./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 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 0.1.23-5842f4b [2018-11-18 16:54:00,866 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:54:00,867 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:54:00,874 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:54:00,874 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:54:00,875 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:54:00,876 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:54:00,877 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:54:00,878 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:54:00,879 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:54:00,880 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:54:00,880 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:54:00,880 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:54:00,881 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:54:00,882 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:54:00,883 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:54:00,884 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:54:00,885 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:54:00,886 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:54:00,887 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:54:00,888 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:54:00,889 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:54:00,891 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:54:00,891 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:54:00,891 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:54:00,892 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:54:00,892 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:54:00,893 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:54:00,893 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:54:00,895 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:54:00,895 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:54:00,895 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:54:00,896 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:54:00,896 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:54:00,896 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:54:00,897 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:54:00,897 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-18 16:54:00,907 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:54:00,908 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:54:00,908 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:54:00,909 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 16:54:00,909 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 16:54:00,909 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 16:54:00,909 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 16:54:00,910 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:54:00,910 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 16:54:00,910 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:54:00,910 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:54:00,910 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:54:00,910 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:54:00,910 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:54:00,911 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 16:54:00,911 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:54:00,911 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:54:00,911 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:54:00,911 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:54:00,911 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:54:00,911 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:54:00,912 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:54:00,912 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:54:00,912 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:54:00,912 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:54:00,912 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:54:00,912 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 16:54:00,912 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:54:00,913 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:54:00,913 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3428809e66c8ffa9373e37ec3d02a46642c7f8bc [2018-11-18 16:54:00,939 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:54:00,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:54:00,949 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:54:00,950 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:54:00,951 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:54:00,951 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7_false-no-overflow.c [2018-11-18 16:54:00,982 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/data/928781194/8ef2d8c3547b44e6a50074fd2f042014/FLAGa1773e476 [2018-11-18 16:54:01,374 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:54:01,374 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7_false-no-overflow.c [2018-11-18 16:54:01,378 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/data/928781194/8ef2d8c3547b44e6a50074fd2f042014/FLAGa1773e476 [2018-11-18 16:54:01,386 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/data/928781194/8ef2d8c3547b44e6a50074fd2f042014 [2018-11-18 16:54:01,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:54:01,389 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 16:54:01,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:54:01,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:54:01,391 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:54:01,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:54:01" (1/1) ... [2018-11-18 16:54:01,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2521d70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:01, skipping insertion in model container [2018-11-18 16:54:01,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:54:01" (1/1) ... [2018-11-18 16:54:01,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:54:01,415 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:54:01,513 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:54:01,515 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:54:01,527 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:54:01,537 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:54:01,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:01 WrapperNode [2018-11-18 16:54:01,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:54:01,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:54:01,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:54:01,538 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:54:01,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:01" (1/1) ... [2018-11-18 16:54:01,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:01" (1/1) ... [2018-11-18 16:54:01,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:01" (1/1) ... [2018-11-18 16:54:01,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:01" (1/1) ... [2018-11-18 16:54:01,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:01" (1/1) ... [2018-11-18 16:54:01,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:01" (1/1) ... [2018-11-18 16:54:01,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:01" (1/1) ... [2018-11-18 16:54:01,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:54:01,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:54:01,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:54:01,561 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:54:01,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:54:01,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:54:01,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:54:01,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:54:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 16:54:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:54:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 16:54:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 16:54:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 16:54:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 16:54:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:54:01,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:54:01,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 16:54:01,768 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:54:01,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:54:01 BoogieIcfgContainer [2018-11-18 16:54:01,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:54:01,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:54:01,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:54:01,771 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:54:01,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:54:01" (1/3) ... [2018-11-18 16:54:01,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a177dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:54:01, skipping insertion in model container [2018-11-18 16:54:01,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:54:01" (2/3) ... [2018-11-18 16:54:01,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a177dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:54:01, skipping insertion in model container [2018-11-18 16:54:01,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:54:01" (3/3) ... [2018-11-18 16:54:01,774 INFO L112 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig7_false-no-overflow.c [2018-11-18 16:54:01,782 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:54:01,789 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-18 16:54:01,802 