./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/genady_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/genady_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan --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 6938b5c805400363799492c040263d9022406929 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 14:50:21,771 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 14:50:21,772 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 14:50:21,778 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 14:50:21,778 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 14:50:21,779 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 14:50:21,780 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 14:50:21,780 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 14:50:21,781 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 14:50:21,782 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 14:50:21,782 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 14:50:21,782 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 14:50:21,782 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 14:50:21,783 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 14:50:21,784 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 14:50:21,784 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 14:50:21,784 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 14:50:21,785 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 14:50:21,786 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 14:50:21,787 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 14:50:21,787 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 14:50:21,788 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 14:50:21,789 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 14:50:21,789 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 14:50:21,789 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 14:50:21,789 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 14:50:21,790 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 14:50:21,790 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 14:50:21,791 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 14:50:21,791 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 14:50:21,791 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 14:50:21,792 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 14:50:21,792 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 14:50:21,792 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 14:50:21,792 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 14:50:21,792 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 14:50:21,793 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-12-02 14:50:21,800 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 14:50:21,800 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 14:50:21,800 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 14:50:21,800 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 14:50:21,800 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 14:50:21,801 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 14:50:21,801 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 14:50:21,801 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 14:50:21,801 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 14:50:21,801 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 14:50:21,801 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 14:50:21,801 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 14:50:21,801 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 14:50:21,802 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 14:50:21,802 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 14:50:21,802 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 14:50:21,802 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 14:50:21,802 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 14:50:21,802 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 14:50:21,802 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 14:50:21,802 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-02 14:50:21,802 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 14:50:21,802 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 14:50:21,803 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 14:50:21,803 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 14:50:21,803 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 14:50:21,803 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 14:50:21,803 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 14:50:21,803 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 14:50:21,803 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 14:50:21,803 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 14:50:21,803 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 14:50:21,803 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 14:50:21,803 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 14:50:21,803 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 14:50:21,804 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan 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 -> 6938b5c805400363799492c040263d9022406929 [2018-12-02 14:50:21,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 14:50:21,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 14:50:21,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 14:50:21,830 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 14:50:21,830 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 14:50:21,830 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/genady_true-termination_true-no-overflow.c [2018-12-02 14:50:21,864 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/data/b70af6a78/f7ea2742d78746248d8cabdf8e34b6fe/FLAGd9b8a1690 [2018-12-02 14:50:22,220 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 14:50:22,220 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/sv-benchmarks/c/termination-crafted-lit/genady_true-termination_true-no-overflow.c [2018-12-02 14:50:22,224 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/data/b70af6a78/f7ea2742d78746248d8cabdf8e34b6fe/FLAGd9b8a1690 [2018-12-02 14:50:22,597 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/data/b70af6a78/f7ea2742d78746248d8cabdf8e34b6fe [2018-12-02 14:50:22,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 14:50:22,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 14:50:22,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 14:50:22,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 14:50:22,605 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 14:50:22,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:50:22" (1/1) ... [2018-12-02 14:50:22,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cecaa61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:50:22, skipping insertion in model container [2018-12-02 14:50:22,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:50:22" (1/1) ... [2018-12-02 14:50:22,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 14:50:22,622 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 14:50:22,701 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 14:50:22,704 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 14:50:22,712 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 14:50:22,719 INFO L195 MainTranslator]: Completed translation [2018-12-02 14:50:22,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:50:22 WrapperNode [2018-12-02 14:50:22,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 14:50:22,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 14:50:22,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 14:50:22,720 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 14:50:22,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:50:22" (1/1) ... [2018-12-02 14:50:22,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:50:22" (1/1) ... [2018-12-02 14:50:22,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 14:50:22,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 14:50:22,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 14:50:22,732 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 14:50:22,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:50:22" (1/1) ... [2018-12-02 14:50:22,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:50:22" (1/1) ... [2018-12-02 14:50:22,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:50:22" (1/1) ... [2018-12-02 14:50:22,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:50:22" (1/1) ... [2018-12-02 14:50:22,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:50:22" (1/1) ... [2018-12-02 14:50:22,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:50:22" (1/1) ... [2018-12-02 14:50:22,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:50:22" (1/1) ... [2018-12-02 