./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loops/nec11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/nec11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh --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 b78564a93d1d434db2fa377a9b33de67cda5b233a427ae8d3550b20661e154a3 --- 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-2329fc7 [2022-12-14 11:40:43,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:40:43,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:40:43,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:40:43,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:40:43,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:40:43,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:40:43,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:40:43,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:40:43,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:40:43,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:40:43,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:40:43,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:40:43,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:40:43,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:40:43,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:40:43,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:40:43,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:40:43,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:40:43,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:40:43,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:40:43,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:40:43,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:40:43,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:40:43,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:40:43,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:40:43,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:40:43,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:40:43,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:40:43,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:40:43,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:40:43,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:40:43,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:40:43,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:40:43,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:40:43,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:40:43,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:40:43,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:40:43,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:40:43,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:40:43,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:40:43,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 11:40:43,441 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:40:43,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:40:43,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:40:43,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:40:43,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:40:43,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:40:43,442 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:40:43,442 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:40:43,442 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:40:43,442 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:40:43,442 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:40:43,442 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:40:43,442 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:40:43,443 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:40:43,443 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:40:43,443 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:40:43,443 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:40:43,443 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:40:43,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:40:43,444 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:40:43,444 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:40:43,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:40:43,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:40:43,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:40:43,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:40:43,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:40:43,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:40:43,445 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 11:40:43,445 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:40:43,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:40:43,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:40:43,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:40:43,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:40:43,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:40:43,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:40:43,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:40:43,446 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:40:43,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:40:43,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:40:43,447 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:40:43,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:40:43,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:40:43,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:40:43,447 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_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78564a93d1d434db2fa377a9b33de67cda5b233a427ae8d3550b20661e154a3 [2022-12-14 11:40:43,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:40:43,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:40:43,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:40:43,673 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:40:43,673 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:40:43,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/loops/nec11.c [2022-12-14 11:40:46,333 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:40:46,503 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:40:46,503 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/sv-benchmarks/c/loops/nec11.c [2022-12-14 11:40:46,507 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/data/479701ccd/e7af415f716842c4b5538e85ffab6468/FLAGc3ae5e6c2 [2022-12-14 11:40:46,518 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/data/479701ccd/e7af415f716842c4b5538e85ffab6468 [2022-12-14 11:40:46,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:40:46,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:40:46,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:40:46,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:40:46,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:40:46,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1fe649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46, skipping insertion in model container [2022-12-14 11:40:46,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:40:46,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:40:46,639 WARN L237 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_a56943c6-67cc-4aee-a3ed-117abd7e5948/sv-benchmarks/c/loops/nec11.c[317,330] [2022-12-14 11:40:46,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:40:46,653 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:40:46,662 WARN L237 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_a56943c6-67cc-4aee-a3ed-117abd7e5948/sv-benchmarks/c/loops/nec11.c[317,330] [2022-12-14 11:40:46,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:40:46,673 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:40:46,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46 WrapperNode [2022-12-14 11:40:46,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:40:46,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:40:46,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:40:46,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:40:46,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,697 INFO L138 Inliner]: procedures = 13, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-12-14 11:40:46,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:40:46,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:40:46,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:40:46,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:40:46,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,710 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:40:46,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:40:46,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:40:46,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:40:46,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:40:46,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:46,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:40:46,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:40:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:40:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:40:46,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:40:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:40:46,816 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:40:46,817 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:40:46,896 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:40:46,925 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:40:46,925 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 11:40:46,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:46 BoogieIcfgContainer [2022-12-14 11:40:46,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:40:46,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:40:46,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:40:46,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:40:46,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:40:46" (1/3) ... [2022-12-14 11:40:46,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437c414b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:40:46, skipping insertion in model container [2022-12-14 11:40:46,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (2/3) ... [2022-12-14 11:40:46,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437c414b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:40:46, skipping insertion in model container [2022-12-14 11:40:46,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:46" (3/3) ... [2022-12-14 11:40:46,938 INFO L112 eAbstractionObserver]: Analyzing ICFG nec11.c [2022-12-14 11:40:46,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:40:46,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 11:40:47,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:40:47,015 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;@178057c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:40:47,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 11:40:47,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 4 states have (on average 1.75) internal successors, (7), 6 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) [2022-12-14 11:40:47,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 11:40:47,026 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:47,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 