./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/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 2b2cc94eb5b8374a9980482fd0dfec59d6d2cf62 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 07:49:31,612 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:49:31,613 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:49:31,619 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:49:31,619 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:49:31,620 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:49:31,621 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:49:31,622 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:49:31,623 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:49:31,624 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:49:31,624 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:49:31,624 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:49:31,625 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:49:31,626 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:49:31,626 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:49:31,626 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:49:31,627 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:49:31,628 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:49:31,629 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:49:31,630 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:49:31,631 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:49:31,632 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:49:31,633 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:49:31,634 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:49:31,634 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:49:31,634 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:49:31,635 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:49:31,635 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:49:31,636 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:49:31,637 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:49:31,637 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:49:31,637 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:49:31,638 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:49:31,638 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:49:31,638 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:49:31,639 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:49:31,639 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-10 07:49:31,646 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:49:31,647 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:49:31,647 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 07:49:31,647 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 07:49:31,648 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 07:49:31,648 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 07:49:31,648 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 07:49:31,648 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:49:31,648 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 07:49:31,649 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 07:49:31,649 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:49:31,649 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 07:49:31,649 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 07:49:31,649 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 07:49:31,649 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 07:49:31,649 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:49:31,649 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 07:49:31,650 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:49:31,650 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 07:49:31,650 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 07:49:31,650 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 07:49:31,650 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 07:49:31,650 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:49:31,650 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 07:49:31,651 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 07:49:31,651 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 07:49:31,651 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 07:49:31,651 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 07:49:31,651 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_5f9ed132-b358-40b6-a630-6ab5c7a59301/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 -> 2b2cc94eb5b8374a9980482fd0dfec59d6d2cf62 [2018-11-10 07:49:31,678 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:49:31,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:49:31,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:49:31,691 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:49:31,691 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:49:31,692 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c [2018-11-10 07:49:31,736 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/bin-2019/uautomizer/data/5d387f3cf/9c3b7e2ba436430eabb5c2c33d291a6b/FLAG641d3b31a [2018-11-10 07:49:32,059 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:49:32,060 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c [2018-11-10 07:49:32,064 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/bin-2019/uautomizer/data/5d387f3cf/9c3b7e2ba436430eabb5c2c33d291a6b/FLAG641d3b31a [2018-11-10 07:49:32,075 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/bin-2019/uautomizer/data/5d387f3cf/9c3b7e2ba436430eabb5c2c33d291a6b [2018-11-10 07:49:32,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:49:32,080 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 07:49:32,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:49:32,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:49:32,084 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:49:32,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:49:32" (1/1) ... [2018-11-10 07:49:32,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac897aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:49:32, skipping insertion in model container [2018-11-10 07:49:32,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:49:32" (1/1) ... [2018-11-10 07:49:32,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:49:32,109 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:49:32,210 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:49:32,212 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:49:32,222 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:49:32,230 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:49:32,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:49:32 WrapperNode [2018-11-10 07:49:32,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:49:32,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:49:32,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:49:32,231 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:49:32,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:49:32" (1/1) ... [2018-11-10 07:49:32,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:49:32" (1/1) ... [2018-11-10 07:49:32,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:49:32" (1/1) ... [2018-11-10 07:49:32,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:49:32" (1/1) ... [2018-11-10 07:49:32,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:49:32" (1/1) ... [2018-11-10 07:49:32,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:49:32" (1/1) ... [2018-11-10 07:49:32,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:49:32" (1/1) ... [2018-11-10 07:49:32,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:49:32,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:49:32,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:49:32,248 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:49:32,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:49:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/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 [2018-11-10 07:49:32,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 07:49:32,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:49:32,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 07:49:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 07:49:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 07:49:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 07:49:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:49:32,410 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:49:32,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:49:32 BoogieIcfgContainer [2018-11-10 07:49:32,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:49:32,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 07:49:32,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 07:49:32,413 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 07:49:32,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 07:49:32" (1/3) ... [2018-11-10 07:49:32,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5023d5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:49:32, skipping insertion in model container [2018-11-10 07:49:32,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:49:32" (2/3) ... [2018-11-10 07:49:32,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5023d5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:49:32, skipping insertion in model container [2018-11-10 07:49:32,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:49:32" (3/3) ... [2018-11-10 07:49:32,416 INFO L112 eAbstractionObserver]: Analyzing ICFG Urban-WST2013-Fig2-modified1000_true-termination_true-no-overflow.c [2018-11-10 07:49:32,422 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 07:49:32,427 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-10 07:49:32,436 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-10 07:49:32,455 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 07:49:32,455 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 07:49:32,455 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 07:49:32,455 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 07:49:32,455 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 07:49:32,455 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 07:49:32,455 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 