14:50:22,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 14:50:22,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 14:50:22,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 14:50:22,743 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 14:50:22,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:50:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/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 [2018-12-02 14:50:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 14:50:22,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 14:50:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 14:50:22,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 14:50:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 14:50:22,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 14:50:22,888 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 14:50:22,888 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 14:50:22,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:50:22 BoogieIcfgContainer [2018-12-02 14:50:22,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 14:50:22,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 14:50:22,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 14:50:22,891 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 14:50:22,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:50:22" (1/3) ... [2018-12-02 14:50:22,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27eca5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:50:22, skipping insertion in model container [2018-12-02 14:50:22,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:50:22" (2/3) ... [2018-12-02 14:50:22,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27eca5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:50:22, skipping insertion in model container [2018-12-02 14:50:22,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:50:22" (3/3) ... [2018-12-02 14:50:22,893 INFO L112 eAbstractionObserver]: Analyzing ICFG genady_true-termination_true-no-overflow.c [2018-12-02 14:50:22,899 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 14:50:22,903 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-02 14:50:22,913 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-02 14:50:22,931 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 14:50:22,931 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 14:50:22,931 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 14:50:22,931 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 14:50:22,931 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 14:50:22,931 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 14:50:22,931 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 14:50:22,931 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 14:50:22,941 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-12-02 14:50:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-02 14:50:22,945 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:50:22,945 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-12-02 14:50:22,947 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 14:50:22,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:22,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1775992520, now seen corresponding path program 1 times [2018-12-02 14:50:22,952 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:50:22,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:22,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:50:22,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:22,985 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:50:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:50:23,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 14:50:23,029 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:50:23,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 14:50:23,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 14:50:23,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 14:50:23,042 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2018-12-02 14:50:23,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:50:23,070 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-12-02 14:50:23,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 14:50:23,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-12-02 14:50:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:50:23,076 INFO L225 Difference]: With dead ends: 28 [2018-12-02 14:50:23,076 INFO L226 Difference]: Without dead ends: 17 [2018-12-02 14:50:23,078 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 14:50:23,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-02 14:50:23,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-02 14:50:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-02 14:50:23,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-12-02 14:50:23,099 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2018-12-02 14:50:23,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:50:23,099 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-12-02 14:50:23,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 14:50:23,100 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-12-02 14:50:23,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-02 14:50:23,100 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:50:23,100 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:50:23,100 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 14:50:23,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:23,101 INFO L82 PathProgramCache]: Analyzing trace with hash -778806686, now seen corresponding path program 1 times [2018-12-02 14:50:23,101 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:50:23,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:50:23,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,102 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:50:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:50:23,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 14:50:23,115 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:50:23,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 14:50:23,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 14:50:23,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 14:50:23,116 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2018-12-02 14:50:23,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:50:23,146 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-12-02 14:50:23,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 14:50:23,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-12-02 14:50:23,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:50:23,147 INFO L225 Difference]: With dead ends: 25 [2018-12-02 14:50:23,147 INFO L226 Difference]: Without dead ends: 24 [2018-12-02 14:50:23,148 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 14:50:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-02 14:50:23,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2018-12-02 14:50:23,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-02 14:50:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-12-02 14:50:23,150 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 7 [2018-12-02 14:50:23,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:50:23,151 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-12-02 14:50:23,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 14:50:23,151 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-12-02 14:50:23,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 14:50:23,151 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:50:23,151 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:50:23,151 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 14:50:23,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:23,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1108914236, now seen corresponding path program 1 times [2018-12-02 14:50:23,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:50:23,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:50:23,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,153 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:50:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:50:23,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 14:50:23,163 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:50:23,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 14:50:23,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 14:50:23,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 14:50:23,164 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 3 states. [2018-12-02 14:50:23,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:50:23,182 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-12-02 14:50:23,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 14:50:23,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-02 