./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7_false-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_860a4b84-b259-4e40-99a1-7e432f82b95e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/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 3428809e66c8ffa9373e37ec3d02a46642c7f8bc .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 22:05:07,139 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 22:05:07,140 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 22:05:07,146 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 22:05:07,146 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 22:05:07,147 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 22:05:07,148 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 22:05:07,148 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 22:05:07,149 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 22:05:07,150 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 22:05:07,150 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 22:05:07,151 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 22:05:07,151 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 22:05:07,152 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 22:05:07,152 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 22:05:07,153 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 22:05:07,153 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 22:05:07,154 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 22:05:07,155 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 22:05:07,156 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 22:05:07,157 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 22:05:07,157 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 22:05:07,159 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 22:05:07,159 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 22:05:07,159 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 22:05:07,159 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 22:05:07,160 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 22:05:07,161 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 22:05:07,161 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 22:05:07,162 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 22:05:07,162 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 22:05:07,162 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 22:05:07,162 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 22:05:07,163 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 22:05:07,163 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 22:05:07,164 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 22:05:07,164 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-12-01 22:05:07,171 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 22:05:07,171 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 22:05:07,172 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 22:05:07,172 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 22:05:07,172 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-01 22:05:07,172 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-01 22:05:07,172 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-01 22:05:07,172 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-01 22:05:07,172 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-01 22:05:07,172 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-01 22:05:07,173 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-01 22:05:07,173 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-01 22:05:07,173 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-01 22:05:07,173 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 22:05:07,173 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 22:05:07,173 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 22:05:07,174 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 22:05:07,174 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 22:05:07,174 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 22:05:07,174 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 22:05:07,174 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-01 22:05:07,174 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 22:05:07,174 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 22:05:07,174 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 22:05:07,174 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 22:05:07,175 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 22:05:07,175 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 22:05:07,175 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 22:05:07,175 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 22:05:07,175 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 22:05:07,175 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 22:05:07,175 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-01 22:05:07,175 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 22:05:07,176 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 22:05:07,176 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-01 22:05:07,176 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_860a4b84-b259-4e40-99a1-7e432f82b95e/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 -> 3428809e66c8ffa9373e37ec3d02a46642c7f8bc [2018-12-01 22:05:07,194 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 22:05:07,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 22:05:07,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 22:05:07,207 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 22:05:07,207 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 22:05:07,208 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7_false-no-overflow.c [2018-12-01 22:05:07,248 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/bin-2019/utaipan/data/2febde2bd/cc6d5ad88b9b4cf0a109c9e7032bdadf/FLAG820b09640 [2018-12-01 22:05:07,587 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 22:05:07,588 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7_false-no-overflow.c [2018-12-01 22:05:07,591 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/bin-2019/utaipan/data/2febde2bd/cc6d5ad88b9b4cf0a109c9e7032bdadf/FLAG820b09640 [2018-12-01 22:05:07,987 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/bin-2019/utaipan/data/2febde2bd/cc6d5ad88b9b4cf0a109c9e7032bdadf [2018-12-01 22:05:07,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 22:05:07,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 22:05:07,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 22:05:07,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 22:05:07,997 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 22:05:07,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:05:07" (1/1) ... [2018-12-01 22:05:07,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55a03fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:05:07, skipping insertion in model container [2018-12-01 22:05:08,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:05:07" (1/1) ... [2018-12-01 22:05:08,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 22:05:08,012 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 22:05:08,096 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:05:08,098 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 22:05:08,110 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:05:08,120 INFO L195 MainTranslator]: Completed translation [2018-12-01 22:05:08,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:05:08 WrapperNode [2018-12-01 22:05:08,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 