./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-examples/standard_compare_ground.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_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/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_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_compare_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/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_84a6a3c5-1474-45a0-89b5-ac20c105453a/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 d4cee1ffe184d6f720684150b88947bfbeafd0a7d6fa25fd546666420e94872c --- 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 08:15:34,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:15:34,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:15:34,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:15:34,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:15:34,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:15:34,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:15:34,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:15:34,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:15:34,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:15:34,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:15:34,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:15:34,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:15:34,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:15:34,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:15:34,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:15:34,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:15:34,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:15:34,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:15:34,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:15:34,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:15:34,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:15:34,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:15:34,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:15:34,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:15:34,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:15:34,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:15:34,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:15:34,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:15:34,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:15:34,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:15:34,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:15:34,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:15:34,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:15:34,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:15:34,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:15:34,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:15:34,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:15:34,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:15:34,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:15:34,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:15:34,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 08:15:34,460 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:15:34,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:15:34,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:15:34,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:15:34,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:15:34,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:15:34,462 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:15:34,462 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:15:34,463 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:15:34,463 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:15:34,464 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:15:34,464 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:15:34,464 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:15:34,465 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:15:34,465 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:15:34,465 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:15:34,465 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:15:34,466 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:15:34,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:15:34,466 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:15:34,467 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:15:34,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:15:34,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:15:34,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:15:34,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:15:34,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:15:34,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:15:34,468 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 08:15:34,468 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:15:34,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:15:34,469 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:15:34,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:15:34,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:15:34,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:15:34,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:15:34,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:15:34,471 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:15:34,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:15:34,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:15:34,472 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:15:34,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:15:34,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:15:34,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:15:34,472 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_84a6a3c5-1474-45a0-89b5-ac20c105453a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4cee1ffe184d6f720684150b88947bfbeafd0a7d6fa25fd546666420e94872c [2022-11-19 08:15:34,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:15:34,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:15:34,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:15:34,791 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:15:34,792 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:15:34,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/array-examples/standard_compare_ground.i [2022-11-19 08:15:34,873 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/data/7124ef90e/1e42082f713c4a62bfd7800c64bd84bf/FLAG35f9f7d04 [2022-11-19 08:15:35,429 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:15:35,430 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/sv-benchmarks/c/array-examples/standard_compare_ground.i [2022-11-19 08:15:35,441 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/data/7124ef90e/1e42082f713c4a62bfd7800c64bd84bf/FLAG35f9f7d04 [2022-11-19 08:15:35,878 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/data/7124ef90e/1e42082f713c4a62bfd7800c64bd84bf [2022-11-19 08:15:35,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:15:35,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:15:35,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:15:35,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:15:35,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:15:35,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:15:35" (1/1) ... [2022-11-19 08:15:35,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20582b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:35, skipping insertion in model container [2022-11-19 08:15:35,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:15:35" (1/1) ... [2022-11-19 08:15:35,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:15:35,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:15:36,102 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_84a6a3c5-1474-45a0-89b5-ac20c105453a/sv-benchmarks/c/array-examples/standard_compare_ground.i[816,829] [2022-11-19 08:15:36,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:15:36,133 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:15:36,150 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_84a6a3c5-1474-45a0-89b5-ac20c105453a/sv-benchmarks/c/array-examples/standard_compare_ground.i[816,829] [2022-11-19 08:15:36,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:15:36,188 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:15:36,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:36 WrapperNode [2022-11-19 08:15:36,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:15:36,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:15:36,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:15:36,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:15:36,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:36" (1/1) ... [2022-11-19 