07:49:32,455 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 07:49:32,456 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 07:49:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-10 07:49:32,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 07:49:32,471 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:49:32,472 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:49:32,474 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:49:32,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:49:32,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1432253197, now seen corresponding path program 1 times [2018-11-10 07:49:32,479 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:49:32,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:49:32,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:49:32,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:49:32,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:49:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:49:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:49:32,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:49:32,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 07:49:32,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 07:49:32,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 07:49:32,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 07:49:32,563 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-11-10 07:49:32,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:49:32,573 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-11-10 07:49:32,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 07:49:32,574 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-11-10 07:49:32,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:49:32,580 INFO L225 Difference]: With dead ends: 39 [2018-11-10 07:49:32,580 INFO L226 Difference]: Without dead ends: 17 [2018-11-10 07:49:32,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 07:49:32,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-10 07:49:32,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-10 07:49:32,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-10 07:49:32,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-10 07:49:32,610 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2018-11-10 07:49:32,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:49:32,610 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-10 07:49:32,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 07:49:32,610 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-10 07:49:32,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 07:49:32,611 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:49:32,611 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:49:32,611 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:49:32,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:49:32,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1450187957, now seen corresponding path program 1 times [2018-11-10 07:49:32,611 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:49:32,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:49:32,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:49:32,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:49:32,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:49:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:49:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:49:32,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:49:32,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 07:49:32,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 07:49:32,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 07:49:32,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 07:49:32,643 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2018-11-10 07:49:32,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:49:32,676 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-11-10 07:49:32,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 07:49:32,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-10 07:49:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:49:32,677 INFO L225 Difference]: With dead ends: 33 [2018-11-10 07:49:32,677 INFO L226 Difference]: Without dead ends: 21 [2018-11-10 07:49:32,678 INFO L605 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 [2018-11-10 07:49:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-10 07:49:32,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-10 07:49:32,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-10 07:49:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-11-10 07:49:32,682 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2018-11-10 07:49:32,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:49:32,682 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-11-10 07:49:32,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 07:49:32,682 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-11-10 07:49:32,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 07:49:32,683 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:49:32,683 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:49:32,683 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:49:32,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:49:32,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1450187902, now seen corresponding path program 1 times [2018-11-10 07:49:32,683 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:49:32,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:49:32,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:49:32,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:49:32,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:49:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:49:32,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:49:32,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:49:32,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 07:49:32,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 07:49:32,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 07:49:32,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 07:49:32,708 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2018-11-10 07:49:32,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:49:32,725 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-10 07:49:32,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 07:49:32,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-10 07:49:32,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:49:32,726 INFO L225 Difference]: With dead ends: 23 [2018-11-10 07:49:32,726 INFO L226 Difference]: Without dead ends: 22 [2018-11-10 07:49:32,727 INFO L605 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 [2018-11-10 07:49:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-10 07:49:32,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-11-10 07:49:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-10 07:49:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-11-10 07:49:32,729 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2018-11-10 07:49:32,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:49:32,729 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-11-10 07:49:32,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 07:49:32,729 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-11-10 07:49:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 07:49:32,730 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:49:32,730 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:49:32,730 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:49:32,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:49:32,730 INFO L82 PathProgramCache]: Analyzing trace with hash -802592061, now seen corresponding path program 1 times [2018-11-10 07:49:32,730 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:49:32,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:49:32,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:49:32,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:49:32,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:49:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:49:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:49:32,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 07:49:32,769 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/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 [2018-11-10 07:49:32,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:49:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:49:32,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:49:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 07:49:32,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 07:49:32,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-11-10 07:49:32,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 07:49:32,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 07:49:32,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-10 07:49:32,818 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2018-11-10 07:49:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:49:32,881 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-11-10 07:49:32,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 07:49:32,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-10 07:49:32,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:49:32,882 INFO L225 Difference]: With dead ends: 38 [2018-11-10 07:49:32,882 INFO L226 Difference]: Without dead ends: 23 [2018-11-10 07:49:32,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-10 07:49:32,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-10 07:49:32,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-10 07:49:32,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-10 07:49:32,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-11-10 07:49:32,886 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 14 [2018-11-10 07:49:32,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:49:32,886 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-11-10 07:49:32,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 07:49:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-11-10 07:49:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 07:49:32,887 