22:05:08,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 22:05:08,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 22:05:08,121 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 22:05:08,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:05:08" (1/1) ... [2018-12-01 22:05:08,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:05:08" (1/1) ... [2018-12-01 22:05:08,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 22:05:08,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 22:05:08,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 22:05:08,135 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 22:05:08,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:05:08" (1/1) ... [2018-12-01 22:05:08,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:05:08" (1/1) ... [2018-12-01 22:05:08,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:05:08" (1/1) ... [2018-12-01 22:05:08,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:05:08" (1/1) ... [2018-12-01 22:05:08,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:05:08" (1/1) ... [2018-12-01 22:05:08,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:05:08" (1/1) ... [2018-12-01 22:05:08,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:05:08" (1/1) ... [2018-12-01 22:05:08,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 22:05:08,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 22:05:08,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 22:05:08,177 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 22:05:08,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:05:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/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 [2018-12-01 22:05:08,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 22:05:08,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 22:05:08,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 22:05:08,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 22:05:08,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 22:05:08,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 22:05:08,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 22:05:08,209 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 22:05:08,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 22:05:08,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 22:05:08,313 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 22:05:08,313 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-01 22:05:08,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:05:08 BoogieIcfgContainer [2018-12-01 22:05:08,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 22:05:08,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 22:05:08,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 22:05:08,316 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 22:05:08,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 10:05:07" (1/3) ... [2018-12-01 22:05:08,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c5bd98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:05:08, skipping insertion in model container [2018-12-01 22:05:08,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:05:08" (2/3) ... [2018-12-01 22:05:08,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c5bd98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:05:08, skipping insertion in model container [2018-12-01 22:05:08,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:05:08" (3/3) ... [2018-12-01 22:05:08,318 INFO L112 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig7_false-no-overflow.c [2018-12-01 22:05:08,324 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 22:05:08,329 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-01 22:05:08,340 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-01 22:05:08,359 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 22:05:08,359 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 22:05:08,360 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 22:05:08,360 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 22:05:08,360 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 22:05:08,360 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 22:05:08,360 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 22:05:08,360 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 22:05:08,370 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-12-01 22:05:08,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 22:05:08,373 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:05:08,374 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:05:08,375 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 22:05:08,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:05:08,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1819880950, now seen corresponding path program 1 times [2018-12-01 22:05:08,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:05:08,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:05:08,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:05:08,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:05:08,410 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:05:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:05:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:05:08,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:05:08,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 22:05:08,489 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 22:05:08,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 22:05:08,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 22:05:08,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:05:08,500 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 4 states. [2018-12-01 22:05:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:05:08,544 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2018-12-01 22:05:08,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 22:05:08,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-12-01 22:05:08,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:05:08,550 INFO L225 Difference]: With dead ends: 65 [2018-12-01 22:05:08,550 INFO L226 Difference]: Without dead ends: 39 [2018-12-01 22:05:08,552 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 [2018-12-01 22:05:08,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-01 22:05:08,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2018-12-01 22:05:08,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-01 22:05:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-12-01 22:05:08,574 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 10 [2018-12-01 22:05:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:05:08,574 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-12-01 22:05:08,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 22:05:08,574 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-12-01 22:05:08,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-01 22:05:08,574 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:05:08,574 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:05:08,575 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 22:05:08,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:05:08,575 INFO L82 PathProgramCache]: Analyzing trace with hash 852311453, now seen corresponding path program 1 times [2018-12-01 22:05:08,575 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:05:08,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:05:08,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:05:08,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:05:08,577 