./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 95f92d67113368ce9163571f81d85414539d558535b51b4568b3b416ae740375 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:04:32,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:04:32,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:04:32,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:04:32,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:04:32,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:04:32,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:04:32,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:04:32,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:04:32,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:04:32,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:04:32,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:04:32,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:04:32,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:04:32,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:04:32,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:04:32,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:04:32,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:04:32,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:04:32,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:04:32,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:04:32,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:04:32,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:04:32,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:04:32,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:04:32,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:04:32,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:04:32,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:04:32,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:04:32,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:04:32,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:04:32,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:04:32,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:04:32,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:04:32,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:04:32,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:04:32,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:04:32,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:04:32,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:04:32,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:04:32,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:04:32,473 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-07 01:04:32,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:04:32,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:04:32,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:04:32,504 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:04:32,504 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:04:32,504 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:04:32,505 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:04:32,505 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:04:32,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:04:32,505 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:04:32,506 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:04:32,506 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:04:32,506 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:04:32,506 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:04:32,507 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:04:32,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:04:32,508 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:04:32,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:04:32,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:04:32,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:04:32,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:04:32,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:04:32,509 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-07 01:04:32,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:04:32,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:04:32,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:04:32,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:04:32,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:04:32,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:04:32,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:04:32,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:04:32,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:04:32,512 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:04:32,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:04:32,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:04:32,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:04:32,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:04:32,513 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f92d67113368ce9163571f81d85414539d558535b51b4568b3b416ae740375 [2021-11-07 01:04:32,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:04:32,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:04:32,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:04:32,935 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:04:32,936 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:04:32,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2021-11-07 01:04:33,033 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/data/286ed9c9e/4d0fdf9070914981a1c8a06933583d23/FLAG3c5c94290 [2021-11-07 01:04:33,672 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:04:33,673 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2021-11-07 01:04:33,682 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/data/286ed9c9e/4d0fdf9070914981a1c8a06933583d23/FLAG3c5c94290 [2021-11-07 01:04:34,060 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/data/286ed9c9e/4d0fdf9070914981a1c8a06933583d23 [2021-11-07 01:04:34,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:04:34,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:04:34,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:04:34,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:04:34,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:04:34,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:34" (1/1) ... [2021-11-07 01:04:34,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3151826b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:34, skipping insertion in model container [2021-11-07 01:04:34,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:34" (1/1) ... [2021-11-07 01:04:34,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:04:34,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:04:34,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:04:34,303 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:04:34,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:04:34,353 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:04:34,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:34 WrapperNode [2021-11-07 01:04:34,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:04:34,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:04:34,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:04:34,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:04:34,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:34" (1/1) ... [2021-11-07 01:04:34,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:34" (1/1) ... [2021-11-07 01:04:34,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:04:34,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:04:34,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:04:34,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:04:34,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:34" (1/1) ... [2021-11-07 01:04:34,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:34" (1/1) ... [2021-11-07 01:04:34,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:34" (1/1) ... [2021-11-07 01:04:34,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:34" (1/1) ... [2021-11-07 01:04:34,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:34" (1/1) ... [2021-11-07 01:04:34,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:34" (1/1) ... [2021-11-07 01:04:34,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:34" (1/1) ... [2021-11-07 01:04:34,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:04:34,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:04:34,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:04:34,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:04:34,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:34" (1/1) ... [2021-11-07 01:04:34,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:04:34,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:04:34,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:04:34,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:04:34,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:04:34,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:04:34,828 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:04:34,839 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-07 01:04:34,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:34 BoogieIcfgContainer [2021-11-07 01:04:34,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:04:34,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:04:34,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:04:34,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:04:34,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:04:34" (1/3) ... [2021-11-07 01:04:34,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5b4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:34, skipping insertion in model container [2021-11-07 01:04:34,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:34" (2/3) ... [2021-11-07 01:04:34,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5b4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:34, skipping insertion in model container [2021-11-07 01:04:34,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:34" (3/3) ... [2021-11-07 01:04:34,855 INFO L111 eAbstractionObserver]: Analyzing ICFG NonTerminationSimple7.c [2021-11-07 01:04:34,862 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:04:34,863 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 01:04:34,938 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:04:34,950 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:04:34,950 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 01:04:34,968 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:34,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 01:04:34,974 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:34,975 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 01:04:34,976 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-07 01:04:34,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:34,983 INFO L85 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2021-11-07 01:04:34,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:04:34,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68691865] [2021-11-07 01:04:34,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:34,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:04:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:35,169 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:04:35,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68691865] [2021-11-07 01:04:35,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68691865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:35,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:35,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:04:35,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198418706] [2021-11-07 01:04:35,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:04:35,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:04:35,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:04:35,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:04:35,200 INFO L87 Difference]: Start difference. First operand has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:35,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:35,322 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-11-07 01:04:35,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:04:35,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-07 01:04:35,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:35,335 INFO L225 Difference]: With dead ends: 14 [2021-11-07 01:04:35,343 INFO L226 Difference]: Without dead ends: 9 [2021-11-07 01:04:35,346 INFO L786 BasicCegarLoop]: 