08:15:36,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:36" (1/1) ... [2022-11-19 08:15:36,234 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2022-11-19 08:15:36,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:15:36,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:15:36,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:15:36,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:15:36,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:36" (1/1) ... [2022-11-19 08:15:36,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:36" (1/1) ... [2022-11-19 08:15:36,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:36" (1/1) ... [2022-11-19 08:15:36,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:36" (1/1) ... [2022-11-19 08:15:36,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:36" (1/1) ... [2022-11-19 08:15:36,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:36" (1/1) ... [2022-11-19 08:15:36,278 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:36" (1/1) ... [2022-11-19 08:15:36,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:36" (1/1) ... [2022-11-19 08:15:36,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:15:36,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:15:36,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:15:36,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:15:36,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:36" (1/1) ... [2022-11-19 08:15:36,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:15:36,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:15:36,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:15:36,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:15:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:15:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:15:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:15:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:15:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:15:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:15:36,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:15:36,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:15:36,468 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:15:36,470 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:15:36,644 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:15:36,695 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:15:36,695 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 08:15:36,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:15:36 BoogieIcfgContainer [2022-11-19 08:15:36,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:15:36,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:15:36,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:15:36,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:15:36,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:15:35" (1/3) ... [2022-11-19 08:15:36,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f52bb2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:15:36, skipping insertion in model container [2022-11-19 08:15:36,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:36" (2/3) ... [2022-11-19 08:15:36,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f52bb2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:15:36, skipping insertion in model container [2022-11-19 08:15:36,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:15:36" (3/3) ... [2022-11-19 08:15:36,708 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_compare_ground.i [2022-11-19 08:15:36,727 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:15:36,727 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-19 08:15:36,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:15:36,854 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;@664a4cf7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:15:36,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-19 08:15:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 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 08:15:36,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:15:36,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:36,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:15:36,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:15:36,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:36,880 INFO L85 PathProgramCache]: Analyzing trace with hash 111086, now seen corresponding path program 1 times [2022-11-19 08:15:36,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:36,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171083972] [2022-11-19 08:15:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:36,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:37,284 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 08:15:37,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:37,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171083972] [2022-11-19 08:15:37,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171083972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:15:37,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:15:37,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:15:37,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836406732] [2022-11-19 08:15:37,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:15:37,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:15:37,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:37,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:15:37,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:15:37,335 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 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 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:15:37,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:15:37,441 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-11-19 08:15:37,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:15:37,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-19 08:15:37,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:15:37,453 INFO L225 Difference]: With dead ends: 37 [2022-11-19 08:15:37,453 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 08:15:37,467 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 08:15:37,476 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 35 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 08:15:37,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 35 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:15:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 08:15:37,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-19 08:15:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 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 08:15:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-11-19 08:15:37,518 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 3 [2022-11-19 08:15:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:15:37,519 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-19 08:15:37,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:15:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-11-19 08:15:37,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:15:37,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:37,522 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 08:15:37,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:15:37,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:15:37,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:37,526 INFO L85 PathProgramCache]: Analyzing trace with hash -985556610, now seen corresponding path program 1 times [2022-11-19 08:15:37,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:37,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256696856] [2022-11-19 08:15:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:37,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:37,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:15:37,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:37,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256696856] [2022-11-19 08:15:37,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256696856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:15:37,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:15:37,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:15:37,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042258004] [2022-11-19 08:15:37,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:15:37,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:15:37,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:37,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:15:37,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:15:37,702 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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 