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:05:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:05:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:05:08,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:05:08,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 22:05:08,607 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 22:05:08,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 22:05:08,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 22:05:08,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 22:05:08,609 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 3 states. [2018-12-01 22:05:08,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:05:08,621 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-12-01 22:05:08,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 22:05:08,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-01 22:05:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:05:08,622 INFO L225 Difference]: With dead ends: 39 [2018-12-01 22:05:08,622 INFO L226 Difference]: Without dead ends: 28 [2018-12-01 22:05:08,623 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 22:05:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-01 22:05:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-01 22:05:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-01 22:05:08,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-12-01 22:05:08,625 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 12 [2018-12-01 22:05:08,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:05:08,625 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-12-01 22:05:08,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 22:05:08,625 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-12-01 22:05:08,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-01 22:05:08,626 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:05:08,626 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:05:08,626 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 22:05:08,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:05:08,626 INFO L82 PathProgramCache]: Analyzing trace with hash 264114482, now seen corresponding path program 1 times [2018-12-01 22:05:08,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:05:08,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:05:08,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:05:08,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:05:08,627 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:05:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:05:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:05:08,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:05:08,662 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-01 22:05:08,662 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-12-01 22:05:08,663 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [9], [17], [19], [20], [21], [23], [55], [56], [57] [2018-12-01 22:05:08,682 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-01 22:05:08,683 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-01 22:05:08,780 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-01 22:05:08,781 INFO L272 AbstractInterpreter]: Visited 12 different actions 27 times. Merged at 5 different actions 13 times. Never widened. Performed 150 root evaluator evaluations with a maximum evaluation depth of 3. Performed 150 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-12-01 22:05:08,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:05:08,790 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-01 22:05:08,790 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:05:08,790 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/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 [2018-12-01 22:05:08,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:05:08,796 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-01 22:05:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:05:08,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:05:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:05:08,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 22:05:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:05:08,888 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-01 22:05:08,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-12-01 22:05:08,888 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-01 22:05:08,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-01 22:05:08,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-01 22:05:08,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-12-01 22:05:08,889 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 8 states. [2018-12-01 22:05:08,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:05:08,936 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2018-12-01 22:05:08,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 22:05:08,937 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-12-01 22:05:08,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:05:08,937 INFO L225 Difference]: With dead ends: 45 [2018-12-01 22:05:08,937 INFO L226 Difference]: Without dead ends: 44 [2018-12-01 22:05:08,938 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2018-12-01 22:05:08,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-01 22:05:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2018-12-01 22:05:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-01 22:05:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-12-01 22:05:08,942 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 14 [2018-12-01 22:05:08,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:05:08,942 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-12-01 22:05:08,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-01 22:05:08,942 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-12-01 22:05:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-01 22:05:08,942 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:05:08,943 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:05:08,943 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 22:05:08,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:05:08,943 INFO L82 PathProgramCache]: Analyzing trace with hash -402385597, now seen corresponding path program 1 times [2018-12-01 22:05:08,943 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:05:08,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:05:08,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:05:08,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:05:08,944 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:05:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:05:08,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:05:08,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:05:08,970 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-01 22:05:08,970 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-12-01 22:05:08,970 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [9], [17], [19], [21], [22], [23], [55], [56], [57] [2018-12-01 22:05:08,971 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-01 22:05:08,971 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-01 22:05:08,998 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-01 22:05:08,998 INFO L272 AbstractInterpreter]: Visited 12 different actions 27 times. Merged at 5 different actions 13 times. Never widened. Performed 150 root evaluator evaluations with a maximum evaluation depth of 3. Performed 150 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-12-01 22:05:08,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:05:08,999 