14:50:23,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:50:23,183 INFO L225 Difference]: With dead ends: 23 [2018-12-02 14:50:23,183 INFO L226 Difference]: Without dead ends: 22 [2018-12-02 14:50:23,183 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 14:50:23,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-02 14:50:23,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-12-02 14:50:23,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-02 14:50:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-12-02 14:50:23,186 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 9 [2018-12-02 14:50:23,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:50:23,186 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-12-02 14:50:23,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 14:50:23,186 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-12-02 14:50:23,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 14:50:23,186 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:50:23,186 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:50:23,187 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 14:50:23,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:23,187 INFO L82 PathProgramCache]: Analyzing trace with hash -16602897, now seen corresponding path program 1 times [2018-12-02 14:50:23,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:50:23,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:50:23,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,188 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:50:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:50:23,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 14:50:23,201 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:50:23,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 14:50:23,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 14:50:23,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 14:50:23,201 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states. [2018-12-02 14:50:23,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:50:23,211 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-12-02 14:50:23,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 14:50:23,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-02 14:50:23,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:50:23,212 INFO L225 Difference]: With dead ends: 21 [2018-12-02 14:50:23,212 INFO L226 Difference]: Without dead ends: 20 [2018-12-02 14:50:23,212 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 14:50:23,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-12-02 14:50:23,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-12-02 14:50:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-02 14:50:23,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-12-02 14:50:23,216 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2018-12-02 14:50:23,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:50:23,216 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-12-02 14:50:23,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 14:50:23,216 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-12-02 14:50:23,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-02 14:50:23,216 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:50:23,217 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:50:23,217 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 14:50:23,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:23,217 INFO L82 PathProgramCache]: Analyzing trace with hash -514689754, now seen corresponding path program 1 times [2018-12-02 14:50:23,217 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:50:23,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:50:23,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,219 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:50:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:50:23,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 14:50:23,236 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:50:23,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 14:50:23,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 14:50:23,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 14:50:23,237 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 3 states. [2018-12-02 14:50:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:50:23,245 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-12-02 14:50:23,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 14:50:23,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-02 14:50:23,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:50:23,245 INFO L225 Difference]: With dead ends: 20 [2018-12-02 14:50:23,246 INFO L226 Difference]: Without dead ends: 19 [2018-12-02 14:50:23,246 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 14:50:23,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-12-02 14:50:23,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-12-02 14:50:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-02 14:50:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-12-02 14:50:23,248 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 11 [2018-12-02 14:50:23,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:50:23,248 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-12-02 14:50:23,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 14:50:23,248 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-12-02 14:50:23,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-02 14:50:23,248 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:50:23,248 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:50:23,249 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 14:50:23,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:23,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1224486865, now seen corresponding path program 1 times [2018-12-02 14:50:23,249 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:50:23,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:50:23,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,250 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:50:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:50:23,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 14:50:23,261 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:50:23,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 14:50:23,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 14:50:23,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 14:50:23,261 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 3 states. [2018-12-02 14:50:23,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:50:23,284 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-12-02 14:50:23,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 14:50:23,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-02 14:50:23,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:50:23,284 INFO L225 Difference]: With dead ends: 23 [2018-12-02 14:50:23,284 INFO L226 Difference]: Without dead ends: 22 [2018-12-02 14:50:23,285 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 14:50:23,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-02 14:50:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-12-02 14:50:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-02 14:50:23,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-12-02 14:50:23,287 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2018-12-02 14:50:23,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:50:23,287 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-12-02 14:50:23,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 14:50:23,287 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-12-02 14:50:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-02 14:50:23,287 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:50:23,287 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:50:23,288 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 14:50:23,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:23,288 INFO L82 PathProgramCache]: Analyzing trace with hash -89160557, now seen corresponding path program 1 times [2018-12-02 14:50:23,288 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:50:23,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:50:23,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,289 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:50:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:50:23,309 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 14:50:23,309 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-12-02 14:50:23,310 INFO L205 CegarAbsIntRunner]: [0], [4], [10], [11], [12], [17], [19], [21], [23], [25], [31], [32], [33] [2018-12-02 14:50:23,331 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 14:50:23,331 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 14:50:23,433 