./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c -s /tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:56:07,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:56:07,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:56:07,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:56:07,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:56:07,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:56:07,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:56:07,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:56:07,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:56:07,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:56:07,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:56:07,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:56:07,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:07,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:07,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:07,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:07,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:07,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:07,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:07,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:07,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:07,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:07,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:07,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:07,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:07,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:07,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:07,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:07,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:07,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:07,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:07,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:07,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:07,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:07,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:07,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:07,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:07,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:07,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:07,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:07,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:07,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-25 08:56:07,755 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:07,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:07,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:07,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:07,757 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:07,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:07,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:56:07,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:56:07,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:07,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:56:07,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:56:07,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:56:07,758 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-25 08:56:07,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:07,759 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:07,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:56:07,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:07,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:07,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:56:07,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:56:07,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:56:07,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:07,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:56:07,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:56:07,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:56:07,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:56:07,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:56:07,761 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer 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 -> Automizer 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 -> 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 [2019-11-25 08:56:07,895 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:07,904 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:07,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:07,908 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:07,908 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:07,909 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-25 08:56:07,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer/data/4c4f0a8d5/328d844f25a64c798ac3f137754c651d/FLAG5f873b8e8 [2019-11-25 08:56:08,318 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:08,319 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-25 08:56:08,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer/data/4c4f0a8d5/328d844f25a64c798ac3f137754c651d/FLAG5f873b8e8 [2019-11-25 08:56:08,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer/data/4c4f0a8d5/328d844f25a64c798ac3f137754c651d [2019-11-25 08:56:08,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:08,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:08,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:08,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:08,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:08,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:08" (1/1) ... [2019-11-25 08:56:08,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187484b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:08, skipping insertion in model container [2019-11-25 08:56:08,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:08" (1/1) ... [2019-11-25 08:56:08,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:08,362 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:08,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:08,516 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:08,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:08,652 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:08,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:08 WrapperNode [2019-11-25 08:56:08,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:08,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:08,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:08,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:08,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:08" (1/1) ... [2019-11-25 08:56:08,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:08" (1/1) ... [2019-11-25 08:56:08,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:08,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:08,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:08,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:08,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:08" (1/1) ... [2019-11-25 08:56:08,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:08" (1/1) ... [2019-11-25 08:56:08,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:08" (1/1) ... [2019-11-25 08:56:08,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:08" (1/1) ... [2019-11-25 08:56:08,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:08" (1/1) ... [2019-11-25 08:56:08,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:08" (1/1) ... [2019-11-25 08:56:08,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:08" (1/1) ... [2019-11-25 08:56:08,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:08,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:08,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:08,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:08,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:56:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:08,963 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:08,964 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:56:08,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:08 BoogieIcfgContainer [2019-11-25 08:56:08,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:08,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:56:08,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:56:08,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:56:08,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:56:08" (1/3) ... [2019-11-25 08:56:08,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c70abae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:08, skipping insertion in model container [2019-11-25 08:56:08,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:08" (2/3) ... [2019-11-25 08:56:08,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c70abae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:08, skipping insertion in model container [2019-11-25 08:56:08,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:08" (3/3) ... [2019-11-25 08:56:08,976 INFO L109 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-25 08:56:08,985 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:56:08,991 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-25 08:56:09,002 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-25 08:56:09,026 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:56:09,027 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:56:09,027 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:56:09,027 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:09,027 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:09,027 