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-01 22:05:08,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:05:08,999 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/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 [2018-12-01 22:05:09,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:05:09,005 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-01 22:05:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:05:09,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:05:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:05:09,030 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 22:05:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:05:09,090 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-12-01 22:05:09,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 11 [2018-12-01 22:05:09,090 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 22:05:09,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 22:05:09,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 22:05:09,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-12-01 22:05:09,091 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2018-12-01 22:05:09,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:05:09,115 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-12-01 22:05:09,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 22:05:09,115 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-12-01 22:05:09,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:05:09,116 INFO L225 Difference]: With dead ends: 31 [2018-12-01 22:05:09,116 INFO L226 Difference]: Without dead ends: 30 [2018-12-01 22:05:09,116 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-12-01 22:05:09,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-01 22:05:09,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-12-01 22:05:09,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-01 22:05:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-12-01 22:05:09,119 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 15 [2018-12-01 22:05:09,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:05:09,119 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-12-01 22:05:09,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 22:05:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-12-01 22:05:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 22:05:09,119 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:05:09,120 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:05:09,120 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 22:05:09,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:05:09,120 INFO L82 PathProgramCache]: Analyzing trace with hash 409354713, now seen corresponding path program 1 times [2018-12-01 22:05:09,120 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:05:09,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:05:09,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:05:09,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:05:09,122 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:05:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:05:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:05:09,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:05:09,166 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-01 22:05:09,166 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-12-01 22:05:09,166 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [17], [19], [21], [23], [27], [36], [41], [42], [55], [56], [57] [2018-12-01 22:05:09,167 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-01 22:05:09,167 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-01 22:05:09,207 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-01 22:05:09,207 INFO L272 AbstractInterpreter]: Visited 16 different actions 43 times. Merged at 8 different actions 24 times. Widened at 1 different actions 1 times. Performed 220 root evaluator evaluations with a maximum evaluation depth of 3. Performed 220 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 20 variables. [2018-12-01 22:05:09,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:05:09,209 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-01 22:05:09,240 INFO L227 lantSequenceWeakener]: Weakened 14 states. On average, predicates are now at 74.49% of their original sizes. [2018-12-01 22:05:09,240 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-01 22:05:09,251 INFO L418 sIntCurrentIteration]: We unified 15 AI predicates to 15 [2018-12-01 22:05:09,251 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-01 22:05:09,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-01 22:05:09,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2018-12-01 22:05:09,252 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 22:05:09,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 22:05:09,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 22:05:09,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-01 22:05:09,253 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2018-12-01 22:05:09,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:05:09,319 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2018-12-01 22:05:09,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 22:05:09,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-12-01 22:05:09,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:05:09,320 INFO L225 Difference]: With dead ends: 40 [2018-12-01 22:05:09,320 INFO L226 Difference]: Without dead ends: 38 [2018-12-01 22:05:09,320 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-01 22:05:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-01 22:05:09,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-12-01 22:05:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-01 22:05:09,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-12-01 22:05:09,323 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 16 [2018-12-01 22:05:09,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:05:09,323 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-12-01 22:05:09,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 22:05:09,323 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-12-01 22:05:09,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-01 22:05:09,324 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:05:09,324 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:05:09,324 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 22:05:09,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:05:09,324 INFO L82 PathProgramCache]: Analyzing trace with hash -215550354, now seen corresponding path program 2 times [2018-12-01 22:05:09,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:05:09,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:05:09,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:05:09,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:05:09,325 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:05:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:05:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:05:09,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:05:09,359 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-01 22:05:09,359 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-01 22:05:09,359 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-01 22:05:09,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:05:09,359 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/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 [2018-12-01 22:05:09,365 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 22:05:09,365 