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 14:50:23,433 INFO L272 AbstractInterpreter]: Visited 13 different actions 45 times. Merged at 8 different actions 30 times. Never widened. Performed 160 root evaluator evaluations with a maximum evaluation depth of 3. Performed 160 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-12-02 14:50:23,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:23,443 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 14:50:23,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:50:23,443 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 14:50:23,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:50:23,449 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 14:50:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:23,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:50:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,498 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 14:50:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-02 14:50:23,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2018-12-02 14:50:23,553 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 14:50:23,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 14:50:23,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 14:50:23,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-12-02 14:50:23,554 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 9 states. [2018-12-02 14:50:23,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:50:23,619 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-12-02 14:50:23,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 14:50:23,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2018-12-02 14:50:23,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:50:23,619 INFO L225 Difference]: With dead ends: 29 [2018-12-02 14:50:23,619 INFO L226 Difference]: Without dead ends: 28 [2018-12-02 14:50:23,620 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=186, Unknown=0, NotChecked=0, Total=306 [2018-12-02 14:50:23,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-02 14:50:23,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-12-02 14:50:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 14:50:23,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-12-02 14:50:23,622 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 14 [2018-12-02 14:50:23,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:50:23,622 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-12-02 14:50:23,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 14:50:23,622 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-12-02 14:50:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-02 14:50:23,623 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:50:23,623 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:50:23,623 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 14:50:23,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:23,623 INFO L82 PathProgramCache]: Analyzing trace with hash 216052149, now seen corresponding path program 1 times [2018-12-02 14:50:23,623 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:50:23,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:50:23,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,624 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:50:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:50:23,638 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 14:50:23,638 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-12-02 14:50:23,639 INFO L205 CegarAbsIntRunner]: [0], [4], [10], [12], [17], [18], [19], [21], [23], [25], [31], [32], [33] [2018-12-02 14:50:23,639 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 14:50:23,640 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 14:50:23,679 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 14:50:23,679 INFO L272 AbstractInterpreter]: Visited 13 different actions 45 times. Merged at 8 different actions 30 times. Never widened. Performed 160 root evaluator evaluations with a maximum evaluation depth of 3. Performed 160 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-12-02 14:50:23,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:23,682 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 14:50:23,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:50:23,682 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 14:50:23,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:50:23,689 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 14:50:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:23,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:50:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,695 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 14:50:23,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,728 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-02 14:50:23,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-12-02 14:50:23,729 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 14:50:23,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 14:50:23,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 14:50:23,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-02 14:50:23,729 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 4 states. [2018-12-02 14:50:23,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:50:23,743 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-12-02 14:50:23,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 14:50:23,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-12-02 14:50:23,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:50:23,744 INFO L225 Difference]: With dead ends: 28 [2018-12-02 14:50:23,744 INFO L226 Difference]: Without dead ends: 27 [2018-12-02 14:50:23,744 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-02 14:50:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-02 14:50:23,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-12-02 14:50:23,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-02 14:50:23,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-12-02 14:50:23,746 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 16 [2018-12-02 14:50:23,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:50:23,747 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-12-02 14:50:23,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 14:50:23,747 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-12-02 14:50:23,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 14:50:23,747 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:50:23,747 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:50:23,747 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 14:50:23,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:23,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1746355136, now seen corresponding path program 1 times [2018-12-02 14:50:23,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:50:23,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:50:23,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,749 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:50:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:50:23,765 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 14:50:23,765 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-12-02 14:50:23,765 INFO L205 CegarAbsIntRunner]: [0], [4], [10], [12], [17], [19], [21], [23], [24], [25], [31], [32], [33] [2018-12-02 14:50:23,766 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 14:50:23,766 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 14:50:23,795 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 14:50:23,795 INFO L272 AbstractInterpreter]: Visited 13 different actions 37 times. Merged at 7 different actions 21 times. Never widened. Performed 121 root evaluator evaluations with a maximum evaluation depth of 3. Performed 121 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 2 variables. [2018-12-02 14:50:23,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:23,798 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 14:50:23,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:50:23,799 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 14:50:23,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:50:23,805 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 14:50:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:23,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:50:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,814 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 14:50:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,843 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-02 14:50:23,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2018-12-02 14:50:23,843 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 14:50:23,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 