./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified_false-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_38223e7f-4944-4253-a1dc-257f1110d342/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified_false-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/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 f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 04:36:08,114 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 04:36:08,115 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 04:36:08,123 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 04:36:08,123 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 04:36:08,124 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 04:36:08,125 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 04:36:08,126 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 04:36:08,127 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 04:36:08,127 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 04:36:08,128 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 04:36:08,128 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 04:36:08,129 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 04:36:08,130 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 04:36:08,130 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 04:36:08,131 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 04:36:08,132 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 04:36:08,133 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 04:36:08,134 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 04:36:08,135 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 04:36:08,136 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 04:36:08,137 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 04:36:08,138 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 04:36:08,138 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 04:36:08,139 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 04:36:08,139 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 04:36:08,140 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 04:36:08,140 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 04:36:08,141 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 04:36:08,142 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 04:36:08,142 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 04:36:08,142 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 04:36:08,142 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 04:36:08,143 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 04:36:08,143 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 04:36:08,144 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 04:36:08,144 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-12-02 04:36:08,154 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 04:36:08,154 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 04:36:08,154 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 04:36:08,155 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 04:36:08,155 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 04:36:08,155 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 04:36:08,155 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 04:36:08,155 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 04:36:08,155 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 04:36:08,155 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 04:36:08,155 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 04:36:08,156 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 04:36:08,156 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 04:36:08,156 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 04:36:08,156 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 04:36:08,156 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 04:36:08,157 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 04:36:08,157 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 04:36:08,157 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 04:36:08,157 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 04:36:08,157 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-02 04:36:08,157 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 04:36:08,157 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 04:36:08,158 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 04:36:08,158 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 04:36:08,158 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 04:36:08,158 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 04:36:08,158 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 04:36:08,158 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 04:36:08,158 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 04:36:08,158 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 04:36:08,158 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 04:36:08,158 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 04:36:08,159 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 04:36:08,159 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 04:36:08,159 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_38223e7f-4944-4253-a1dc-257f1110d342/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 -> f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 [2018-12-02 04:36:08,182 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 04:36:08,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 04:36:08,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 04:36:08,194 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 04:36:08,195 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 04:36:08,195 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified_false-termination_true-no-overflow.c [2018-12-02 04:36:08,232 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/bin-2019/utaipan/data/194d1edc5/40816c7651d34cab86463d2653bcd04c/FLAG6ce175040 [2018-12-02 04:36:08,658 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 04:36:08,658 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified_false-termination_true-no-overflow.c [2018-12-02 04:36:08,662 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/bin-2019/utaipan/data/194d1edc5/40816c7651d34cab86463d2653bcd04c/FLAG6ce175040 [2018-12-02 04:36:09,081 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/bin-2019/utaipan/data/194d1edc5/40816c7651d34cab86463d2653bcd04c [2018-12-02 04:36:09,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 04:36:09,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 04:36:09,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 04:36:09,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 04:36:09,088 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 04:36:09,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:36:09" (1/1) ... [2018-12-02 04:36:09,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c56171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:09, skipping insertion in model container [2018-12-02 04:36:09,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:36:09" (1/1) ... [2018-12-02 04:36:09,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 04:36:09,104 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 04:36:09,193 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 04:36:09,195 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 04:36:09,203 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 04:36:09,210 INFO L195 MainTranslator]: Completed translation [2018-12-02 04:36:09,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:09 WrapperNode [2018-12-02 04:36:09,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 04:36:09,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 04:36:09,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 04:36:09,211 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 04:36:09,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:09" (1/1) ... [2018-12-02 04:36:09,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:09" (1/1) ... [2018-12-02 04:36:09,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 04:36:09,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 04:36:09,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 04:36:09,222 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 04:36:09,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:09" (1/1) ... [2018-12-02 04:36:09,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:09" (1/1) ... [2018-12-02 04:36:09,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:09" (1/1) ... [2018-12-02 04:36:09,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:09" (1/1) ... [2018-12-02 