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 [2021-11-07 01:04:35,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-07 01:04:35,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-07 01:04:35,407 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) [2021-11-07 01:04:35,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-07 01:04:35,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2021-11-07 01:04:35,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:35,411 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-07 01:04:35,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:35,412 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-07 01:04:35,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:04:35,413 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:35,413 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:04:35,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:04:35,414 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-07 01:04:35,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:35,416 INFO L85 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2021-11-07 01:04:35,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:04:35,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193073474] [2021-11-07 01:04:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:35,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:04:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:35,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:04:35,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193073474] [2021-11-07 01:04:35,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193073474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:35,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:35,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:04:35,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955797308] [2021-11-07 01:04:35,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:04:35,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:04:35,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:04:35,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:04:35,471 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:35,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:35,515 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-11-07 01:04:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:04:35,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-11-07 01:04:35,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:35,517 INFO L225 Difference]: With dead ends: 9 [2021-11-07 01:04:35,518 INFO L226 Difference]: Without dead ends: 8 [2021-11-07 01:04:35,519 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:04:35,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-07 01:04:35,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-07 01:04:35,522 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) [2021-11-07 01:04:35,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-07 01:04:35,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2021-11-07 01:04:35,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:35,524 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-07 01:04:35,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:35,524 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-07 01:04:35,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:04:35,525 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:35,525 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-11-07 01:04:35,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 01:04:35,526 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-07 01:04:35,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:35,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1537667284, now seen corresponding path program 1 times [2021-11-07 01:04:35,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:04:35,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284172320] [2021-11-07 01:04:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:35,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:04:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:35,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:04:35,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284172320] [2021-11-07 01:04:35,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284172320] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:04:35,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528547861] [2021-11-07 01:04:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:35,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:04:35,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:04:35,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:04:35,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:04:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:35,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:04:35,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:35,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:35,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528547861] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:04:35,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:04:35,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2021-11-07 01:04:35,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812001617] [2021-11-07 01:04:35,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:04:35,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:04:35,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:04:35,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:04:35,984 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 5 states, 4 states have (on average 1.75) 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) [2021-11-07 01:04:35,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:35,999 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-11-07 01:04:35,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:04:36,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) 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 [2021-11-07 01:04:36,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:36,000 INFO L225 Difference]: With dead ends: 8 [2021-11-07 01:04:36,001 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:04:36,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:04:36,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:04:36,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:04:36,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:04:36,003 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-11-07 01:04:36,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:36,003 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:04:36,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) 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) [2021-11-07 01:04:36,004 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:04:36,004 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:04:36,010 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-07 01:04:36,011 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-07 01:04:36,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:36,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:04:36,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:04:36,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:04:36,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:04:36,310 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-11-07 01:04:36,313 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:04:36,314 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-11-07 01:04:36,314 INFO L857 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-11-07 01:04:36,316 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 19) no Hoare annotation was computed. [2021-11-07 01:04:36,317 INFO L853 garLoopResultBuilder]: At program point L15-1(lines 15 19) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-11-07 01:04:36,317 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-11-07 01:04:36,318 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:04:36,318 INFO L853 garLoopResultBuilder]: At program point L16-2(lines 16 18) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~c~0 0) (<= ULTIMATE.start_main_~x~0 2147483647)) [2021-11-07 01:04:36,323 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 01:04:36,326 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:04:36,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:04:36 BoogieIcfgContainer [2021-11-07 01:04:36,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:04:36,346 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:04:36,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:04:36,347 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:04:36,348 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:34" (3/4) ... [2021-11-07 01:04:36,352 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:04:36,361 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-07 01:04:36,362 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 01:04:36,362 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:04:36,402 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:04:36,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:04:36,404 INFO L168 Benchmark]: Toolchain (without parser) took 2338.43 ms. Allocated memory is still 127.9 MB. Free memory was 89.4 MB in the beginning and 51.1 MB in the end (delta: 38.4 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:04:36,405 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 127.9 MB. Free memory is still 106.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:04:36,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.22 ms. Allocated memory is still 127.9 MB. Free memory was 89.3 MB in the beginning and 104.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:04:36,406 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.22 ms. Allocated memory is still 127.9 MB. Free memory was 104.2 MB in the beginning and 102.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:04:36,407 INFO L168 Benchmark]: Boogie Preprocessor took 37.50 ms. Allocated memory is still 127.9 MB. Free memory was 102.9 MB in the beginning and 101.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:04:36,408 INFO L168 Benchmark]: RCFGBuilder took 407.88 ms. Allocated memory is still 127.9 MB. Free memory was 101.8 MB in the beginning and 93.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:04:36,409 INFO L168 Benchmark]: TraceAbstraction took 1501.31 ms. Allocated memory is still 127.9 MB. Free memory was 93.1 MB in the beginning and 53.6 MB in the end (delta: 39.5 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:04:36,410 INFO L168 Benchmark]: Witness Printer took 55.68 ms. Allocated memory is still 127.9 MB. Free memory was 53.2 MB in the beginning and 51.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:04:36,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 127.9 MB. Free memory is still 106.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.22 ms. Allocated memory is still 127.9 MB. Free memory was 89.3 MB in the beginning and 104.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.22 ms. Allocated memory is still 127.9 MB. Free memory was 104.2 MB in the beginning and 102.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.50 ms. Allocated memory is still 127.9 MB. Free memory was 102.9 MB in the beginning and 101.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 407.88 ms. Allocated memory is still 127.9 MB. Free memory was 101.8 MB in the beginning and 93.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1501.31 ms. Allocated memory is still 127.9 MB. Free memory was 93.1 MB in the beginning and 53.6 MB in the end (delta: 39.5 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * Witness Printer took 55.68 ms. Allocated memory is still 127.9 MB. Free memory was 53.2 MB in the beginning and 51.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: 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, 9 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 23 SDslu, 1 SDs, 0 SdLazy, 23 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 31 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 137 SizeOfPredicates, 1 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/6 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: 16]: Loop Invariant Derived loop invariant: (0 <= c && c <= 0) && x <= 2147483647 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-11-07 01:04:36,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f3339d-6d2a-4fd6-a08b-7af6e81b9ae8/bin/utaipan-UUZaoUuFF8/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