14:50:23,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 14:50:23,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-02 14:50:23,844 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 4 states. [2018-12-02 14:50:23,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:50:23,859 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-12-02 14:50:23,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 14:50:23,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-12-02 14:50:23,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:50:23,860 INFO L225 Difference]: With dead ends: 30 [2018-12-02 14:50:23,860 INFO L226 Difference]: Without dead ends: 29 [2018-12-02 14:50:23,860 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-02 14:50:23,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-02 14:50:23,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-12-02 14:50:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-02 14:50:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-12-02 14:50:23,862 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2018-12-02 14:50:23,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:50:23,862 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-12-02 14:50:23,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 14:50:23,862 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-12-02 14:50:23,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 14:50:23,863 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:50:23,863 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-02 14:50:23,863 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 14:50:23,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:23,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1084928322, now seen corresponding path program 2 times [2018-12-02 14:50:23,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:50:23,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:50:23,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:23,864 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:50:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:23,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:23,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:50:23,893 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 14:50:23,893 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-02 14:50:23,894 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-02 14:50:23,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:50:23,894 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 14:50:23,900 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 14:50:23,900 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-02 14:50:23,904 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-02 14:50:23,904 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 14:50:23,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:50:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-02 14:50:23,933 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 14:50:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-02 14:50:23,982 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-12-02 14:50:23,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6] total 12 [2018-12-02 14:50:23,982 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:50:23,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 14:50:23,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 14:50:23,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-12-02 14:50:23,983 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 5 states. [2018-12-02 14:50:23,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:50:23,996 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-12-02 14:50:23,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 14:50:23,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-12-02 14:50:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:50:23,997 INFO L225 Difference]: With dead ends: 29 [2018-12-02 14:50:23,997 INFO L226 Difference]: Without dead ends: 28 [2018-12-02 14:50:23,997 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-12-02 14:50:23,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-02 14:50:23,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-02 14:50:23,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-02 14:50:23,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-12-02 14:50:23,999 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 21 [2018-12-02 14:50:23,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:50:24,000 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-12-02 14:50:24,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 14:50:24,000 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-12-02 14:50:24,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 14:50:24,000 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:50:24,000 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-02 14:50:24,001 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 14:50:24,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:24,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1060933980, now seen corresponding path program 2 times [2018-12-02 14:50:24,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:50:24,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:24,002 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 14:50:24,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:24,002 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:50:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:24,020 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:24,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:50:24,021 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 14:50:24,021 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-02 14:50:24,021 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-02 14:50:24,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:50:24,021 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 14:50:24,029 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 14:50:24,029 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-02 14:50:24,033 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-02 14:50:24,033 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 14:50:24,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:50:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 14:50:24,054 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 14:50:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 14:50:24,078 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-12-02 14:50:24,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2018-12-02 14:50:24,078 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:50:24,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 14:50:24,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 14:50:24,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-02 14:50:24,079 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 5 states. [2018-12-02 14:50:24,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:50:24,097 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-12-02 14:50:24,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 14:50:24,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-12-02 14:50:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:50:24,098 INFO L225 Difference]: With dead ends: 28 [2018-12-02 14:50:24,098 INFO L226 Difference]: Without dead ends: 27 [2018-12-02 14:50:24,098 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-12-02 14:50:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-02 14:50:24,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-02 14:50:24,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-02 14:50:24,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-12-02 14:50:24,101 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 23 [2018-12-02 14:50:24,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:50:24,101 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-12-02 14:50:24,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 14:50:24,101 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-12-02 14:50:24,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 14:50:24,102 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:50:24,102 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2018-12-02 14:50:24,102 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 14:50:24,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:50:24,102 INFO L82 PathProgramCache]: Analyzing trace with hash 380183793, now seen corresponding path program 2 times [2018-12-02 14:50:24,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:50:24,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:24,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 14:50:24,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:50:24,103 