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-18 16:54:01,826 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:54:01,826 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:54:01,827 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:54:01,827 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:54:01,827 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:54:01,827 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:54:01,827 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:54:01,827 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:54:01,827 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:54:01,841 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-18 16:54:01,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 16:54:01,846 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:01,846 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:54:01,848 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:54:01,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:01,853 INFO L82 PathProgramCache]: Analyzing trace with hash -2046627484, now seen corresponding path program 1 times [2018-11-18 16:54:01,855 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:01,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:01,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:01,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:01,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:54:01,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:54:01,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:54:01,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 16:54:01,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 16:54:01,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 16:54:01,986 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2018-11-18 16:54:02,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:02,054 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2018-11-18 16:54:02,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 16:54:02,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-18 16:54:02,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:02,061 INFO L225 Difference]: With dead ends: 70 [2018-11-18 16:54:02,061 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 16:54:02,063 INFO L604 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 [2018-11-18 16:54:02,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 16:54:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2018-11-18 16:54:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 16:54:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-11-18 16:54:02,089 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 11 [2018-11-18 16:54:02,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:02,089 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-11-18 16:54:02,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 16:54:02,090 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-11-18 16:54:02,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 16:54:02,090 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:02,090 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:54:02,091 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:54:02,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:02,091 INFO L82 PathProgramCache]: Analyzing trace with hash 226853634, now seen corresponding path program 1 times [2018-11-18 16:54:02,091 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:02,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:02,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:02,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:02,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:02,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:54:02,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:54:02,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:54:02,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:54:02,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:54:02,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:54:02,130 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 3 states. [2018-11-18 16:54:02,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:02,156 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-11-18 16:54:02,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:54:02,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-18 16:54:02,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:02,157 INFO L225 Difference]: With dead ends: 43 [2018-11-18 16:54:02,157 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 16:54:02,158 INFO L604 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 [2018-11-18 16:54:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 16:54:02,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-18 16:54:02,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 16:54:02,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-11-18 16:54:02,161 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 14 [2018-11-18 16:54:02,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:02,161 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-11-18 16:54:02,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:54:02,162 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-11-18 16:54:02,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 16:54:02,162 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:02,162 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:54:02,162 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:54:02,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:02,163 INFO L82 PathProgramCache]: Analyzing trace with hash -656570183, now seen corresponding path program 1 times [2018-11-18 16:54:02,163 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:02,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:02,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:02,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:02,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:54:02,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:54:02,230 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/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 [2018-11-18 16:54:02,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:02,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:54:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:54:02,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:54:02,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-18 16:54:02,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 16:54:02,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 16:54:02,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:54:02,340 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 8 states. [2018-11-18 16:54:02,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:02,397 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-11-18 16:54:02,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 16:54:02,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-11-18 16:54:02,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:02,398 INFO L225 Difference]: With dead ends: 50 [2018-11-18 16:54:02,398 INFO L226 Difference]: Without dead ends: 49 [2018-11-18 16:54:02,398 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-11-18 16:54:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-18 16:54:02,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2018-11-18 16:54:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 16:54:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-11-18 16:54:02,401 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 16 [2018-11-18 16:54:02,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:02,401 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-11-18 16:54:02,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 16:54:02,401 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-11-18 16:54:02,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 16:54:02,401 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:02,401 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:54:02,402 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:54:02,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:02,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1121160861, now seen corresponding path program 1 times [2018-11-18 16:54:02,402 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:02,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:02,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:02,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:02,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:54:02,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:54:02,455 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/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 [2018-11-18 16:54:02,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:02,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:54:02,497 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:54:02,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 16:54:02,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2018-11-18 16:54:02,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 16:54:02,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 16:54:02,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:54:02,513 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 8 states. [2018-11-18 16:54:02,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:02,543 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-11-18 16:54:02,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 16:54:02,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-18 16:54:02,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:02,544 