./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-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_7c11cc13-07cd-4383-9e69-86a693c55386/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/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 e334e85dd18553afecc96b27cf49a003304cbca8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 14:42:50,065 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:42:50,066 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:42:50,073 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:42:50,073 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:42:50,074 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:42:50,075 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:42:50,076 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:42:50,077 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:42:50,077 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:42:50,078 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:42:50,078 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:42:50,079 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:42:50,079 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:42:50,080 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:42:50,081 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:42:50,081 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:42:50,082 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:42:50,083 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:42:50,083 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:42:50,084 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:42:50,085 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:42:50,086 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:42:50,087 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:42:50,087 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:42:50,087 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:42:50,088 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:42:50,089 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:42:50,089 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:42:50,090 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:42:50,090 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:42:50,091 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:42:50,091 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:42:50,091 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:42:50,092 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:42:50,092 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:42:50,093 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-18 14:42:50,103 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:42:50,103 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:42:50,103 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 14:42:50,103 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 14:42:50,104 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 14:42:50,104 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 14:42:50,104 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 14:42:50,104 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:42:50,104 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 14:42:50,105 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:42:50,105 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:42:50,105 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 14:42:50,105 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:42:50,105 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 14:42:50,105 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 14:42:50,105 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:42:50,105 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:42:50,105 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 14:42:50,106 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:42:50,106 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:42:50,106 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:42:50,106 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:42:50,106 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:42:50,106 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:42:50,106 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:42:50,106 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 14:42:50,107 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 14:42:50,107 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:42:50,107 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 14:42:50,107 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_7c11cc13-07cd-4383-9e69-86a693c55386/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 -> e334e85dd18553afecc96b27cf49a003304cbca8 [2018-11-18 14:42:50,128 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:42:50,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:42:50,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:42:50,141 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:42:50,141 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:42:50,141 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c [2018-11-18 14:42:50,195 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/bin-2019/uautomizer/data/9fe3a9636/8edd52df09244140801117f6385ff005/FLAG1b3cbe990 [2018-11-18 14:42:50,522 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:42:50,522 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c [2018-11-18 14:42:50,526 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/bin-2019/uautomizer/data/9fe3a9636/8edd52df09244140801117f6385ff005/FLAG1b3cbe990 [2018-11-18 14:42:50,965 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/bin-2019/uautomizer/data/9fe3a9636/8edd52df09244140801117f6385ff005 [2018-11-18 14:42:50,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:42:50,969 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 14:42:50,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:42:50,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:42:50,973 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:42:50,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:42:50" (1/1) ... [2018-11-18 14:42:50,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c1dd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:42:50, skipping insertion in model container [2018-11-18 14:42:50,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:42:50" (1/1) ... [2018-11-18 14:42:50,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:42:50,998 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:42:51,108 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:42:51,110 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:42:51,120 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:42:51,128 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:42:51,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:42:51 WrapperNode [2018-11-18 14:42:51,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:42:51,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:42:51,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:42:51,129 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:42:51,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:42:51" (1/1) ... [2018-11-18 14:42:51,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:42:51" (1/1) ... [2018-11-18 14:42:51,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:42:51" (1/1) ... [2018-11-18 14:42:51,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:42:51" (1/1) ... [2018-11-18 14:42:51,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:42:51" (1/1) ... [2018-11-18 14:42:51,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:42:51" (1/1) ... [2018-11-18 14:42:51,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:42:51" (1/1) ... [2018-11-18 14:42:51,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:42:51,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:42:51,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:42:51,153 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:42:51,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:42:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/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 14:42:51,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:42:51,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:42:51,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:42:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 14:42:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:42:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:42:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:42:51,506 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:42:51,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:42:51 BoogieIcfgContainer [2018-11-18 14:42:51,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:42:51,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:42:51,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:42:51,510 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:42:51,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:42:50" (1/3) ... [2018-11-18 14:42:51,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb9ab6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:42:51, skipping insertion in model container [2018-11-18 14:42:51,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:42:51" (2/3) ... [2018-11-18 14:42:51,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb9ab6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:42:51, skipping insertion in model container [2018-11-18 14:42:51,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:42:51" (3/3) ... [2018-11-18 14:42:51,518 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c [2018-11-18 14:42:51,524 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:42:51,529 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-18 14:42:51,543 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-18 14:42:51,565 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 14:42:51,565 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:42:51,566 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 14:42:51,566 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:42:51,566 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:42:51,566 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:42:51,566 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:42:51,566 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:42:51,566 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:42:51,581 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-18 