08:15:37,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:15:37,728 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-11-19 08:15:37,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:15:37,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 08:15:37,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:15:37,730 INFO L225 Difference]: With dead ends: 20 [2022-11-19 08:15:37,731 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 08:15:37,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 08:15:37,741 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:15:37,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:15:37,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 08:15:37,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-19 08:15:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 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 08:15:37,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-19 08:15:37,749 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2022-11-19 08:15:37,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:15:37,749 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-19 08:15:37,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 08:15:37,750 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-19 08:15:37,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:15:37,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:37,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-11-19 08:15:37,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:15:37,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:15:37,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:37,752 INFO L85 PathProgramCache]: Analyzing trace with hash -487483792, now seen corresponding path program 1 times [2022-11-19 08:15:37,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:37,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63104550] [2022-11-19 08:15:37,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:37,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:37,897 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 08:15:37,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:37,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63104550] [2022-11-19 08:15:37,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63104550] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:15:37,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494909419] [2022-11-19 08:15:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:37,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:37,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:15:37,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:15:37,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:15:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:37,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:15:37,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:15:38,061 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 08:15:38,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:15:38,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494909419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:15:38,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:15:38,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-11-19 08:15:38,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136179937] [2022-11-19 08:15:38,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:15:38,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:15:38,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:38,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:15:38,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:15:38,068 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:15:38,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:15:38,114 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-11-19 08:15:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:15:38,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 08:15:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:15:38,117 INFO L225 Difference]: With dead ends: 19 [2022-11-19 08:15:38,117 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 08:15:38,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:15:38,123 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:15:38,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 18 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:15:38,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 08:15:38,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2022-11-19 08:15:38,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:15:38,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-11-19 08:15:38,134 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 7 [2022-11-19 08:15:38,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:15:38,135 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-11-19 08:15:38,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:15:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-11-19 08:15:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:15:38,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:38,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:15:38,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 08:15:38,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:38,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:15:38,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:38,342 INFO L85 PathProgramCache]: Analyzing trace with hash -487471743, now seen corresponding path program 1 times [2022-11-19 08:15:38,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:38,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141073211] [2022-11-19 08:15:38,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:38,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:15:38,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:38,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141073211] [2022-11-19 08:15:38,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141073211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:15:38,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778503619] [2022-11-19 08:15:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:38,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:38,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:15:38,466 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:15:38,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:15:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:38,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:15:38,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:15:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:15:38,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:15:38,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778503619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:15:38,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:15:38,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2022-11-19 08:15:38,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724092864] [2022-11-19 08:15:38,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:15:38,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:15:38,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:38,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:15:38,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:15:38,556 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:15:38,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:15:38,586 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-11-19 08:15:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:15:38,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 08:15:38,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:15:38,588 INFO L225 Difference]: With dead ends: 26 [2022-11-19 08:15:38,588 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 08:15:38,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:15:38,589 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:15:38,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:15:38,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 08:15:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-11-19 08:15:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 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 08:15:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-11-19 08:15:38,594 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 7 [2022-11-19 08:15:38,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:15:38,594 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-11-19 08:15:38,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:15:38,595 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-11-19 