04:36:09,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:09" (1/1) ... [2018-12-02 04:36:09,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:09" (1/1) ... [2018-12-02 04:36:09,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:09" (1/1) ... [2018-12-02 04:36:09,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 04:36:09,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 04:36:09,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 04:36:09,233 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 04:36:09,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/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 04:36:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 04:36:09,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 04:36:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 04:36:09,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 04:36:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 04:36:09,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 04:36:09,374 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 04:36:09,374 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 04:36:09,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:36:09 BoogieIcfgContainer [2018-12-02 04:36:09,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 04:36:09,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 04:36:09,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 04:36:09,377 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 04:36:09,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:36:09" (1/3) ... [2018-12-02 04:36:09,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8e2d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:36:09, skipping insertion in model container [2018-12-02 04:36:09,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:36:09" (2/3) ... [2018-12-02 04:36:09,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8e2d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:36:09, skipping insertion in model container [2018-12-02 04:36:09,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:36:09" (3/3) ... [2018-12-02 04:36:09,379 INFO L112 eAbstractionObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1-modified_false-termination_true-no-overflow.c [2018-12-02 04:36:09,384 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 04:36:09,388 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-02 04:36:09,397 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-02 04:36:09,414 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 04:36:09,414 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 04:36:09,414 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 04:36:09,415 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 04:36:09,415 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 04:36:09,415 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 04:36:09,415 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 04:36:09,415 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 04:36:09,425 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-12-02 04:36:09,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 04:36:09,428 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 04:36:09,428 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 04:36:09,430 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 04:36:09,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:36:09,433 INFO L82 PathProgramCache]: Analyzing trace with hash 350361843, now seen corresponding path program 1 times [2018-12-02 04:36:09,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 04:36:09,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:36:09,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:36:09,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:36:09,465 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 04:36:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:36:09,516 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 04:36:09,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 04:36:09,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 04:36:09,517 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 04:36:09,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 04:36:09,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 04:36:09,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 04:36:09,529 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2018-12-02 04:36:09,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 04:36:09,578 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-12-02 04:36:09,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 04:36:09,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-12-02 04:36:09,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 04:36:09,584 INFO L225 Difference]: With dead ends: 33 [2018-12-02 04:36:09,584 INFO L226 Difference]: Without dead ends: 18 [2018-12-02 04:36:09,586 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 04:36:09,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-02 04:36:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-02 04:36:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-02 04:36:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-12-02 04:36:09,608 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2018-12-02 04:36:09,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 04:36:09,608 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-12-02 04:36:09,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 04:36:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-12-02 04:36:09,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 04:36:09,609 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 04:36:09,609 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 04:36:09,609 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 04:36:09,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:36:09,609 INFO L82 PathProgramCache]: Analyzing trace with hash 350362035, now seen corresponding path program 1 times [2018-12-02 04:36:09,609 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 04:36:09,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:36:09,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:36:09,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:36:09,610 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 04:36:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:36:09,626 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 04:36:09,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 04:36:09,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 04:36:09,626 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 04:36:09,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 04:36:09,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 04:36:09,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 04:36:09,628 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2018-12-02 04:36:09,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 04:36:09,663 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-12-02 04:36:09,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 04:36:09,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-12-02 04:36:09,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 04:36:09,664 INFO L225 Difference]: With dead ends: 20 [2018-12-02 04:36:09,664 INFO L226 Difference]: Without dead ends: 18 [2018-12-02 04:36:09,664 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 04:36:09,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-02 04:36:09,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-02 04:36:09,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-02 04:36:09,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-12-02 04:36:09,667 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2018-12-02 04:36:09,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 04:36:09,667 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-12-02 04:36:09,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 04:36:09,667 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-12-02 04:36:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 04:36:09,667 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 04:36:09,667 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 04:36:09,668 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 04:36:09,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:36:09,668 INFO L82 PathProgramCache]: Analyzing trace with hash 865022446, now seen corresponding path program 1 times [2018-12-02 04:36:09,668 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 