./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-acceleration/array_2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/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_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/array_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/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_906d5afa-23df-45b3-a3c6-0941a155f95d/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 866342b97e5be917007cb97e07a0644c7c9d2aa9b428c32cf026d727d672a191 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:17:46,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:17:46,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:17:46,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:17:46,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:17:46,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:17:46,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:17:46,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:17:46,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:17:46,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:17:46,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:17:46,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:17:46,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:17:46,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:17:46,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:17:46,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:17:46,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:17:46,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:17:46,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:17:46,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:17:46,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:17:46,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:17:46,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:17:46,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:17:46,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:17:46,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:17:46,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:17:46,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:17:46,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:17:46,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:17:46,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:17:46,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:17:46,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:17:46,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:17:46,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:17:46,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:17:46,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:17:46,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:17:46,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:17:46,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:17:46,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:17:46,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 07:17:46,611 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:17:46,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:17:46,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:17:46,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:17:46,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:17:46,614 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:17:46,614 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:17:46,614 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:17:46,614 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:17:46,615 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:17:46,616 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:17:46,616 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:17:46,616 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:17:46,616 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:17:46,617 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:17:46,617 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:17:46,617 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:17:46,617 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:17:46,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:17:46,618 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:17:46,619 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:17:46,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:17:46,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:17:46,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:17:46,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:17:46,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:17:46,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:17:46,620 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 07:17:46,621 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:17:46,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:17:46,621 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:17:46,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:17:46,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:17:46,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:17:46,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:17:46,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:17:46,623 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:17:46,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:17:46,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:17:46,624 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:17:46,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:17:46,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:17:46,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:17:46,624 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_906d5afa-23df-45b3-a3c6-0941a155f95d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 866342b97e5be917007cb97e07a0644c7c9d2aa9b428c32cf026d727d672a191 [2022-11-19 07:17:46,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:17:46,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:17:46,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:17:46,974 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:17:46,977 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:17:46,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/loop-acceleration/array_2-2.i [2022-11-19 07:17:47,042 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/data/f11f03032/b93b9db552424892a9172175aff938a3/FLAGfa6bf8b6c [2022-11-19 07:17:47,660 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:17:47,661 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/sv-benchmarks/c/loop-acceleration/array_2-2.i [2022-11-19 07:17:47,680 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/data/f11f03032/b93b9db552424892a9172175aff938a3/FLAGfa6bf8b6c [2022-11-19 07:17:48,006 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/data/f11f03032/b93b9db552424892a9172175aff938a3 [2022-11-19 07:17:48,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:17:48,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:17:48,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:17:48,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:17:48,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:17:48,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:17:48" (1/1) ... [2022-11-19 07:17:48,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7013e5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:48, skipping insertion in model container [2022-11-19 07:17:48,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:17:48" (1/1) ... [2022-11-19 07:17:48,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:17:48,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:17:48,271 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_906d5afa-23df-45b3-a3c6-0941a155f95d/sv-benchmarks/c/loop-acceleration/array_2-2.i[849,862] [2022-11-19 07:17:48,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:17:48,294 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:17:48,309 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_906d5afa-23df-45b3-a3c6-0941a155f95d/sv-benchmarks/c/loop-acceleration/array_2-2.i[849,862] [2022-11-19 07:17:48,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:17:48,333 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:17:48,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:48 WrapperNode [2022-11-19 07:17:48,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:17:48,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:17:48,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:17:48,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:17:48,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:48" (1/1) ... [2022-11-19 07:17:48,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:48" (1/1) ... [2022-11-19 07:17:48,374 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2022-11-19 07:17:48,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:17:48,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:17:48,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:17:48,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:17:48,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:48" (1/1) ... [2022-11-19 07:17:48,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:48" (1/1) ... [2022-11-19 07:17:48,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:48" (1/1) ... [2022-11-19 07:17:48,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:48" (1/1) ... [2022-11-19 07:17:48,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:48" (1/1) ... [2022-11-19 07:17:48,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:48" (1/1) ... [2022-11-19 07:17:48,402 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:48" (1/1) ... [2022-11-19 07:17:48,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:48" (1/1) ... [2022-11-19 07:17:48,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:17:48,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:17:48,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:17:48,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:17:48,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:48" (1/1) ... [2022-11-19 07:17:48,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:17:48,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:48,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:17:48,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:17:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:17:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:17:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:17:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:17:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:17:48,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:17:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:17:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:17:48,622 