08:15:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:15:38,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:38,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:15:38,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 08:15:38,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:38,801 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:15:38,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:38,802 INFO L85 PathProgramCache]: Analyzing trace with hash 2068245220, now seen corresponding path program 1 times [2022-11-19 08:15:38,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:38,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066906547] [2022-11-19 08:15:38,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:38,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:15:38,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:38,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066906547] [2022-11-19 08:15:38,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066906547] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:15:38,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268936304] [2022-11-19 08:15:38,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:38,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:38,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:15:38,872 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:15:38,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:15:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:38,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:15:38,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:15:38,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:15:38,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:15:38,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268936304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:15:38,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:15:38,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2022-11-19 08:15:38,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394667657] [2022-11-19 08:15:38,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:15:38,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:15:38,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:38,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:15:38,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:15:38,982 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 08:15:39,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:15:39,010 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-11-19 08:15:39,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:15:39,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 08:15:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:15:39,011 INFO L225 Difference]: With dead ends: 18 [2022-11-19 08:15:39,011 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 08:15:39,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:15:39,012 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:15:39,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:15:39,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 08:15:39,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-19 08:15:39,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 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 08:15:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-19 08:15:39,025 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 8 [2022-11-19 08:15:39,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:15:39,025 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-19 08:15:39,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 08:15:39,025 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-19 08:15:39,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 08:15:39,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:39,026 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:15:39,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:15:39,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:39,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:15:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash -986197779, now seen corresponding path program 1 times [2022-11-19 08:15:39,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:39,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011786344] [2022-11-19 08:15:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:39,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:15:39,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:39,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011786344] [2022-11-19 08:15:39,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011786344] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:15:39,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971191802] [2022-11-19 08:15:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:39,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:39,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:15:39,320 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:15:39,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:15:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:39,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:15:39,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:15:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:15:39,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:15:39,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971191802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:15:39,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:15:39,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2022-11-19 08:15:39,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614479549] [2022-11-19 08:15:39,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:15:39,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:15:39,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:39,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:15:39,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:15:39,403 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 08:15:39,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:15:39,428 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-11-19 08:15:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:15:39,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 08:15:39,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:15:39,430 INFO L225 Difference]: With dead ends: 17 [2022-11-19 08:15:39,430 INFO L226 Difference]: Without dead ends: 16 [2022-11-19 08:15:39,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:15:39,432 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:15:39,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 14 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:15:39,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-19 08:15:39,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-11-19 08:15:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 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 08:15:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-19 08:15:39,442 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2022-11-19 08:15:39,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:15:39,442 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-19 08:15:39,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 08:15:39,442 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-19 08:15:39,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 08:15:39,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:39,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:15:39,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:15:39,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:39,649 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:15:39,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:39,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1451748030, now seen corresponding path program 1 times [2022-11-19 08:15:39,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:39,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026882062] [2022-11-19 08:15:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:39,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:15:39,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:39,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026882062] [2022-11-19 08:15:39,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026882062] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:15:39,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764866452] [2022-11-19 08:15:39,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:39,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:39,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:15:39,736 