04:36:09,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:36:09,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:36:09,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:36:09,669 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 04:36:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:36:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 04:36:09,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 04:36:09,700 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 04:36:09,700 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-12-02 04:36:09,701 INFO L205 CegarAbsIntRunner]: [0], [4], [7], [16], [19], [20], [21], [23], [39], [40], [41] [2018-12-02 04:36:09,721 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 04:36:09,721 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 04:36:09,781 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 04:36:09,782 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Performed 28 root evaluator evaluations with a maximum evaluation depth of 3. Performed 28 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-12-02 04:36:09,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:36:09,788 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 04:36:09,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 04:36:09,788 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/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 04:36:09,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:36:09,795 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 04:36:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:36:09,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 04:36:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 04:36:09,852 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 04:36:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 04:36:09,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-02 04:36:09,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2018-12-02 04:36:09,893 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 04:36:09,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 04:36:09,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 04:36:09,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-02 04:36:09,894 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2018-12-02 04:36:09,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 04:36:09,932 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-12-02 04:36:09,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 04:36:09,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-02 04:36:09,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 04:36:09,933 INFO L225 Difference]: With dead ends: 36 [2018-12-02 04:36:09,933 INFO L226 Difference]: Without dead ends: 35 [2018-12-02 04:36:09,934 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-02 04:36:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-02 04:36:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2018-12-02 04:36:09,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-02 04:36:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-12-02 04:36:09,937 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2018-12-02 04:36:09,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 04:36:09,938 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-12-02 04:36:09,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 04:36:09,938 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2018-12-02 04:36:09,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 04:36:09,938 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 04:36:09,938 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 04:36:09,939 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 04:36:09,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:36:09,939 INFO L82 PathProgramCache]: Analyzing trace with hash 865022638, now seen corresponding path program 1 times [2018-12-02 04:36:09,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 04:36:09,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:36:09,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:36:09,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:36:09,941 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 04:36:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:36:09,970 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 04:36:09,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 04:36:09,970 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 04:36:09,970 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-12-02 04:36:09,971 INFO L205 CegarAbsIntRunner]: [0], [4], [7], [16], [19], [21], [23], [25], [26], [39], [40], [41] [2018-12-02 04:36:09,972 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 04:36:09,972 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 04:36:09,982 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 04:36:09,982 INFO L272 AbstractInterpreter]: Visited 12 different actions 12 times. Never merged. Never widened. Performed 30 root evaluator evaluations with a maximum evaluation depth of 3. Performed 30 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-12-02 04:36:09,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:36:09,984 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 04:36:09,984 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 04:36:09,984 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/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 04:36:09,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:36:09,990 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 04:36:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:36:09,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 04:36:10,028 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 04:36:10,029 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 04:36:10,068 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 04:36:10,092 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-02 04:36:10,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2018-12-02 04:36:10,093 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 04:36:10,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 04:36:10,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 04:36:10,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-12-02 04:36:10,094 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 8 states. [2018-12-02 04:36:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 04:36:10,209 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2018-12-02 04:36:10,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 04:36:10,209 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-12-02 04:36:10,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 04:36:10,210 INFO L225 Difference]: With dead ends: 52 [2018-12-02 04:36:10,210 INFO L226 Difference]: Without dead ends: 51 [2018-12-02 04:36:10,211 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-12-02 04:36:10,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-02 04:36:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2018-12-02 04:36:10,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-02 04:36:10,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2018-12-02 04:36:10,216 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 13 [2018-12-02 04:36:10,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 04:36:10,217 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2018-12-02 04:36:10,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 04:36:10,217 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2018-12-02 04:36:10,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 04:36:10,217 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 04:36:10,218 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 04:36:10,218 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 04:36:10,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:36:10,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1042517224, now seen corresponding path program 1 times [2018-12-02 04:36:10,218 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 04:36:10,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:36:10,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:36:10,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:36:10,220 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 04:36:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:36:10,251 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 04:36:10,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 04:36:10,251 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 04:36:10,251 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-12-02 04:36:10,251 INFO L205 CegarAbsIntRunner]: [0], [4], [7], [16], [19], [20], [25], [27], [29], [39], [40], [41] [2018-12-02 04:36:10,252 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 04:36:10,252 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 04:36:10,260 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 04:36:10,260 INFO L272 AbstractInterpreter]: Visited 12 different actions 12 times. Never merged. Never widened. Performed 30 root evaluator evaluations with a maximum evaluation depth of 4. Performed 30 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-12-02 04:36:10,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:36:10,262 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 04:36:10,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 04:36:10,262 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/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 04:36:10,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:36:10,270 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 04:36:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:36:10,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 04:36:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 04:36:10,300 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 04:36:10,309 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 04:36:10,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-02 04:36:10,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2018-12-02 04:36:10,333 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 04:36:10,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 04:36:10,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 04:36:10,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-12-02 04:36:10,334 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 5 states. [2018-12-02 04:36:10,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 04:36:10,358 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2018-12-02 04:36:10,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 04:36:10,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-02 04:36:10,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 04:36:10,359 INFO L225 Difference]: With dead ends: 35 [2018-12-02 04:36:10,359 INFO L226 Difference]: Without dead ends: 34 [2018-12-02 04:36:10,359 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-12-02 04:36:10,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-02 04:36:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2018-12-02 04:36:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-02 04:36:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2018-12-02 04:36:10,362 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 13 [2018-12-02 04:36:10,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 04:36:10,362 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2018-12-02 04:36:10,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 04:36:10,363 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2018-12-02 04:36:10,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 04:36:10,363 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 04:36:10,363 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 04:36:10,363 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 04:36:10,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:36:10,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1042517416, now seen corresponding path program 1 times [2018-12-02 04:36:10,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 04:36:10,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:36:10,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:36:10,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:36:10,365 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 04:36:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:36:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 04:36:10,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 04:36:10,382 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 04:36:10,382 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-12-02 04:36:10,382 INFO L205 CegarAbsIntRunner]: [0], [4], [7], [16], [25], [26], [27], [29], [39], [40], [41] [2018-12-02 04:36:10,383 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 04:36:10,383 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 04:36:10,390 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 04:36:10,390 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Performed 28 root evaluator evaluations with a maximum evaluation depth of 4. Performed 28 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-12-02 04:36:10,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:36:10,391 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 04:36:10,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 04:36:10,392 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/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 04:36:10,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:36:10,399 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 04:36:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:36:10,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 04:36:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 04:36:10,428 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 04:36:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 04:36:10,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-02 04:36:10,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2018-12-02 04:36:10,454 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 04:36:10,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 04:36:10,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 04:36:10,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-02 04:36:10,454 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 5 states. [2018-12-02 04:36:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 04:36:10,496 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2018-12-02 04:36:10,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 04:36:10,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-02 04:36:10,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 04:36:10,497 INFO L225 Difference]: With dead ends: 47 [2018-12-02 04:36:10,497 INFO L226 Difference]: Without dead ends: 46 [2018-12-02 04:36:10,497 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-02 04:36:10,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-02 04:36:10,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 24. [2018-12-02 04:36:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 04:36:10,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-02 04:36:10,500 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 13 [2018-12-02 04:36:10,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 04:36:10,500 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-02 04:36:10,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 04:36:10,500 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-12-02 04:36:10,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 04:36:10,500 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 04:36:10,501 INFO L402 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 04:36:10,501 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-02 04:36:10,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:36:10,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1987862754, now seen corresponding path program 1 times [2018-12-02 04:36:10,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 04:36:10,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:36:10,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:36:10,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:36:10,502 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 04:36:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:36:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 04:36:10,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 04:36:10,538 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 04:36:10,538 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-12-02 04:36:10,538 INFO L205 CegarAbsIntRunner]: [0], [4], [7], [16], [19], [21], [23], [25], [26], [27], [29], [39], [40], [41] [2018-12-02 04:36:10,539 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 04:36:10,539 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 04:36:10,549 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 04:36:10,550 INFO L272 AbstractInterpreter]: Visited 14 different actions 14 times. Never merged. Never widened. Performed 36 root evaluator evaluations with a maximum evaluation depth of 4. Performed 36 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 2 fixpoints after 2 different