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:17:48,624 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:17:48,848 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:17:48,926 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:17:48,938 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:17:48,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:17:48 BoogieIcfgContainer [2022-11-19 07:17:48,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:17:48,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:17:48,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:17:48,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:17:48,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:17:48" (1/3) ... [2022-11-19 07:17:48,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dce375a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:17:48, skipping insertion in model container [2022-11-19 07:17:48,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:48" (2/3) ... [2022-11-19 07:17:48,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dce375a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:17:48, skipping insertion in model container [2022-11-19 07:17:48,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:17:48" (3/3) ... [2022-11-19 07:17:48,970 INFO L112 eAbstractionObserver]: Analyzing ICFG array_2-2.i [2022-11-19 07:17:49,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:17:49,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-19 07:17:49,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:17:49,113 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;@6b859fcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:17:49,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-19 07:17:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:17:49,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:17:49,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:49,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:17:49,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:17:49,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:49,139 INFO L85 PathProgramCache]: Analyzing trace with hash 83341, now seen corresponding path program 1 times [2022-11-19 07:17:49,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:49,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260896996] [2022-11-19 07:17:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:49,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:49,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:49,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260896996] [2022-11-19 07:17:49,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260896996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:49,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:49,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:17:49,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566630139] [2022-11-19 07:17:49,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:49,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:17:49,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:49,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:17:49,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:17:49,636 INFO L87 Difference]: Start difference. First operand has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 07:17:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:49,746 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-11-19 07:17:49,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:17:49,750 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 07:17:49,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:49,759 INFO L225 Difference]: With dead ends: 28 [2022-11-19 07:17:49,759 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 07:17:49,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:17:49,772 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:49,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 16 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:17:49,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 07:17:49,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2022-11-19 07:17:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.5) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:17:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-19 07:17:49,815 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 3 [2022-11-19 07:17:49,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:49,815 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-19 07:17:49,816 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 07:17:49,817 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-19 07:17:49,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:17:49,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:49,819 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 07:17:49,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:17:49,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:17:49,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:49,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1812108742, now seen corresponding path program 1 times [2022-11-19 07:17:49,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:49,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655409288] [2022-11-19 07:17:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:49,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:50,003 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 07:17:50,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:50,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655409288] [2022-11-19 07:17:50,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655409288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:50,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:50,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:17:50,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474737571] [2022-11-19 07:17:50,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:50,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:17:50,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:50,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:17:50,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:17:50,015 INFO L87 Difference]: Start difference. First operand 14 states and 15 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 07:17:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:50,047 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-11-19 07:17:50,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:17:50,048 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 07:17:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:50,049 INFO L225 Difference]: With dead ends: 14 [2022-11-19 07:17:50,050 INFO L226 Difference]: Without dead ends: 13 [2022-11-19 07:17:50,050 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 07:17:50,054 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:50,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:17:50,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-19 07:17:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-19 07:17:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:17:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-19 07:17:50,066 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2022-11-19 07:17:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:50,066 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-19 07:17:50,068 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 07:17:50,069 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-19 07:17:50,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:17:50,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:50,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-11-19 07:17:50,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:17:50,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:17:50,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:50,078 INFO L85 PathProgramCache]: Analyzing trace with hash -340796108, now seen corresponding path program 1 times [2022-11-19 07:17:50,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:50,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559158563] [2022-11-19 07:17:50,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:50,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:50,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:50,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559158563] [2022-11-19 07:17:50,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559158563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:17:50,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41625533] [2022-11-19 07:17:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:50,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:50,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:50,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:50,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:17:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:50,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:17:50,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:50,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:17:50,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41625533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:50,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:17:50,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-11-19 07:17:50,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674794128] [2022-11-19 07:17:50,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:50,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:17:50,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:50,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:17:50,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:17:50,441 INFO L87 Difference]: Start difference. First operand 13 states and 14 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 07:17:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:50,493 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-19 07:17:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:17:50,494 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 07:17:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:50,497 INFO L225 Difference]: With dead ends: 13 [2022-11-19 07:17:50,497 INFO L226 Difference]: Without dead ends: 12 [2022-11-19 07:17:50,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:17:50,503 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:50,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 8 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:17:50,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-19 07:17:50,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2022-11-19 07:17:50,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:17:50,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-11-19 07:17:50,515 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2022-11-19 07:17:50,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:50,516 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-11-19 07:17:50,516 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 07:17:50,516 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-11-19 07:17:50,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:17:50,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:50,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:50,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:17:50,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:50,724 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:17:50,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:50,725 INFO L85 PathProgramCache]: Analyzing trace with hash -340786141, now seen corresponding path program 1 times [2022-11-19 07:17:50,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:50,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473185144] [2022-11-19 07:17:50,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:50,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:50,834 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 07:17:50,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:50,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473185144] [2022-11-19 07:17:50,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473185144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:17:50,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034472450] [2022-11-19 07:17:50,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:50,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:50,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:50,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:50,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:17:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:50,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:17:50,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:50,950 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 07:17:50,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:17:50,990 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 07:17:50,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034472450] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:17:50,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [613059707] [2022-11-19 07:17:51,011 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 07:17:51,012 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:17:51,016 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:17:51,023 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:17:51,023 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:17:51,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:51,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:51,166 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-19 07:17:51,167 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 07:17:51,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:51,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:51,202 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 07:17:51,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:51,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:51,287 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 07:17:51,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:51,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:51,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:51,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:51,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:51,611 INFO L321 Elim1Store]: treesize reduction 224, result has 16.7 percent of original size [2022-11-19 07:17:51,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 281 treesize of output 272 [2022-11-19 07:17:52,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:52,350 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-19 07:17:52,350 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 07:17:52,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:52,406 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-19 07:17:52,407 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 07:17:52,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:52,446 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:17:52,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-19 07:17:52,453 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:17:52,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [613059707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:52,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:17:52,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 13 [2022-11-19 07:17:52,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675582098] [2022-11-19 07:17:52,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:52,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:17:52,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:52,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:17:52,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:17:52,683 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 07:17:52,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:52,839 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-19 07:17:52,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:17:52,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 07:17:52,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:52,841 INFO L225 Difference]: With dead ends: 22 [2022-11-19 07:17:52,841 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 07:17:52,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:17:52,843 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 14 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:52,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 10 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:17:52,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 07:17:52,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2022-11-19 07:17:52,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:17:52,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-19 07:17:52,849 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2022-11-19 07:17:52,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:52,850 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-19 07:17:52,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 07:17:52,850 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-19 07:17:52,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:17:52,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:52,851 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:52,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:17:53,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:53,059 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:17:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:53,059 INFO L85 PathProgramCache]: Analyzing trace with hash 942825445, now seen corresponding path program 1 times [2022-11-19 07:17:53,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:53,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750703200] [2022-11-19 07:17:53,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:53,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:53,136 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 07:17:53,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:53,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750703200] [2022-11-19 07:17:53,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750703200] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:17:53,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591921643] [2022-11-19 07:17:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:53,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:53,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:53,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:53,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:17:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:53,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:17:53,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:53,250 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 07:17:53,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:17:53,290 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 07:17:53,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591921643] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:17:53,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [899960948] [2022-11-19 07:17:53,294 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-19 07:17:53,295 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:17:53,295 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:17:53,295 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:17:53,295 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:17:53,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:53,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:53,357 INFO L321 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2022-11-19 07:17:53,358 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 07:17:53,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:53,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:53,428 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-19 07:17:53,428 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 07:17:53,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:53,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:53,471 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 07:17:53,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:53,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:53,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:53,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:53,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:53,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:17:53,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:53,611 