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:56:09,027 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:09,028 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:56:09,044 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-25 08:56:09,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-25 08:56:09,049 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:09,050 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-25 08:56:09,050 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:09,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:09,056 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2019-11-25 08:56:09,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:09,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219115704] [2019-11-25 08:56:09,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:09,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219115704] [2019-11-25 08:56:09,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:09,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:56:09,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833117471] [2019-11-25 08:56:09,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:56:09,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:09,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:56:09,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:56:09,295 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2019-11-25 08:56:09,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:09,369 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-11-25 08:56:09,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:56:09,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2019-11-25 08:56:09,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:09,379 INFO L225 Difference]: With dead ends: 23 [2019-11-25 08:56:09,379 INFO L226 Difference]: Without dead ends: 14 [2019-11-25 08:56:09,382 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:56:09,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-25 08:56:09,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-25 08:56:09,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-25 08:56:09,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-25 08:56:09,413 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 4 [2019-11-25 08:56:09,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:09,413 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-25 08:56:09,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:56:09,413 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-25 08:56:09,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-25 08:56:09,414 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:09,414 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-25 08:56:09,414 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:09,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:09,415 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2019-11-25 08:56:09,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:09,416 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171243787] [2019-11-25 08:56:09,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:09,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171243787] [2019-11-25 08:56:09,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:09,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-25 08:56:09,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066160966] [2019-11-25 08:56:09,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:56:09,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:09,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:56:09,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:56:09,449 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2019-11-25 08:56:09,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:09,502 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2019-11-25 08:56:09,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:56:09,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-25 08:56:09,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:09,503 INFO L225 Difference]: With dead ends: 20 [2019-11-25 08:56:09,503 INFO L226 Difference]: Without dead ends: 19 [2019-11-25 08:56:09,504 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:56:09,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-25 08:56:09,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2019-11-25 08:56:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:56:09,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-25 08:56:09,509 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 4 [2019-11-25 08:56:09,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:09,509 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-25 08:56:09,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:56:09,510 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-25 08:56:09,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-25 08:56:09,510 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:09,510 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-25 08:56:09,511 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:09,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:09,511 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2019-11-25 08:56:09,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:09,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515840691] [2019-11-25 08:56:09,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:09,530 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515840691] [2019-11-25 08:56:09,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:09,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-25 08:56:09,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102740820] [2019-11-25 08:56:09,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:56:09,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:09,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:56:09,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:56:09,532 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 3 states. [2019-11-25 08:56:09,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:09,568 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2019-11-25 08:56:09,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:56:09,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-25 08:56:09,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:09,570 INFO L225 Difference]: With dead ends: 18 [2019-11-25 08:56:09,570 INFO L226 Difference]: Without dead ends: 17 [2019-11-25 08:56:09,570 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:56:09,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-25 08:56:09,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-25 08:56:09,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-25 08:56:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-25 08:56:09,574 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 5 [2019-11-25 08:56:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:09,574 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-25 08:56:09,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:56:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-25 08:56:09,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-25 08:56:09,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:09,575 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-25 08:56:09,575 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:09,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:09,575 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2019-11-25 08:56:09,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:09,576 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398683759] [2019-11-25 08:56:09,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:09,598 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398683759] [2019-11-25 08:56:09,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:09,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:56:09,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678324474] [2019-11-25 08:56:09,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:56:09,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:09,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:56:09,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:56:09,599 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-11-25 08:56:09,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:09,655 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2019-11-25 08:56:09,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:56:09,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-25 08:56:09,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:09,657 INFO L225 Difference]: With dead ends: 17 [2019-11-25 08:56:09,657 INFO L226 Difference]: Without dead ends: 16 [2019-11-25 08:56:09,657 INFO L630 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 [2019-11-25 08:56:09,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-25 08:56:09,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-25 08:56:09,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-25 08:56:09,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-25 08:56:09,662 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 5 [2019-11-25 08:56:09,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:09,662 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-25 08:56:09,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:56:09,663 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-25 08:56:09,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:56:09,663 