11:40:47,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 11:40:47,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:47,032 INFO L85 PathProgramCache]: Analyzing trace with hash 70730, now seen corresponding path program 1 times [2022-12-14 11:40:47,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:47,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846587027] [2022-12-14 11:40:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:47,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:47,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:47,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846587027] [2022-12-14 11:40:47,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846587027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:47,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:40:47,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:40:47,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348740426] [2022-12-14 11:40:47,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:47,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:40:47,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:47,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:40:47,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:40:47,336 INFO L87 Difference]: Start difference. First operand has 7 states, 4 states have (on average 1.75) internal successors, (7), 6 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) 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) [2022-12-14 11:40:47,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:47,383 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-12-14 11:40:47,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:40:47,385 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 [2022-12-14 11:40:47,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:47,393 INFO L225 Difference]: With dead ends: 13 [2022-12-14 11:40:47,393 INFO L226 Difference]: Without dead ends: 9 [2022-12-14 11:40:47,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:40:47,399 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:47,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:40:47,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-12-14 11:40:47,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-12-14 11:40:47,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) [2022-12-14 11:40:47,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 11:40:47,433 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2022-12-14 11:40:47,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:47,434 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 11:40:47,434 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) [2022-12-14 11:40:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 11:40:47,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 11:40:47,435 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:47,435 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 11:40:47,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:40:47,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 11:40:47,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:47,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2107169901, now seen corresponding path program 1 times [2022-12-14 11:40:47,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:47,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132699677] [2022-12-14 11:40:47,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:47,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:47,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:47,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:47,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132699677] [2022-12-14 11:40:47,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132699677] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:40:47,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238452720] [2022-12-14 11:40:47,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:47,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:47,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:47,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:40:47,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:40:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:47,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 11:40:47,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:47,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:40:47,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:47,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238452720] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 11:40:47,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:40:47,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 13 [2022-12-14 11:40:47,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762924238] [2022-12-14 11:40:47,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:47,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:40:47,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:47,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:40:47,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-12-14 11:40:47,797 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2022-12-14 11:40:47,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:47,818 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-12-14 11:40:47,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:40:47,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 [2022-12-14 11:40:47,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:47,819 INFO L225 Difference]: With dead ends: 9 [2022-12-14 11:40:47,819 INFO L226 Difference]: Without dead ends: 8 [2022-12-14 11:40:47,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-12-14 11:40:47,821 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:47,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:40:47,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-12-14 11:40:47,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-12-14 11:40:47,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-12-14 11:40:47,823 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-12-14 11:40:47,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:47,824 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-12-14 11:40:47,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2022-12-14 11:40:47,824 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-12-14 11:40:47,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 11:40:47,824 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:47,824 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-12-14 11:40:47,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:40:48,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:48,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 11:40:48,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:48,027 INFO L85 PathProgramCache]: Analyzing trace with hash 897757543, now seen corresponding path program 1 times [2022-12-14 11:40:48,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:48,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486460484] [2022-12-14 11:40:48,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:48,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:48,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:48,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486460484] [2022-12-14 11:40:48,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486460484] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:40:48,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606094099] [2022-12-14 11:40:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:48,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:48,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:48,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:40:48,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:40:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:48,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 11:40:48,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:48,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:40:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:48,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606094099] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:40:48,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2025549452] [2022-12-14 11:40:48,343 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 11:40:48,343 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:40:48,346 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:40:48,350 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:40:48,350 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:40:48,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:40:48,495 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:40:48,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 249 treesize of output 255 [2022-12-14 11:40:48,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:40:48,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:40:48,663 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:40:48,756 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '158#(and (not (= (mod |ULTIMATE.start_main_~c~0#1| 256) 0)) (= |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_#t~post5#1|) (= (select |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~len~0#1|) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (< 2147483646 |ULTIMATE.start_main_#t~post5#1|) (= |#NULL.base| 0))' at error location [2022-12-14 11:40:48,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:40:48,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:40:48,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-12-14 11:40:48,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459711700] [2022-12-14 11:40:48,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:40:48,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 11:40:48,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:48,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 11:40:48,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-12-14 11:40:48,758 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:48,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:48,813 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-12-14 11:40:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 11:40:48,814 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 11:40:48,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:48,815 INFO L225 Difference]: With dead ends: 18 [2022-12-14 11:40:48,815 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 11:40:48,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-12-14 11:40:48,817 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 7 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:48,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:40:48,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 11:40:48,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 11:40:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-12-14 11:40:48,821 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2022-12-14 11:40:48,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:48,821 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-12-14 11:40:48,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:48,821 