14:42:51,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 14:42:51,585 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:42:51,585 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:42:51,587 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 14:42:51,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:42:51,592 INFO L82 PathProgramCache]: Analyzing trace with hash 409964900, now seen corresponding path program 1 times [2018-11-18 14:42:51,594 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:42:51,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:42:51,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:42:51,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:42:51,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:42:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:42:51,707 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 14:42:51,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:42:51,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:42:51,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 14:42:51,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 14:42:51,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:42:51,721 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2018-11-18 14:42:51,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:42:51,786 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2018-11-18 14:42:51,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 14:42:51,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 14:42:51,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:42:51,794 INFO L225 Difference]: With dead ends: 36 [2018-11-18 14:42:51,794 INFO L226 Difference]: Without dead ends: 22 [2018-11-18 14:42:51,796 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 14:42:51,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-18 14:42:51,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-11-18 14:42:51,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 14:42:51,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-11-18 14:42:51,817 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2018-11-18 14:42:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:42:51,818 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-11-18 14:42:51,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 14:42:51,818 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-11-18 14:42:51,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 14:42:51,818 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:42:51,818 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:42:51,819 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 14:42:51,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:42:51,819 INFO L82 PathProgramCache]: Analyzing trace with hash -175989934, now seen corresponding path program 1 times [2018-11-18 14:42:51,819 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:42:51,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:42:51,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:42:51,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:42:51,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:42:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:42:51,841 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 14:42:51,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:42:51,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:42:51,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 14:42:51,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 14:42:51,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:42:51,843 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2018-11-18 14:42:51,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:42:51,864 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-11-18 14:42:51,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 14:42:51,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 14:42:51,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:42:51,865 INFO L225 Difference]: With dead ends: 21 [2018-11-18 14:42:51,865 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 14:42:51,866 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 14:42:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 14:42:51,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-18 14:42:51,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 14:42:51,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-11-18 14:42:51,869 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2018-11-18 14:42:51,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:42:51,869 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-11-18 14:42:51,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 14:42:51,870 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-11-18 14:42:51,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 14:42:51,870 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:42:51,870 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:42:51,871 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 14:42:51,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:42:51,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1160720602, now seen corresponding path program 1 times [2018-11-18 14:42:51,871 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:42:51,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:42:51,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:42:51,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:42:51,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:42:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:42:51,917 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 14:42:51,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:42:51,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 14:42:51,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 14:42:51,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 14:42:51,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 14:42:51,918 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2018-11-18 14:42:51,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:42:51,938 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-11-18 14:42:51,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 14:42:51,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-18 14:42:51,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:42:51,940 INFO L225 Difference]: With dead ends: 20 [2018-11-18 14:42:51,940 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 14:42:51,940 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 14:42:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 14:42:51,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-18 14:42:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 14:42:51,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-18 14:42:51,944 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2018-11-18 14:42:51,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:42:51,944 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-18 14:42:51,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 14:42:51,944 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-18 14:42:51,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 14:42:51,945 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:42:51,945 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:42:51,945 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 14:42:51,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:42:51,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1622600236, now seen corresponding path program 1 times [2018-11-18 14:42:51,945 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:42:51,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:42:51,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:42:51,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:42:51,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:42:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:42:51,970 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 14:42:51,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:42:51,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:42:51,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 14:42:51,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 14:42:51,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:42:51,971 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2018-11-18 14:42:51,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:42:51,986 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-11-18 14:42:51,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 14:42:51,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-18 14:42:51,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:42:51,987 INFO L225 Difference]: With dead ends: 21 [2018-11-18 14:42:51,987 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 14:42:51,988 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 14:42:51,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 14:42:51,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2018-11-18 14:42:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 14:42:51,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-11-18 14:42:51,990 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2018-11-18 14:42:51,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:42:51,991 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-18 14:42:51,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 14:42:51,991 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-11-18 14:42:51,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 14:42:51,991 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:42:51,991 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:42:51,992 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 14:42:51,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:42:51,992 INFO L82 PathProgramCache]: Analyzing trace with hash 108357052, now seen corresponding path program 1 times [2018-11-18 14:42:51,992 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:42:51,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:42:51,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:42:51,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:42:51,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:42:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:42:52,029 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 14:42:52,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:42:52,029 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/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 