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:50:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:50:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:50:24,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:50:24,132 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 14:50:24,132 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-02 14:50:24,132 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-02 14:50:24,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:50:24,133 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 14:50:24,144 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 14:50:24,144 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-02 14:50:24,148 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-02 14:50:24,148 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 14:50:24,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:50:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 14:50:24,158 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 14:50:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 14:50:24,185 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-02 14:50:24,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2018-12-02 14:50:24,185 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 14:50:24,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 14:50:24,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 14:50:24,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-02 14:50:24,186 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2018-12-02 14:50:24,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:50:24,232 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-12-02 14:50:24,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 14:50:24,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-12-02 14:50:24,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:50:24,233 INFO L225 Difference]: With dead ends: 37 [2018-12-02 14:50:24,233 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 14:50:24,233 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-12-02 14:50:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 14:50:24,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 14:50:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 14:50:24,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 14:50:24,233 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-12-02 14:50:24,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:50:24,233 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 14:50:24,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 14:50:24,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 14:50:24,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 14:50:24,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 14:50:24,263 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-02 14:50:24,263 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 14:50:24,263 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 14:50:24,263 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 14:50:24,263 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 14:50:24,263 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 14:50:24,263 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 20) no Hoare annotation was computed. [2018-12-02 14:50:24,264 INFO L448 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2018-12-02 14:50:24,264 INFO L448 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-12-02 14:50:24,264 INFO L448 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2018-12-02 14:50:24,264 INFO L448 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-12-02 14:50:24,264 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-12-02 14:50:24,264 INFO L448 ceAbstractionStarter]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2018-12-02 14:50:24,264 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 20) no Hoare annotation was computed. [2018-12-02 14:50:24,264 INFO L444 ceAbstractionStarter]: At program point L15-4(lines 15 18) the Hoare annotation is: (and (<= 1 main_~j~0) (<= main_~j~0 (+ main_~i~0 1)) (<= main_~i~0 10000)) [2018-12-02 14:50:24,264 INFO L448 ceAbstractionStarter]: For program point L15-5(lines 15 18) no Hoare annotation was computed. [2018-12-02 14:50:24,264 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2018-12-02 14:50:24,264 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 20) the Hoare annotation is: true [2018-12-02 14:50:24,264 INFO L448 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2018-12-02 14:50:24,264 INFO L448 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-12-02 14:50:24,264 INFO L448 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-12-02 14:50:24,264 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-12-02 14:50:24,264 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2018-12-02 14:50:24,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:50:24 BoogieIcfgContainer [2018-12-02 14:50:24,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 14:50:24,272 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 14:50:24,272 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 14:50:24,272 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 14:50:24,272 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:50:22" (3/4) ... [2018-12-02 14:50:24,274 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 14:50:24,277 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 14:50:24,278 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 14:50:24,280 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-02 14:50:24,280 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-02 14:50:24,280 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 14:50:24,304 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5fa3b6f1-9ec8-40e0-9e7f-ea308564995a/bin-2019/utaipan/witness.graphml [2018-12-02 14:50:24,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 14:50:24,304 INFO L168 Benchmark]: Toolchain (without parser) took 1704.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 953.3 MB in the beginning and 856.8 MB in the end (delta: 96.5 MB). Peak memory consumption was 228.7 MB. Max. memory is 11.5 GB. [2018-12-02 14:50:24,305 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 14:50:24,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 118.15 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 945.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-12-02 14:50:24,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.51 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 14:50:24,305 INFO L168 Benchmark]: Boogie Preprocessor took 11.61 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 14:50:24,306 INFO L168 Benchmark]: RCFGBuilder took 145.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -167.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-12-02 14:50:24,306 INFO L168 Benchmark]: TraceAbstraction took 1382.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 860.1 MB in the end (delta: 249.8 MB). Peak memory consumption was 249.8 MB. Max. memory is 11.5 GB. [2018-12-02 14:50:24,306 INFO L168 Benchmark]: Witness Printer took 32.24 ms. Allocated memory is still 1.2 GB. Free memory was 860.1 MB in the beginning and 856.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-12-02 14:50:24,308 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 118.15 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 945.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.51 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.61 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 145.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -167.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1382.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 860.1 MB in the end (delta: 249.8 MB). Peak memory consumption was 249.8 MB. Max. memory is 11.5 GB. * Witness Printer took 32.24 ms. Allocated memory is still 1.2 GB. Free memory was 860.1 MB in the beginning and 856.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (1 <= j && j <= i + 1) && i <= 10000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 6 error locations. SAFE Result, 1.3s OverallTime, 12 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 99 SDtfs, 97 SDslu, 106 SDs, 0 SdLazy, 236 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 278 GetRequests, 218 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 3 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 9 NumberOfFragments, 16 HoareAnnotationTreeSize, 5 FomulaSimplifications, 97 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 293 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 388 ConstructedInterpolants, 0 QuantifiedInterpolants, 18282 SizeOfPredicates, 8 NumberOfNonLiveVariables, 180 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 90/180 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...