actions. Largest state had 4 variables. [2018-12-02 04:36:10,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:36:10,551 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 04:36:10,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 04:36:10,551 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/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 04:36:10,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:36:10,557 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 04:36:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:36:10,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 04:36:10,597 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 04:36:10,598 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 04:36:10,670 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 04:36:10,684 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-02 04:36:10,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2018-12-02 04:36:10,684 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 04:36:10,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 04:36:10,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 04:36:10,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-12-02 04:36:10,685 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 11 states. [2018-12-02 04:36:11,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 04:36:11,046 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2018-12-02 04:36:11,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-12-02 04:36:11,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2018-12-02 04:36:11,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 04:36:11,046 INFO L225 Difference]: With dead ends: 60 [2018-12-02 04:36:11,046 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 04:36:11,047 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=511, Invalid=1129, Unknown=0, NotChecked=0, Total=1640 [2018-12-02 04:36:11,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 04:36:11,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 04:36:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 04:36:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 04:36:11,048 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-12-02 04:36:11,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 04:36:11,048 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 04:36:11,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 04:36:11,048 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 04:36:11,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 04:36:11,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 04:36:11,065 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-02 04:36:11,074 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-02 04:36:11,075 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-02 04:36:11,076 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-02 04:36:11,109 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-02 04:36:11,110 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 04:36:11,110 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 04:36:11,110 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 04:36:11,110 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 04:36:11,110 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 04:36:11,110 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-12-02 04:36:11,110 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-12-02 04:36:11,110 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 16 30) no Hoare annotation was computed. [2018-12-02 04:36:11,111 INFO L448 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-12-02 04:36:11,111 INFO L448 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-12-02 04:36:11,111 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-12-02 04:36:11,111 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-12-02 04:36:11,111 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 16 30) no Hoare annotation was computed. [2018-12-02 04:36:11,111 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-12-02 04:36:11,111 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 16 30) the Hoare annotation is: true [2018-12-02 04:36:11,111 INFO L448 ceAbstractionStarter]: For program point L22(lines 22 26) no Hoare annotation was computed. [2018-12-02 04:36:11,111 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 28) no Hoare annotation was computed. [2018-12-02 04:36:11,112 INFO L444 ceAbstractionStarter]: At program point L22-2(lines 21 27) the Hoare annotation is: (and (<= 0 main_~y1~0) (<= 0 main_~y2~0) (<= main_~y2~0 2147483647) (<= main_~y1~0 2147483647)) [2018-12-02 04:36:11,112 INFO L448 ceAbstractionStarter]: For program point L20-1(lines 20 28) no Hoare annotation was computed. [2018-12-02 04:36:11,112 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-12-02 04:36:11,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:36:11 BoogieIcfgContainer [2018-12-02 04:36:11,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 04:36:11,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 04:36:11,122 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 04:36:11,122 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 04:36:11,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:36:09" (3/4) ... [2018-12-02 04:36:11,125 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 04:36:11,129 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 04:36:11,130 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 04:36:11,132 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-02 04:36:11,132 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-02 04:36:11,132 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 04:36:11,160 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_38223e7f-4944-4253-a1dc-257f1110d342/bin-2019/utaipan/witness.graphml [2018-12-02 04:36:11,160 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 04:36:11,160 INFO L168 Benchmark]: Toolchain (without parser) took 2076.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.8 MB). Free memory was 952.4 MB in the beginning and 1.2 GB in the end (delta: -231.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 04:36:11,161 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 04:36:11,162 INFO L168 Benchmark]: CACSL2BoogieTranslator took 125.80 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 04:36:11,162 INFO L168 Benchmark]: Boogie Procedure Inliner took 10.97 ms. Allocated memory is still 1.0 GB. Free memory is still 941.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 04:36:11,162 INFO L168 Benchmark]: Boogie Preprocessor took 10.78 ms. Allocated memory is still 1.0 GB. Free memory is still 941.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 04:36:11,162 INFO L168 Benchmark]: RCFGBuilder took 141.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2018-12-02 04:36:11,163 INFO L168 Benchmark]: TraceAbstraction took 1746.14 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -66.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 11.5 GB. [2018-12-02 04:36:11,163 INFO L168 Benchmark]: Witness Printer took 38.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 04:36:11,164 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 125.80 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 10.97 ms. Allocated memory is still 1.0 GB. Free memory is still 941.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.78 ms. Allocated memory is still 1.0 GB. Free memory is still 941.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 141.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1746.14 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -66.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 11.5 GB. * Witness Printer took 38.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((0 <= y1 && 0 <= y2) && y2 <= 2147483647) && y1 <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 4 error locations. SAFE Result, 1.7s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 167 SDslu, 88 SDs, 0 SdLazy, 406 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 213 GetRequests, 128 SyntacticMatches, 6 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 5 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 15 NumberOfFragments, 18 HoareAnnotationTreeSize, 5 FomulaSimplifications, 412 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 396 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 220 ConstructedInterpolants, 12 QuantifiedInterpolants, 16116 SizeOfPredicates, 10 NumberOfNonLiveVariables, 157 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 20/75 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...