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-01 22:05:09,372 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2018-12-01 22:05:09,372 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 22:05:09,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:05:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-01 22:05:09,396 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 22:05:09,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-01 22:05:09,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-01 22:05:09,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2018-12-01 22:05:09,423 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-01 22:05:09,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-01 22:05:09,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-01 22:05:09,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-12-01 22:05:09,424 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 11 states. [2018-12-01 22:05:09,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:05:09,517 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2018-12-01 22:05:09,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-01 22:05:09,517 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2018-12-01 22:05:09,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:05:09,518 INFO L225 Difference]: With dead ends: 85 [2018-12-01 22:05:09,518 INFO L226 Difference]: Without dead ends: 84 [2018-12-01 22:05:09,519 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2018-12-01 22:05:09,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-12-01 22:05:09,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 27. [2018-12-01 22:05:09,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-01 22:05:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-12-01 22:05:09,523 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 18 [2018-12-01 22:05:09,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:05:09,524 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-12-01 22:05:09,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-01 22:05:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-12-01 22:05:09,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-01 22:05:09,524 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:05:09,524 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:05:09,524 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 22:05:09,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:05:09,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1747109637, now seen corresponding path program 1 times [2018-12-01 22:05:09,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:05:09,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:05:09,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 22:05:09,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:05:09,526 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:05:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:05:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 22:05:09,554 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 22:05:09,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 10:05:09 BoogieIcfgContainer [2018-12-01 22:05:09,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 22:05:09,573 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 22:05:09,573 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 22:05:09,573 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 22:05:09,573 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:05:08" (3/4) ... [2018-12-01 22:05:09,575 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-01 22:05:09,609 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_860a4b84-b259-4e40-99a1-7e432f82b95e/bin-2019/utaipan/witness.graphml [2018-12-01 22:05:09,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 22:05:09,610 INFO L168 Benchmark]: Toolchain (without parser) took 1619.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 953.3 MB in the beginning and 899.3 MB in the end (delta: 54.0 MB). Peak memory consumption was 188.8 MB. Max. memory is 11.5 GB. [2018-12-01 22:05:09,611 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-12-01 22:05:09,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 127.53 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 22:05:09,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.38 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. [2018-12-01 22:05:09,613 INFO L168 Benchmark]: Boogie Preprocessor took 41.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -190.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-12-01 22:05:09,613 INFO L168 Benchmark]: RCFGBuilder took 137.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2018-12-01 22:05:09,614 INFO L168 Benchmark]: TraceAbstraction took 1258.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 902.6 MB in the end (delta: 206.5 MB). Peak memory consumption was 206.5 MB. Max. memory is 11.5 GB. [2018-12-01 22:05:09,614 INFO L168 Benchmark]: Witness Printer took 37.16 ms. Allocated memory is still 1.2 GB. Free memory was 902.6 MB in the beginning and 899.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-12-01 22:05:09,616 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 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 127.53 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 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 13.38 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 41.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -190.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 137.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1258.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 902.6 MB in the end (delta: 206.5 MB). Peak memory consumption was 206.5 MB. Max. memory is 11.5 GB. * Witness Printer took 37.16 ms. Allocated memory is still 1.2 GB. Free memory was 902.6 MB in the beginning and 899.3 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: - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int a_length = __VERIFIER_nondet_int(); [L13] COND FALSE !(a_length < 1) [L16] int a[a_length]; [L17] int j = 0; VAL [a={2147483649:0}, a_length=1, j=0] [L17] COND TRUE j < a_length [L18] a[j] = __VERIFIER_nondet_int() [L17] j++ VAL [a={2147483649:0}, a_length=1, j=1] [L17] COND FALSE !(j < a_length) VAL [a={2147483649:0}, a_length=1, j=1] [L20] int offset = 1; [L21] int i = 0; VAL [a={2147483649:0}, a_length=1, i=0, j=1, offset=1] [L22] COND TRUE i < a_length [L23] EXPR a[i] VAL [a={2147483649:0}, a[i]=2147483647, a_length=1, i=0, j=1, offset=1] [L23] COND FALSE !(a[i] < 0) [L26] EXPR i + offset [L26] EXPR a[i] VAL [a={2147483649:0}, a[i]=2147483647, a_length=1, i=0, j=1, offset=1] [L26] i + offset + a[i] VAL [a={2147483649:0}, a[i]=2147483647, a_length=1, i=0, j=1, offset=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 6 error locations. UNSAFE Result, 1.2s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 120 SDtfs, 190 SDslu, 331 SDs, 0 SdLazy, 128 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 143 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 3 AbstIntIterations, 1 AbstIntStrong, 0.8878306878306877 AbsIntWeakeningRatio, 0.7333333333333333 AbsIntAvgWeakeningVarsNumRemoved, 3.4 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 85 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 150 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 167 ConstructedInterpolants, 0 QuantifiedInterpolants, 5591 SizeOfPredicates, 8 NumberOfNonLiveVariables, 165 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 20/52 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...