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:15:39,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:15:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:39,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:15:39,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:15:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:15:39,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:15:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:15:39,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764866452] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:15:39,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1049137954] [2022-11-19 08:15:39,879 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-19 08:15:39,879 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:15:39,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:15:39,888 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:15:39,889 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:15:39,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:39,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,029 INFO L321 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2022-11-19 08:15:40,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2022-11-19 08:15:40,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,111 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-19 08:15:40,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-19 08:15:40,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-19 08:15:40,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-19 08:15:40,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:40,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:40,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:40,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:40,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:40,744 INFO L321 Elim1Store]: treesize reduction 176, result has 19.3 percent of original size [2022-11-19 08:15:40,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 353 treesize of output 322 [2022-11-19 08:15:41,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:41,275 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-19 08:15:41,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-19 08:15:41,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:41,495 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-19 08:15:41,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-19 08:15:41,514 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:15:42,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1049137954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:15:42,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:15:42,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4, 4] total 17 [2022-11-19 08:15:42,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436334046] [2022-11-19 08:15:42,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:15:42,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 08:15:42,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:42,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 08:15:42,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-11-19 08:15:42,117 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:15:42,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:15:42,365 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-11-19 08:15:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:15:42,366 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 08:15:42,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:15:42,366 INFO L225 Difference]: With dead ends: 20 [2022-11-19 08:15:42,366 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 08:15:42,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-19 08:15:42,368 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:15:42,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 9 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:15:42,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 08:15:42,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-19 08:15:42,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 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 08:15:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-11-19 08:15:42,373 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-11-19 08:15:42,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:15:42,373 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-11-19 08:15:42,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:15:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-11-19 08:15:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 08:15:42,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:42,374 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:15:42,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:15:42,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:42,580 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:15:42,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1295011058, now seen corresponding path program 1 times [2022-11-19 08:15:42,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:42,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525721540] [2022-11-19 08:15:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:42,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:15:42,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:42,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525721540] [2022-11-19 08:15:42,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525721540] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:15:42,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182100838] [2022-11-19 08:15:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:42,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:42,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:15:42,660 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:15:42,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:15:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:42,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:15:42,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:15:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:15:42,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:15:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:15:42,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182100838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:15:42,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [47693115] [2022-11-19 08:15:42,776 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-19 08:15:42,776 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:15:42,776 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:15:42,776 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:15:42,776 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:15:42,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:42,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:42,829 INFO L321 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2022-11-19 08:15:42,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2022-11-19 08:15:42,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:42,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:42,886 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-19 08:15:42,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-19 08:15:42,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:42,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:42,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-19 08:15:42,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:42,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:42,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:42,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:42,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-19 08:15:43,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:43,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:43,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:43,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:43,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:43,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:43,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:43,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:43,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:43,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:43,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:43,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:43,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:43,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:43,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:43,227 INFO L321 Elim1Store]: treesize reduction 141, result