [2022-11-19 08:02:09,194 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 08:02:09,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:02:09,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:02:09,195 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:02:09,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd87bf9f-54a7-4822-8d08-c56db9f10ece/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-19 08:02:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:09,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 203 conjunts are in the unsatisfiable core [2022-11-19 08:02:09,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:02:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 21978 backedges. 0 proven. 21978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:02:40,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:03:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 21978 backedges. 0 proven. 21978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:03:20,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823165461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:03:20,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1836856731] [2022-11-19 08:03:20,314 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:03:20,314 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:03:20,314 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:03:20,314 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:03:20,315 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:03:20,448 INFO L180 IcfgInterpreter]: Interpretation finished