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:09,664 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2019-11-25 08:56:09,664 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:09,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:09,664 INFO L82 PathProgramCache]: Analyzing trace with hash 784501312, now seen corresponding path program 1 times [2019-11-25 08:56:09,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:09,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232439277] [2019-11-25 08:56:09,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:09,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232439277] [2019-11-25 08:56:09,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535305263] [2019-11-25 08:56:09,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:09,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:56:09,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:09,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:56:09,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:09,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2019-11-25 08:56:09,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770899807] [2019-11-25 08:56:09,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:56:09,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:09,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:56:09,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:56:09,824 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 7 states. [2019-11-25 08:56:09,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:09,878 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2019-11-25 08:56:09,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:56:09,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-11-25 08:56:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:09,880 INFO L225 Difference]: With dead ends: 16 [2019-11-25 08:56:09,880 INFO L226 Difference]: Without dead ends: 15 [2019-11-25 08:56:09,881 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:56:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-25 08:56:09,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2019-11-25 08:56:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:56:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-25 08:56:09,884 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2019-11-25 08:56:09,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:09,884 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-25 08:56:09,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:56:09,885 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-25 08:56:09,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:56:09,887 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:09,887 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:10,088 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:10,088 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:10,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:10,089 INFO L82 PathProgramCache]: Analyzing trace with hash 784501120, now seen corresponding path program 1 times [2019-11-25 08:56:10,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:10,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768591284] [2019-11-25 08:56:10,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:10,116 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768591284] [2019-11-25 08:56:10,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:10,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:56:10,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725131670] [2019-11-25 08:56:10,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:56:10,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:10,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:56:10,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:56:10,118 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2019-11-25 08:56:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:10,168 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2019-11-25 08:56:10,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:56:10,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-25 08:56:10,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:10,170 INFO L225 Difference]: With dead ends: 21 [2019-11-25 08:56:10,170 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:56:10,170 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:56:10,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:56:10,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:56:10,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:56:10,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:56:10,171 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-25 08:56:10,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:10,171 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:56:10,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:56:10,172 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:56:10,172 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:56:10,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:56:10,262 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-11-25 08:56:10,262 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:56:10,262 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-11-25 08:56:10,262 INFO L444 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-25 08:56:10,262 INFO L444 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-11-25 08:56:10,262 INFO L444 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-25 08:56:10,263 INFO L444 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-11-25 08:56:10,263 INFO L444 ceAbstractionStarter]: For program point L17-2(lines 17 23) no Hoare annotation was computed. [2019-11-25 08:56:10,263 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-11-25 08:56:10,263 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-11-25 08:56:10,263 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:56:10,263 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:56:10,263 INFO L440 ceAbstractionStarter]: At program point L24(lines 13 25) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~K~0 1) ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~K~0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 2147483646)) [2019-11-25 08:56:10,264 INFO L444 ceAbstractionStarter]: For program point L18(lines 18 22) no Hoare annotation was computed. [2019-11-25 08:56:10,264 INFO L440 ceAbstractionStarter]: At program point L18-2(lines 17 23) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (<= ULTIMATE.start_main_~K~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~K~0 2147483648))) [2019-11-25 08:56:10,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:56:10 BoogieIcfgContainer [2019-11-25 08:56:10,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:56:10,284 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:56:10,284 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:56:10,284 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:56:10,285 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:08" (3/4) ... [2019-11-25 08:56:10,288 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:56:10,298 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:56:10,298 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:56:10,350 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_265cc331-38a8-4186-807d-9acbd2e9a04e/bin/uautomizer/witness.graphml [2019-11-25 08:56:10,351 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:56:10,353 INFO L168 Benchmark]: Toolchain (without parser) took 2017.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -127.0 MB). Peak memory consumption was 60.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:10,353 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:10,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.2 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -233.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:10,354 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:10,354 INFO L168 Benchmark]: Boogie Preprocessor took 23.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:10,355 INFO L168 Benchmark]: RCFGBuilder took 253.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:10,355 INFO L168 Benchmark]: TraceAbstraction took 1317.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 91.2 MB). Peak memory consumption was 91.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:10,356 INFO L168 Benchmark]: Witness Printer took 66.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:10,358 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 317.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.2 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -233.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 253.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1317.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 91.2 MB). Peak memory consumption was 91.2 MB. Max. memory is 11.5 GB. * Witness Printer took 66.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((x <= 2147483647 && 0 <= x + 2147483648) && K <= 2147483647) && 0 <= K + 2147483648 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (K + 1 <= x || K == x) || x <= 2147483646 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 53 SDslu, 3 SDs, 0 SdLazy, 101 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=2, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 29 HoareAnnotationTreeSize, 2 FomulaSimplifications, 117 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 784 SizeOfPredicates, 1 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...