14:42:52,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:42:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:42:52,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:42:52,079 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 14:42:52,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:42:52,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-18 14:42:52,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 14:42:52,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 14:42:52,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 14:42:52,098 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2018-11-18 14:42:52,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:42:52,176 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-11-18 14:42:52,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 14:42:52,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-18 14:42:52,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:42:52,179 INFO L225 Difference]: With dead ends: 27 [2018-11-18 14:42:52,179 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 14:42:52,180 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 14:42:52,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 14:42:52,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-11-18 14:42:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 14:42:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-11-18 14:42:52,185 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2018-11-18 14:42:52,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:42:52,186 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-18 14:42:52,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 14:42:52,186 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-11-18 14:42:52,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 14:42:52,186 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:42:52,186 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:42:52,187 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 14:42:52,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:42:52,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1734377060, now seen corresponding path program 2 times [2018-11-18 14:42:52,187 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:42:52,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:42:52,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:42:52,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:42:52,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:42:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:42:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:42:52,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:42:52,262 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/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 14:42:52,269 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 14:42:52,296 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 14:42:52,296 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:42:52,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:42:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-18 14:42:52,345 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:42:52,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-11-18 14:42:52,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 14:42:52,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 14:42:52,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 14:42:52,346 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 7 states. [2018-11-18 14:42:52,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:42:52,408 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2018-11-18 14:42:52,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 14:42:52,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-11-18 14:42:52,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:42:52,409 INFO L225 Difference]: With dead ends: 38 [2018-11-18 14:42:52,409 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 14:42:52,410 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-11-18 14:42:52,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 14:42:52,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 14:42:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 14:42:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 14:42:52,411 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-11-18 14:42:52,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:42:52,411 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 14:42:52,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 14:42:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 14:42:52,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 14:42:52,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 14:42:52,431 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:42:52,449 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 14:42:52,450 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 14:42:52,450 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 14:42:52,450 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 14:42:52,450 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 14:42:52,450 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 14:42:52,450 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 13 30) no Hoare annotation was computed. [2018-11-18 14:42:52,450 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-18 14:42:52,450 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-18 14:42:52,451 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 26) no Hoare annotation was computed. [2018-11-18 14:42:52,451 INFO L421 ceAbstractionStarter]: At program point L21-2(lines 20 27) the Hoare annotation is: (and (<= main_~n~0 2147483647) (<= 0 main_~v2~0) (<= main_~m~0 2147483647) (<= main_~v1~0 2147483647)) [2018-11-18 14:42:52,451 INFO L425 ceAbstractionStarter]: For program point L17(lines 17 28) no Hoare annotation was computed. [2018-11-18 14:42:52,451 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 14:42:52,451 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 28) no Hoare annotation was computed. [2018-11-18 14:42:52,451 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 13 30) no Hoare annotation was computed. [2018-11-18 14:42:52,452 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-18 14:42:52,452 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 13 30) the Hoare annotation is: true [2018-11-18 14:42:52,455 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-18 14:42:52,455 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-18 14:42:52,455 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 27) no Hoare annotation was computed. [2018-11-18 14:42:52,455 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 14:42:52,456 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-18 14:42:52,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:42:52 BoogieIcfgContainer [2018-11-18 14:42:52,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 14:42:52,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:42:52,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:42:52,466 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:42:52,466 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:42:51" (3/4) ... [2018-11-18 14:42:52,469 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 14:42:52,473 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 14:42:52,474 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 14:42:52,477 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 14:42:52,477 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 14:42:52,478 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 14:42:52,478 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 14:42:52,509 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7c11cc13-07cd-4383-9e69-86a693c55386/bin-2019/uautomizer/witness.graphml [2018-11-18 14:42:52,510 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:42:52,510 INFO L168 Benchmark]: Toolchain (without parser) took 1542.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 963.4 MB in the beginning and 1.1 GB in the end (delta: -86.8 MB). Peak memory consumption was 74.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:42:52,512 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:42:52,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.28 ms. Allocated memory is still 1.0 GB. Free memory was 963.4 MB in the beginning and 952.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:42:52,513 INFO L168 Benchmark]: Boogie Preprocessor took 23.36 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 947.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 14:42:52,513 INFO L168 Benchmark]: RCFGBuilder took 354.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -196.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2018-11-18 14:42:52,514 INFO L168 Benchmark]: TraceAbstraction took 957.77 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: 86.9 MB). Peak memory consumption was 86.9 MB. Max. memory is 11.5 GB. [2018-11-18 14:42:52,514 INFO L168 Benchmark]: Witness Printer took 44.17 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-18 14:42:52,518 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 159.28 ms. Allocated memory is still 1.0 GB. Free memory was 963.4 MB in the beginning and 952.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.36 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 947.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 354.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -196.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 957.77 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: 86.9 MB). Peak memory consumption was 86.9 MB. Max. memory is 11.5 GB. * Witness Printer took 44.17 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((n <= 2147483647 && 0 <= v2) && m <= 2147483647) && v1 <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 4 error locations. SAFE Result, 0.8s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 79 SDtfs, 48 SDslu, 86 SDs, 0 SdLazy, 61 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=5, 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, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 9 NumberOfFragments, 17 HoareAnnotationTreeSize, 5 FomulaSimplifications, 86 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 128 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 4868 SizeOfPredicates, 1 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 13/38 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...