INFO L225 Difference]: With dead ends: 35 [2018-11-18 16:54:02,544 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 16:54:02,544 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-18 16:54:02,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 16:54:02,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-18 16:54:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 16:54:02,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-11-18 16:54:02,548 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 17 [2018-11-18 16:54:02,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:02,548 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-11-18 16:54:02,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 16:54:02,548 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-11-18 16:54:02,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 16:54:02,548 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:02,548 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:54:02,549 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:54:02,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:02,549 INFO L82 PathProgramCache]: Analyzing trace with hash -650760307, now seen corresponding path program 1 times [2018-11-18 16:54:02,549 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:02,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:02,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:02,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:02,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:54:02,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:54:02,598 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/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 [2018-11-18 16:54:02,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:02,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:54:02,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 16:54:02,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 16:54:02,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2018-11-18 16:54:02,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 16:54:02,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 16:54:02,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-18 16:54:02,666 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 9 states. [2018-11-18 16:54:02,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:02,782 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2018-11-18 16:54:02,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 16:54:02,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-11-18 16:54:02,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:02,783 INFO L225 Difference]: With dead ends: 59 [2018-11-18 16:54:02,783 INFO L226 Difference]: Without dead ends: 58 [2018-11-18 16:54:02,784 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-11-18 16:54:02,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-18 16:54:02,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2018-11-18 16:54:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-18 16:54:02,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2018-11-18 16:54:02,788 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 19 [2018-11-18 16:54:02,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:02,789 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2018-11-18 16:54:02,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 16:54:02,789 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2018-11-18 16:54:02,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 16:54:02,789 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:02,790 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:54:02,790 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:54:02,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:02,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1301267040, now seen corresponding path program 1 times [2018-11-18 16:54:02,790 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:02,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:02,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:02,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:02,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:54:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 16:54:02,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:54:02,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:54:02,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:54:02,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:54:02,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:54:02,820 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 3 states. [2018-11-18 16:54:02,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:54:02,842 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-11-18 16:54:02,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:54:02,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-18 16:54:02,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:54:02,846 INFO L225 Difference]: With dead ends: 59 [2018-11-18 16:54:02,846 INFO L226 Difference]: Without dead ends: 58 [2018-11-18 16:54:02,846 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:54:02,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-18 16:54:02,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2018-11-18 16:54:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-18 16:54:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-11-18 16:54:02,849 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 20 [2018-11-18 16:54:02,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:54:02,850 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-11-18 16:54:02,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:54:02,850 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-11-18 16:54:02,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 16:54:02,850 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:54:02,850 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:54:02,851 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 16:54:02,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:54:02,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1684572655, now seen corresponding path program 1 times [2018-11-18 16:54:02,851 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:54:02,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:54:02,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:02,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:54:02,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:54:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:54:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:54:02,885 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:54:02,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:54:02 BoogieIcfgContainer [2018-11-18 16:54:02,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:54:02,903 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:54:02,904 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:54:02,904 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:54:02,904 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:54:01" (3/4) ... [2018-11-18 16:54:02,905 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 16:54:02,935 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d6470611-135b-469c-aff0-0deec963d556/bin-2019/uautomizer/witness.graphml [2018-11-18 16:54:02,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:54:02,936 INFO L168 Benchmark]: Toolchain (without parser) took 1547.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 959.2 MB in the beginning and 976.9 MB in the end (delta: -17.7 MB). Peak memory consumption was 110.8 MB. Max. memory is 11.5 GB. [2018-11-18 16:54:02,937 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:54:02,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.21 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:54:02,937 INFO L168 Benchmark]: Boogie Preprocessor took 23.32 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:54:02,937 INFO L168 Benchmark]: RCFGBuilder took 207.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:54:02,938 INFO L168 Benchmark]: TraceAbstraction took 1134.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.9 MB in the end (delta: 134.6 MB). Peak memory consumption was 134.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:54:02,938 INFO L168 Benchmark]: Witness Printer took 31.74 ms. Allocated memory is still 1.2 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:54:02,940 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 148.21 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.32 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 207.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1134.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.9 MB in the end (delta: 134.6 MB). Peak memory consumption was 134.6 MB. Max. memory is 11.5 GB. * Witness Printer took 31.74 ms. Allocated memory is still 1.2 GB. Free memory is still 976.9 MB. There was no memory consumed. 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] FCALL int a[a_length]; [L17] int j = 0; VAL [a={2147483649:0}, a_length=1, j=0] [L17] COND TRUE j < a_length [L18] FCALL 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, FCALL 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, FCALL 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, 31 locations, 6 error locations. UNSAFE Result, 1.0s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 130 SDtfs, 155 SDslu, 299 SDs, 0 SdLazy, 188 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 5378 SizeOfPredicates, 4 NumberOfNonLiveVariables, 185 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 9/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...