INFO L321 Elim1Store]: treesize reduction 134, result has 12.4 percent of original size [2022-11-19 07:17:53,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 301 treesize of output 270 [2022-11-19 07:17:53,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:53,747 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-19 07:17:53,747 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 07:17:53,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:53,786 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-19 07:17:53,786 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 07:17:53,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:53,815 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:17:53,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-19 07:17:53,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:53,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:53,854 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-19 07:17:53,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 89 [2022-11-19 07:17:53,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:53,910 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:17:53,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-19 07:17:53,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:17:53,939 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-19 07:17:53,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-19 07:17:53,947 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:17:54,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [899960948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:54,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:17:54,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4] total 12 [2022-11-19 07:17:54,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939557382] [2022-11-19 07:17:54,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:54,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:17:54,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:17:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:17:54,153 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:17:54,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:54,190 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-19 07:17:54,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:17:54,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 07:17:54,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:54,192 INFO L225 Difference]: With dead ends: 13 [2022-11-19 07:17:54,192 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:17:54,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:17:54,193 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:54,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:17:54,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:17:54,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:17:54,194 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 07:17:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:17:54,194 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-11-19 07:17:54,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:54,195 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:17:54,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:17:54,195 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:17:54,195 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:17:54,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-19 07:17:54,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-19 07:17:54,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-19 07:17:54,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-19 07:17:54,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:17:54,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:54,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 07:17:54,495 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-19 07:17:54,496 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 07:17:54,496 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2022-11-19 07:17:54,496 INFO L899 garLoopResultBuilder]: For program point L29-3(line 29) no Hoare annotation was computed. [2022-11-19 07:17:54,496 INFO L899 garLoopResultBuilder]: For program point L29-4(line 29) no Hoare annotation was computed. [2022-11-19 07:17:54,497 INFO L895 garLoopResultBuilder]: At program point L29-5(lines 29 32) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-19 07:17:54,497 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2022-11-19 07:17:54,497 INFO L899 garLoopResultBuilder]: For program point L25-4(line 25) no Hoare annotation was computed. [2022-11-19 07:17:54,497 INFO L895 garLoopResultBuilder]: At program point L25-5(lines 25 28) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-19 07:17:54,498 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-19 07:17:54,498 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2022-11-19 07:17:54,498 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 07:17:54,502 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-19 07:17:54,504 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:17:54,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:17:54 BoogieIcfgContainer [2022-11-19 07:17:54,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:17:54,522 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:17:54,523 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:17:54,523 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:17:54,523 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:17:48" (3/4) ... [2022-11-19 07:17:54,527 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:17:54,537 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-19 07:17:54,537 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-19 07:17:54,537 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-19 07:17:54,538 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 07:17:54,573 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:17:54,574 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:17:54,575 INFO L158 Benchmark]: Toolchain (without parser) took 6563.50ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 75.3MB in the beginning and 62.2MB in the end (delta: 13.0MB). Peak memory consumption was 63.4MB. Max. memory is 16.1GB. [2022-11-19 07:17:54,575 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 104.9MB. Free memory was 58.6MB in the beginning and 58.6MB in the end (delta: 47.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:17:54,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.73ms. Allocated memory is still 104.9MB. Free memory was 75.0MB in the beginning and 80.6MB in the end (delta: -5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:17:54,576 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.63ms. Allocated memory is still 104.9MB. Free memory was 80.6MB in the beginning and 79.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:17:54,576 INFO L158 Benchmark]: Boogie Preprocessor took 26.48ms. Allocated memory is still 104.9MB. Free memory was 79.3MB in the beginning and 78.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:17:54,577 INFO L158 Benchmark]: RCFGBuilder took 539.05ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 65.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 07:17:54,578 INFO L158 Benchmark]: TraceAbstraction took 5574.71ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 64.2MB in the beginning and 64.3MB in the end (delta: -93.5kB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. [2022-11-19 07:17:54,578 INFO L158 Benchmark]: Witness Printer took 51.54ms. Allocated memory is still 155.2MB. Free memory was 64.3MB in the beginning and 62.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:17:54,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 104.9MB. Free memory was 58.6MB in the beginning and 58.6MB in the end (delta: 47.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.73ms. Allocated memory is still 104.9MB. Free memory was 75.0MB in the beginning and 80.6MB in the end (delta: -5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.63ms. Allocated memory is still 104.9MB. Free memory was 80.6MB in the beginning and 79.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.48ms. Allocated memory is still 104.9MB. Free memory was 79.3MB in the beginning and 78.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 539.05ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 65.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5574.71ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 64.2MB in the beginning and 64.3MB in the end (delta: -93.5kB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. * Witness Printer took 51.54ms. Allocated memory is still 155.2MB. Free memory was 64.3MB in the beginning and 62.2MB 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: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: 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, 12 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 16 mSDtfsCounter, 93 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=1, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 50 HoareAnnotationTreeSize, 2 FomulaSimplifications, 57 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 52 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 142 SizeOfPredicates, 3 NumberOfNonLiveVariables, 262 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 11/20 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: 2.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 40, TOOLS_POST_TIME: 1.9s, 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: 40, TOOLS_QUANTIFIERELIM_TIME: 1.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.6s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 78, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 6, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME: 1.6s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.6s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, 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: 92, DAG_COMPRESSION_RETAINED_NODES: 51, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((((0 <= A && A == 0) && 0 <= i) && #NULL == 0) && 0 <= B) && B == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((((0 <= A && A == 0) && 0 <= i) && #NULL == 0) && 0 <= B) && B == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-11-19 07:17:54,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_906d5afa-23df-45b3-a3c6-0941a155f95d/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