has 7.2 percent of original size [2022-11-19 08:15:43,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 385 treesize of output 316 [2022-11-19 08:15:43,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:43,363 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-19 08:15:43,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-19 08:15:43,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:43,715 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-19 08:15:43,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-19 08:15:43,727 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:15:44,862 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '674#(and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a~0#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (<= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (<= |ULTIMATE.start_main_~rv~0#1| 1) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#NULL.offset|) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:15:44,862 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:15:44,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:15:44,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-19 08:15:44,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119909631] [2022-11-19 08:15:44,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:15:44,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 08:15:44,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:44,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 08:15:44,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-11-19 08:15:44,864 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 08:15:44,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:15:44,932 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-11-19 08:15:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:15:44,933 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 15 [2022-11-19 08:15:44,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:15:44,933 INFO L225 Difference]: With dead ends: 37 [2022-11-19 08:15:44,933 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 08:15:44,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-11-19 08:15:44,934 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:15:44,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:15:44,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 08:15:44,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-19 08:15:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:15:44,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-11-19 08:15:44,943 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 15 [2022-11-19 08:15:44,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:15:44,943 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-11-19 08:15:44,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 08:15:44,943 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-11-19 08:15:44,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 08:15:44,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:44,944 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:15:44,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:15:45,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:45,149 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:15:45,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:45,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1404909298, now seen corresponding path program 2 times [2022-11-19 08:15:45,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:45,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163203818] [2022-11-19 08:15:45,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:45,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:45,221 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:15:45,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:45,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163203818] [2022-11-19 08:15:45,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163203818] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:15:45,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664769164] [2022-11-19 08:15:45,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:15:45,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:45,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:15:45,223 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:15:45,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:15:45,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-19 08:15:45,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:15:45,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:15:45,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:15:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:15:45,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:15:45,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664769164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:15:45,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:15:45,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-19 08:15:45,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347672662] [2022-11-19 08:15:45,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:15:45,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:15:45,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:45,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:15:45,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:15:45,305 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 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 08:15:45,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:15:45,327 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-11-19 08:15:45,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:15:45,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 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 21 [2022-11-19 08:15:45,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:15:45,328 INFO L225 Difference]: With dead ends: 24 [2022-11-19 08:15:45,328 INFO L226 Difference]: Without dead ends: 23 [2022-11-19 08:15:45,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:15:45,329 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:15:45,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:15:45,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-19 08:15:45,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-19 08:15:45,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 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 08:15:45,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-11-19 08:15:45,336 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 21 [2022-11-19 08:15:45,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:15:45,336 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-11-19 08:15:45,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 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 08:15:45,336 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-11-19 08:15:45,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 08:15:45,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:45,337 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:15:45,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:15:45,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-19 08:15:45,543 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-19 08:15:45,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:45,544 INFO L85 PathProgramCache]: Analyzing trace with hash -602515180, now seen corresponding path program 1 times [2022-11-19 08:15:45,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:45,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696338870] [2022-11-19 08:15:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:45,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 08:15:45,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:45,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696338870] [2022-11-19 08:15:45,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696338870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:15:45,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745728661] [2022-11-19 08:15:45,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:45,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:45,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:15:45,607 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:15:45,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 08:15:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:45,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:15:45,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:15:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:15:45,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:15:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:15:45,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745728661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:15:45,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [859864612] [2022-11-19 