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-12-14 11:40:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 11:40:48,822 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:48,822 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1] [2022-12-14 11:40:48,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:40:49,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:49,024 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 11:40:49,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:49,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1090929386, now seen corresponding path program 2 times [2022-12-14 11:40:49,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:40:49,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684690768] [2022-12-14 11:40:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:49,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:40:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:49,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:40:49,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684690768] [2022-12-14 11:40:49,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684690768] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:40:49,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943277358] [2022-12-14 11:40:49,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:40:49,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:49,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:49,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:40:49,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:40:49,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 11:40:49,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:40:49,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 11:40:49,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:40:49,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:40:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:49,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943277358] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:40:49,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2083390153] [2022-12-14 11:40:49,566 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 11:40:49,566 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:40:49,566 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:40:49,567 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:40:49,567 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:40:49,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:40:49,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:40:49,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 251 treesize of output 253 [2022-12-14 11:40:49,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:40:49,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:40:49,723 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:40:49,890 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '329#(and (not (= (mod |ULTIMATE.start_main_~c~0#1| 256) 0)) (= |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_#t~post5#1|) (= (select |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~len~0#1|) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (< 2147483646 |ULTIMATE.start_main_#t~post5#1|) (= |#NULL.base| 0))' at error location [2022-12-14 11:40:49,890 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:40:49,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:40:49,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 23 [2022-12-14 11:40:49,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148311226] [2022-12-14 11:40:49,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:40:49,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 11:40:49,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:40:49,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 11:40:49,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2022-12-14 11:40:49,893 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:49,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:49,953 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-12-14 11:40:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 11:40:49,953 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 11:40:49,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:49,953 INFO L225 Difference]: With dead ends: 17 [2022-12-14 11:40:49,953 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 11:40:49,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=738, Unknown=0, NotChecked=0, Total=992 [2022-12-14 11:40:49,954 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:49,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:40:49,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 11:40:49,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 11:40:49,956 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) [2022-12-14 11:40:49,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 11:40:49,956 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-12-14 11:40:49,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:49,956 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 11:40:49,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:49,956 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 11:40:49,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 11:40:49,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 11:40:49,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 11:40:49,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:40:50,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:40:50,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 11:40:50,238 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2022-12-14 11:40:50,239 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 11:40:50,240 INFO L895 garLoopResultBuilder]: At program point L21-2(lines 21 29) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~len~0#1| 4) (< 0 (+ |ULTIMATE.start_main_~len~0#1| 2147483650))) [2022-12-14 11:40:50,240 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 11:40:50,241 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2022-12-14 11:40:50,241 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-12-14 11:40:50,241 INFO L899 garLoopResultBuilder]: For program point L28-1(line 28) no Hoare annotation was computed. [2022-12-14 11:40:50,250 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-12-14 11:40:50,255 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:40:50,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:40:50 BoogieIcfgContainer [2022-12-14 11:40:50,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:40:50,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:40:50,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:40:50,279 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:40:50,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:46" (3/4) ... [2022-12-14 11:40:50,282 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 11:40:50,291 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-12-14 11:40:50,291 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-12-14 11:40:50,291 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 11:40:50,292 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 11:40:50,292 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 11:40:50,314 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 11:40:50,314 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:40:50,314 INFO L158 Benchmark]: Toolchain (without parser) took 3793.40ms. Allocated memory was 123.7MB in the beginning and 165.7MB in the end (delta: 41.9MB). Free memory was 91.8MB in the beginning and 70.9MB in the end (delta: 20.9MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. [2022-12-14 11:40:50,314 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 123.7MB. Free memory was 97.0MB in the beginning and 97.0MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:40:50,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 151.98ms. Allocated memory is still 123.7MB. Free memory was 91.8MB in the beginning and 81.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 11:40:50,315 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.01ms. Allocated memory is still 123.7MB. Free memory was 81.8MB in the beginning and 80.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:40:50,315 INFO L158 Benchmark]: Boogie Preprocessor took 14.06ms. Allocated memory is still 123.7MB. Free memory was 80.3MB in the beginning and 79.4MB in the end (delta: 892.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:40:50,315 INFO L158 Benchmark]: RCFGBuilder took 216.07ms. Allocated memory is still 123.7MB. Free memory was 79.4MB in the beginning and 68.1MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 11:40:50,316 INFO L158 Benchmark]: TraceAbstraction took 3346.92ms. Allocated memory was 123.7MB in the beginning and 165.7MB in the end (delta: 41.9MB). Free memory was 67.3MB in the beginning and 74.0MB in the end (delta: -6.7MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2022-12-14 11:40:50,316 INFO L158 Benchmark]: Witness Printer took 35.65ms. Allocated memory is still 165.7MB. Free memory was 74.0MB in the beginning and 70.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:40:50,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 123.7MB. Free memory was 97.0MB in the beginning and 97.0MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 151.98ms. Allocated memory is still 123.7MB. Free memory was 91.8MB in the beginning and 81.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.01ms. Allocated memory is still 123.7MB. Free memory was 81.8MB in the beginning and 80.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.06ms. Allocated memory is still 123.7MB. Free memory was 80.3MB in the beginning and 79.4MB in the end (delta: 892.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 216.07ms. Allocated memory is still 123.7MB. Free memory was 79.4MB in the beginning and 68.1MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3346.92ms. Allocated memory was 123.7MB in the beginning and 165.7MB in the end (delta: 41.9MB). Free memory was 67.3MB in the beginning and 74.0MB in the end (delta: -6.7MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. * Witness Printer took 35.65ms. Allocated memory is still 165.7MB. Free memory was 74.0MB in the beginning and 70.9MB in the end (delta: 3.1MB). 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: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: 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, 7 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 108 IncrementalHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 3 mSDtfsCounter, 108 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, InterpolantAutomatonStates: 29, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 5 NumberOfFragments, 9 HoareAnnotationTreeSize, 1 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 260 SizeOfPredicates, 9 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 4/105 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: len <= 4 && 0 < len + 2147483650 RESULT: Ultimate proved your program to be correct! [2022-12-14 11:40:50,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a56943c6-67cc-4aee-a3ed-117abd7e5948/bin/utaipan-gh47qXpMRh/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