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:49:32,887 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:49:32,888 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:49:32,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:49:32,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1896632678, now seen corresponding path program 1 times [2018-11-10 07:49:32,888 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:49:32,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:49:32,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:49:32,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:49:32,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:49:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:49:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 07:49:32,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:49:32,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 07:49:32,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 07:49:32,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 07:49:32,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 07:49:32,935 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2018-11-10 07:49:32,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:49:32,946 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-11-10 07:49:32,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 07:49:32,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-10 07:49:32,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:49:32,947 INFO L225 Difference]: With dead ends: 23 [2018-11-10 07:49:32,947 INFO L226 Difference]: Without dead ends: 22 [2018-11-10 07:49:32,948 INFO L605 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 [2018-11-10 07:49:32,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-10 07:49:32,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-10 07:49:32,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-10 07:49:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-11-10 07:49:32,952 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2018-11-10 07:49:32,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:49:32,952 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-11-10 07:49:32,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 07:49:32,952 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-11-10 07:49:32,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 07:49:32,952 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:49:32,953 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:49:32,953 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:49:32,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:49:32,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1896634376, now seen corresponding path program 1 times [2018-11-10 07:49:32,953 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:49:32,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:49:32,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:49:32,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:49:32,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:49:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:49:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 07:49:32,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:49:32,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 07:49:32,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 07:49:32,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 07:49:32,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 07:49:32,983 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 3 states. [2018-11-10 07:49:32,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:49:32,998 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-11-10 07:49:32,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 07:49:32,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-10 07:49:32,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:49:32,999 INFO L225 Difference]: With dead ends: 22 [2018-11-10 07:49:32,999 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 07:49:32,999 INFO L605 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 [2018-11-10 07:49:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 07:49:32,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 07:49:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 07:49:33,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 07:49:33,000 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-11-10 07:49:33,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:49:33,000 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 07:49:33,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 07:49:33,000 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 07:49:33,000 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 07:49:33,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 07:49:33,023 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 07:49:33,023 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 07:49:33,023 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 07:49:33,023 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 07:49:33,023 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 07:49:33,023 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 07:49:33,024 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-10 07:49:33,024 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 14 27) no Hoare annotation was computed. [2018-11-10 07:49:33,024 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 23) no Hoare annotation was computed. [2018-11-10 07:49:33,024 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 25) no Hoare annotation was computed. [2018-11-10 07:49:33,024 INFO L421 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: (and (<= main_~x1~0 10) (<= 0 (+ main_~x1~0 2147483648)) (<= main_~x2~0 1000)) [2018-11-10 07:49:33,024 INFO L425 ceAbstractionStarter]: For program point L21-4(lines 21 23) no Hoare annotation was computed. [2018-11-10 07:49:33,024 INFO L421 ceAbstractionStarter]: At program point L19-3(lines 19 25) the Hoare annotation is: (<= 0 (+ main_~x1~0 2147483648)) [2018-11-10 07:49:33,025 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-10 07:49:33,025 INFO L425 ceAbstractionStarter]: For program point L19-4(lines 19 25) no Hoare annotation was computed. [2018-11-10 07:49:33,025 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 14 27) no Hoare annotation was computed. [2018-11-10 07:49:33,025 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-10 07:49:33,025 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 14 27) the Hoare annotation is: true [2018-11-10 07:49:33,025 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-10 07:49:33,025 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-10 07:49:33,025 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-10 07:49:33,025 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-10 07:49:33,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 07:49:33 BoogieIcfgContainer [2018-11-10 07:49:33,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 07:49:33,035 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 07:49:33,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 07:49:33,035 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 07:49:33,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:49:32" (3/4) ... [2018-11-10 07:49:33,038 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 07:49:33,042 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 07:49:33,042 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 07:49:33,045 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-10 07:49:33,045 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 07:49:33,045 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 07:49:33,074 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5f9ed132-b358-40b6-a630-6ab5c7a59301/bin-2019/uautomizer/witness.graphml [2018-11-10 07:49:33,074 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 07:49:33,075 INFO L168 Benchmark]: Toolchain (without parser) took 995.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -96.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2018-11-10 07:49:33,075 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:49:33,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.46 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 947.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-11-10 07:49:33,076 INFO L168 Benchmark]: Boogie Preprocessor took 16.68 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:49:33,076 INFO L168 Benchmark]: RCFGBuilder took 162.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -179.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-10 07:49:33,076 INFO L168 Benchmark]: TraceAbstraction took 623.88 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: 68.9 MB). Peak memory consumption was 68.9 MB. Max. memory is 11.5 GB. [2018-11-10 07:49:33,077 INFO L168 Benchmark]: Witness Printer took 39.10 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:49:33,079 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 150.46 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 947.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.68 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 162.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -179.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 623.88 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: 68.9 MB). Peak memory consumption was 68.9 MB. Max. memory is 11.5 GB. * Witness Printer took 39.10 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: 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 - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (x1 <= 10 && 0 <= x1 + 2147483648) && x2 <= 1000 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 <= x1 + 2147483648 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 4 error locations. SAFE Result, 0.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 84 SDtfs, 20 SDslu, 44 SDs, 0 SdLazy, 51 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 21 HoareAnnotationTreeSize, 6 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 2720 SizeOfPredicates, 0 NumberOfNonLiveVariables, 31 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 22/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...