08:15:45,861 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-19 08:15:45,862 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:15:45,862 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:15:45,862 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:15:45,862 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:15:45,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:45,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:45,918 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-19 08:15:45,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-19 08:15:45,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:45,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:45,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2022-11-19 08:15:45,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:45,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:45,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-19 08:15:46,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-19 08:15:46,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:46,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:46,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:46,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:46,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:46,233 INFO L321 Elim1Store]: treesize reduction 141, result has 7.2 percent of original size [2022-11-19 08:15:46,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 385 treesize of output 316 [2022-11-19 08:15:46,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:46,360 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-19 08:15:46,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-19 08:15:46,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:15:46,697 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-19 08:15:46,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-19 08:15:46,710 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:15:47,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [859864612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:15:47,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:15:47,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 8, 8] total 27 [2022-11-19 08:15:47,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942342120] [2022-11-19 08:15:47,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:15:47,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 08:15:47,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:47,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 08:15:47,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2022-11-19 08:15:47,784 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 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 08:15:48,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:15:48,330 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-11-19 08:15:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:15:48,331 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 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 22 [2022-11-19 08:15:48,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:15:48,332 INFO L225 Difference]: With dead ends: 23 [2022-11-19 08:15:48,332 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 08:15:48,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2022-11-19 08:15:48,338 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:15:48,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:15:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 08:15:48,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 08:15:48,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:15:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 08:15:48,340 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-11-19 08:15:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:15:48,340 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 08:15:48,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 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 08:15:48,340 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 08:15:48,341 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 08:15:48,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-19 08:15:48,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-19 08:15:48,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-19 08:15:48,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-19 08:15:48,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-19 08:15:48,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-19 08:15:48,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 08:15:48,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:48,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 08:15:49,079 INFO L899 garLoopResultBuilder]: For program point L35-3(line 35) no Hoare annotation was computed. [2022-11-19 08:15:49,079 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2022-11-19 08:15:49,079 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2022-11-19 08:15:49,079 INFO L899 garLoopResultBuilder]: For program point L35-4(line 35) no Hoare annotation was computed. [2022-11-19 08:15:49,080 INFO L895 garLoopResultBuilder]: At program point L35-5(lines 35 37) the Hoare annotation is: (let ((.cse1 (<= 1 |ULTIMATE.start_main_~x~0#1|))) (let ((.cse0 (let ((.cse9 (<= 100000 |ULTIMATE.start_main_~i~0#1|)) (.cse10 (<= 0 |ULTIMATE.start_main_~#a~0#1.base|)) (.cse11 (<= |ULTIMATE.start_main_~#b~0#1.offset| 0)) (.cse12 (<= 0 |ULTIMATE.start_main_~#b~0#1.offset|))) (or (and .cse9 (<= 0 |ULTIMATE.start_main_~x~0#1|) .cse10 .cse11 (<= |ULTIMATE.start_main_~x~0#1| 0) .cse12) (and .cse9 .cse10 .cse11 (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) .cse1 (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (<= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) .cse12)))) (.cse2 (<= |ULTIMATE.start_main_~rv~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~#a~0#1.offset| 0)) (.cse4 (<= 100000 |ULTIMATE.start_main_~j~0#1|)) (.cse5 (= |#NULL.offset| 0)) (.cse6 (<= 0 |ULTIMATE.start_main_~#b~0#1.base|)) (.cse7 (<= 0 |#StackHeapBarrier|)) (.cse8 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse2 .cse3 .cse4 .cse5 (not (= |ULTIMATE.start_main_~rv~0#1| 0)) .cse6 .cse7 .cse8)))) [2022-11-19 08:15:49,080 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 32) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~rv~0#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-19 08:15:49,080 INFO L899 garLoopResultBuilder]: For program point L27-3(lines 16 40) no Hoare annotation was computed. [2022-11-19 08:15:49,080 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2022-11-19 08:15:49,080 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 08:15:49,081 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 35) no Hoare annotation was computed. [2022-11-19 08:15:49,081 INFO L899 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2022-11-19 08:15:49,081 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-19 08:15:49,081 INFO L899 garLoopResultBuilder]: For program point L20-4(line 20) no Hoare annotation was computed. [2022-11-19 08:15:49,081 INFO L895 garLoopResultBuilder]: At program point L20-5(lines 20 23) the Hoare annotation is: (let ((.cse3 (<= 1 |ULTIMATE.start_main_~j~0#1|))) (and (let ((.cse0 (<= 0 |#NULL.base|)) (.cse1 (<= |ULTIMATE.start_main_~#b~0#1.offset| 0)) (.cse2 (<= 0 |ULTIMATE.start_main_~#a~0#1.offset|)) (.cse4 (<= |#NULL.offset| 0)) (.cse5 (<= |ULTIMATE.start_main_~#a~0#1.offset| 0)) (.cse6 (<= |#NULL.base| 0)) (.cse7 (<= 0 |#NULL.offset|)) (.cse8 (<= 0 |ULTIMATE.start_main_~#b~0#1.offset|))) (or (and .cse0 (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) .cse7 .cse8 (<= 0 |#StackHeapBarrier|)) (and .cse0 .cse1 .cse2 .cse4 (<= 0 |ULTIMATE.start_main_~j~0#1|) .cse5 .cse6 .cse7 .cse8 (<= |ULTIMATE.start_main_~j~0#1| 0)))) (or .cse3 (let ((.cse9 (select |#memory_int| 1))) (and (= 400000 (select |#length| |ULTIMATE.start_main_~#b~0#1.base|)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#a~0#1.base|) (= 26 (select |#length| 2)) (= 2 (select |#length| 1)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#b~0#1.base|) (= 400000 (select |#length| |ULTIMATE.start_main_~#a~0#1.base|)) (= (select |#valid| 1) 1) (= (select |#valid| |ULTIMATE.start_main_~#b~0#1.base|) 1) (= (select |#valid| |ULTIMATE.start_main_~#a~0#1.base|) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse9 0) 48) (not (= |ULTIMATE.start_main_~#b~0#1.base| |ULTIMATE.start_main_~#a~0#1.base|)) (= (select .cse9 1) 0) (< 0 |#StackHeapBarrier|)))))) [2022-11-19 08:15:49,081 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2022-11-19 08:15:49,082 INFO L902 garLoopResultBuilder]: At program point L33(lines 33 38) the Hoare annotation is: true [2022-11-19 08:15:49,082 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 08:15:49,082 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 35) no Hoare annotation was computed. [2022-11-19 08:15:49,082 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2022-11-19 08:15:49,085 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:15:49,088 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:15:49,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:15:49 BoogieIcfgContainer [2022-11-19 08:15:49,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:15:49,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:15:49,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:15:49,109 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:15:49,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:15:36" (3/4) ... [2022-11-19 08:15:49,113 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 08:15:49,121 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-19 08:15:49,121 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-19 08:15:49,122 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-19 08:15:49,122 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 08:15:49,145 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((100000 <= i && 0 <= x) && 0 <= a) && b <= 0) && x <= 0) && 0 <= b) || (((((((((100000 <= i && 0 <= a) && b <= 0) && x <= 2147483647) && cond <= 1) && 1 <= x) && \old(cond) <= 1) && 0 <= cond) && 0 <= \old(cond)) && 0 <= b)) && 1 <= x) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((100000 <= i && 0 <= x) && 0 <= a) && b <= 0) && x <= 0) && 0 <= b) || (((((((((100000 <= i && 0 <= a) && b <= 0) && x <= 2147483647) && cond <= 1) && 1 <= x) && \old(cond) <= 1) && 0 <= cond) && 0 <= \old(cond)) && 0 <= b)) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && !(rv == 0)) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) [2022-11-19 08:15:49,156 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:15:49,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:15:49,157 INFO L158 Benchmark]: Toolchain (without parser) took 13273.96ms. Allocated memory was 113.2MB in the beginning and 237.0MB in the end (delta: 123.7MB). Free memory was 79.3MB in the beginning and 124.4MB in the end (delta: -45.1MB). Peak memory consumption was 78.5MB. Max. memory is 16.1GB. [2022-11-19 08:15:49,157 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 59.9MB in the beginning and 59.8MB in the end (delta: 29.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:15:49,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.56ms. Allocated memory is still 113.2MB. Free memory was 79.1MB in the beginning and 88.9MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 08:15:49,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.75ms. Allocated memory is still 113.2MB. Free memory was 88.9MB in the beginning and 87.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:15:49,159 INFO L158 Benchmark]: Boogie Preprocessor took 57.80ms. Allocated memory is still 113.2MB. Free memory was 87.4MB in the beginning and 85.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:15:49,159 INFO L158 Benchmark]: RCFGBuilder took 404.25ms. Allocated memory is still 113.2MB. Free memory was 85.8MB in the beginning and 71.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 08:15:49,160 INFO L158 Benchmark]: TraceAbstraction took 12407.59ms. Allocated memory was 113.2MB in the beginning and 237.0MB in the end (delta: 123.7MB). Free memory was 71.1MB in the beginning and 126.5MB in the end (delta: -55.4MB). Peak memory consumption was 71.0MB. Max. memory is 16.1GB. [2022-11-19 08:15:49,160 INFO L158 Benchmark]: Witness Printer took 47.46ms. Allocated memory is still 237.0MB. Free memory was 126.5MB in the beginning and 124.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:15:49,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 59.9MB in the beginning and 59.8MB in the end (delta: 29.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.56ms. Allocated memory is still 113.2MB. Free memory was 79.1MB in the beginning and 88.9MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.75ms. Allocated memory is still 113.2MB. Free memory was 88.9MB in the beginning and 87.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.80ms. Allocated memory is still 113.2MB. Free memory was 87.4MB in the beginning and 85.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 404.25ms. Allocated memory is still 113.2MB. Free memory was 85.8MB in the beginning and 71.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12407.59ms. Allocated memory was 113.2MB in the beginning and 237.0MB in the end (delta: 123.7MB). Free memory was 71.1MB in the beginning and 126.5MB in the end (delta: -55.4MB). Peak memory consumption was 71.0MB. Max. memory is 16.1GB. * Witness Printer took 47.46ms. Allocated memory is still 237.0MB. Free memory was 126.5MB in the beginning and 124.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 35]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 35]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 12.3s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 82 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 164 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 98 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 262 IncrementalHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 66 mSDtfsCounter, 262 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 232 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=8, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 333 HoareAnnotationTreeSize, 4 FomulaSimplifications, 47 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 642 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 213 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 413 SizeOfPredicates, 7 NumberOfNonLiveVariables, 730 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 76/114 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 2.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 21, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 71, TOOLS_POST_TIME: 2.2s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 71, TOOLS_QUANTIFIERELIM_TIME: 2.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.5s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 131, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 7, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 10, DOMAIN_WIDEN_TIME: 0.2s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 15, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 21, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 5, LOOP_SUMMARIZER_CACHE_MISSES: 5, LOOP_SUMMARIZER_OVERALL_TIME: 1.8s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.8s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 15, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 302, DAG_COMPRESSION_RETAINED_NODES: 82, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((100000 <= i && 0 <= x) && 0 <= a) && b <= 0) && x <= 0) && 0 <= b) || (((((((((100000 <= i && 0 <= a) && b <= 0) && x <= 2147483647) && cond <= 1) && 1 <= x) && \old(cond) <= 1) && 0 <= cond) && 0 <= \old(cond)) && 0 <= b)) && 1 <= x) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((100000 <= i && 0 <= x) && 0 <= a) && b <= 0) && x <= 0) && 0 <= b) || (((((((((100000 <= i && 0 <= a) && b <= 0) && x <= 2147483647) && cond <= 1) && 1 <= x) && \old(cond) <= 1) && 0 <= cond) && 0 <= \old(cond)) && 0 <= b)) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && !(rv == 0)) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((((((((((0 <= #NULL && 0 <= a) && b <= 0) && 0 <= a) && 1 <= j) && #NULL <= 0) && a <= 0) && #NULL <= 0) && 0 <= b) && 0 <= #NULL) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((((0 <= #NULL && b <= 0) && 0 <= a) && #NULL <= 0) && 0 <= j) && a <= 0) && #NULL <= 0) && 0 <= #NULL) && 0 <= b) && j <= 0)) && (1 <= j || ((((((((((((((400000 == unknown-#length-unknown[b] && unknown-#StackHeapBarrier-unknown < a) && 26 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && unknown-#StackHeapBarrier-unknown < b) && 400000 == unknown-#length-unknown[a]) && \valid[1] == 1) && \valid[b] == 1) && \valid[a] == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && !(b == a)) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown)) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((0 <= a && b == 0) && 0 <= i) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-11-19 08:15:49,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6a3c5-1474-45a0-89b5-ac20c105453a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE