./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/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 32bit --witnessprinter.graph.data.programhash 3bf945356a28265a842df89cdbf40bfa9a223140 ................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 07:03:46,706 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 07:03:46,707 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 07:03:46,714 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 07:03:46,714 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 07:03:46,714 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 07:03:46,715 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 07:03:46,716 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 07:03:46,717 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 07:03:46,718 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 07:03:46,718 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 07:03:46,719 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 07:03:46,719 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 07:03:46,720 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 07:03:46,721 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 07:03:46,721 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 07:03:46,722 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 07:03:46,723 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 07:03:46,724 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 07:03:46,725 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 07:03:46,726 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 07:03:46,726 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 07:03:46,728 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 07:03:46,728 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 07:03:46,728 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 07:03:46,729 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 07:03:46,729 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 07:03:46,730 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 07:03:46,730 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 07:03:46,731 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 07:03:46,731 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 07:03:46,732 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 07:03:46,732 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 07:03:46,732 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 07:03:46,733 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 07:03:46,733 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 07:03:46,733 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2018-11-23 07:03:46,742 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 07:03:46,742 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 07:03:46,743 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 07:03:46,743 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 07:03:46,743 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 07:03:46,744 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 07:03:46,744 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 07:03:46,744 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 07:03:46,744 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 07:03:46,744 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 07:03:46,744 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 07:03:46,744 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 07:03:46,745 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 07:03:46,745 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 07:03:46,745 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 07:03:46,745 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 07:03:46,745 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 07:03:46,745 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 07:03:46,745 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 07:03:46,745 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 07:03:46,746 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 07:03:46,746 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 07:03:46,746 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 07:03:46,746 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 07:03:46,746 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 07:03:46,746 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 07:03:46,746 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 07:03:46,747 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 07:03:46,747 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 07:03:46,747 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 07:03:46,747 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 07:03:46,747 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 07:03:46,747 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_0f78738b-8104-4119-a5bd-3c44631ee2c2/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bf945356a28265a842df89cdbf40bfa9a223140 [2018-11-23 07:03:46,769 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 07:03:46,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 07:03:46,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 07:03:46,780 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 07:03:46,780 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 07:03:46,780 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c [2018-11-23 07:03:46,818 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/bin-2019/uautomizer/data/9cd41f3b6/bf0dc99118f0401b89f893f088c2efe0/FLAG411811ada [2018-11-23 07:03:47,119 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 07:03:47,119 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c [2018-11-23 07:03:47,123 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/bin-2019/uautomizer/data/9cd41f3b6/bf0dc99118f0401b89f893f088c2efe0/FLAG411811ada [2018-11-23 07:03:47,131 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/bin-2019/uautomizer/data/9cd41f3b6/bf0dc99118f0401b89f893f088c2efe0 [2018-11-23 07:03:47,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 07:03:47,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 07:03:47,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 07:03:47,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 07:03:47,139 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 07:03:47,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:03:47" (1/1) ... [2018-11-23 07:03:47,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337624aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:03:47, skipping insertion in model container [2018-11-23 07:03:47,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:03:47" (1/1) ... [2018-11-23 07:03:47,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 07:03:47,160 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 07:03:47,259 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:03:47,261 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 07:03:47,269 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:03:47,277 INFO L195 MainTranslator]: Completed translation [2018-11-23 07:03:47,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:03:47 WrapperNode [2018-11-23 07:03:47,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 07:03:47,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 07:03:47,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 07:03:47,278 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 07:03:47,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:03:47" (1/1) ... [2018-11-23 07:03:47,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:03:47" (1/1) ... [2018-11-23 07:03:47,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 07:03:47,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 07:03:47,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 07:03:47,289 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 07:03:47,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:03:47" (1/1) ... [2018-11-23 07:03:47,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:03:47" (1/1) ... [2018-11-23 07:03:47,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:03:47" (1/1) ... [2018-11-23 07:03:47,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:03:47" (1/1) ... [2018-11-23 07:03:47,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:03:47" (1/1) ... [2018-11-23 07:03:47,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:03:47" (1/1) ... [2018-11-23 07:03:47,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:03:47" (1/1) ... [2018-11-23 07:03:47,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 07:03:47,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 07:03:47,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 07:03:47,299 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 07:03:47,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:03:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/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 [2018-11-23 07:03:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 07:03:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 07:03:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 07:03:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 07:03:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 07:03:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 07:03:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-23 07:03:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-23 07:03:47,461 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 07:03:47,461 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 07:03:47,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:03:47 BoogieIcfgContainer [2018-11-23 07:03:47,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 07:03:47,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 07:03:47,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 07:03:47,464 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 07:03:47,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:03:47" (1/3) ... [2018-11-23 07:03:47,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18582848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:03:47, skipping insertion in model container [2018-11-23 07:03:47,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:03:47" (2/3) ... [2018-11-23 07:03:47,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18582848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:03:47, skipping insertion in model container [2018-11-23 07:03:47,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:03:47" (3/3) ... [2018-11-23 07:03:47,466 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c [2018-11-23 07:03:47,472 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 07:03:47,476 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-23 07:03:47,485 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-23 07:03:47,509 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 07:03:47,509 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 07:03:47,510 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 07:03:47,510 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 07:03:47,510 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 07:03:47,510 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 07:03:47,510 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 07:03:47,510 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 07:03:47,510 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 07:03:47,521 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-23 07:03:47,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 07:03:47,525 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:03:47,525 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:03:47,526 INFO L423 AbstractCegarLoop]: === Iteration 1 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 07:03:47,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:03:47,530 INFO L82 PathProgramCache]: Analyzing trace with hash 755938958, now seen corresponding path program 1 times [2018-11-23 07:03:47,531 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:03:47,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:03:47,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:03:47,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:03:47,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:03:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:03:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-23 07:03:47,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:03:47,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 07:03:47,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 07:03:47,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 07:03:47,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 07:03:47,655 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2018-11-23 07:03:47,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:03:47,713 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-11-23 07:03:47,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 07:03:47,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-23 07:03:47,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:03:47,722 INFO L225 Difference]: With dead ends: 35 [2018-11-23 07:03:47,723 INFO L226 Difference]: Without dead ends: 22 [2018-11-23 07:03:47,725 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 07:03:47,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-23 07:03:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-23 07:03:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-23 07:03:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-11-23 07:03:47,754 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 18 [2018-11-23 07:03:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:03:47,754 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-11-23 07:03:47,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 07:03:47,754 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-11-23 07:03:47,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-23 07:03:47,755 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:03:47,755 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:03:47,755 INFO L423 AbstractCegarLoop]: === Iteration 2 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 07:03:47,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:03:47,755 INFO L82 PathProgramCache]: Analyzing trace with hash 323921339, now seen corresponding path program 1 times [2018-11-23 07:03:47,756 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:03:47,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:03:47,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:03:47,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:03:47,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:03:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:03:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-23 07:03:47,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:03:47,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 07:03:47,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 07:03:47,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 07:03:47,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 07:03:47,801 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2018-11-23 07:03:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:03:47,833 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-23 07:03:47,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 07:03:47,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-11-23 07:03:47,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:03:47,834 INFO L225 Difference]: With dead ends: 33 [2018-11-23 07:03:47,835 INFO L226 Difference]: Without dead ends: 25 [2018-11-23 07:03:47,835 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 07:03:47,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-23 07:03:47,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-11-23 07:03:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-23 07:03:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-23 07:03:47,838 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 24 [2018-11-23 07:03:47,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:03:47,838 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-23 07:03:47,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 07:03:47,838 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-23 07:03:47,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-23 07:03:47,839 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:03:47,839 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:03:47,839 INFO L423 AbstractCegarLoop]: === Iteration 3 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 07:03:47,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:03:47,839 INFO L82 PathProgramCache]: Analyzing trace with hash 324844860, now seen corresponding path program 1 times [2018-11-23 07:03:47,839 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:03:47,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:03:47,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:03:47,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:03:47,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:03:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:03:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-23 07:03:47,897 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:03:47,897 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/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 [2018-11-23 07:03:47,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:03:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:03:47,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:03:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-23 07:03:47,991 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:03:47,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-11-23 07:03:47,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 07:03:47,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 07:03:47,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-23 07:03:47,993 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 9 states. [2018-11-23 07:03:48,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:03:48,047 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-11-23 07:03:48,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 07:03:48,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-11-23 07:03:48,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:03:48,048 INFO L225 Difference]: With dead ends: 29 [2018-11-23 07:03:48,048 INFO L226 Difference]: Without dead ends: 28 [2018-11-23 07:03:48,049 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-23 07:03:48,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-23 07:03:48,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-11-23 07:03:48,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-23 07:03:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-23 07:03:48,053 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2018-11-23 07:03:48,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:03:48,053 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-23 07:03:48,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 07:03:48,053 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-23 07:03:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 07:03:48,054 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:03:48,054 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:03:48,054 INFO L423 AbstractCegarLoop]: === Iteration 4 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 07:03:48,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:03:48,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1480256124, now seen corresponding path program 1 times [2018-11-23 07:03:48,055 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:03:48,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:03:48,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:03:48,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:03:48,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:03:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:03:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-23 07:03:48,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:03:48,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 07:03:48,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 07:03:48,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 07:03:48,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 07:03:48,089 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 3 states. [2018-11-23 07:03:48,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:03:48,095 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-11-23 07:03:48,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 07:03:48,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-11-23 07:03:48,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:03:48,096 INFO L225 Difference]: With dead ends: 27 [2018-11-23 07:03:48,096 INFO L226 Difference]: Without dead ends: 26 [2018-11-23 07:03:48,097 INFO L631 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 [2018-11-23 07:03:48,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-23 07:03:48,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-23 07:03:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-23 07:03:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-11-23 07:03:48,101 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 25 [2018-11-23 07:03:48,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:03:48,101 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-11-23 07:03:48,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 07:03:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-11-23 07:03:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-23 07:03:48,102 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:03:48,102 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:03:48,102 INFO L423 AbstractCegarLoop]: === Iteration 5 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 07:03:48,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:03:48,103 INFO L82 PathProgramCache]: Analyzing trace with hash 313120041, now seen corresponding path program 1 times [2018-11-23 07:03:48,103 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:03:48,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:03:48,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:03:48,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:03:48,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:03:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:03:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-11-23 07:03:48,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:03:48,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 07:03:48,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 07:03:48,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 07:03:48,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 07:03:48,153 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 4 states. [2018-11-23 07:03:48,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:03:48,163 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-11-23 07:03:48,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 07:03:48,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-23 07:03:48,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:03:48,163 INFO L225 Difference]: With dead ends: 26 [2018-11-23 07:03:48,163 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 07:03:48,164 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 07:03:48,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 07:03:48,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 07:03:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 07:03:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 07:03:48,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-11-23 07:03:48,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:03:48,164 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 07:03:48,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 07:03:48,164 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 07:03:48,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 07:03:48,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 07:03:48,180 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 07:03:48,181 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 07:03:48,181 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 07:03:48,181 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 07:03:48,181 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 07:03:48,181 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 07:03:48,181 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-23 07:03:48,181 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2018-11-23 07:03:48,181 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2018-11-23 07:03:48,181 INFO L451 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: true [2018-11-23 07:03:48,181 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-23 07:03:48,181 INFO L448 ceAbstractionStarter]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2018-11-23 07:03:48,181 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2018-11-23 07:03:48,182 INFO L448 ceAbstractionStarter]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2018-11-23 07:03:48,182 INFO L448 ceAbstractionStarter]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2018-11-23 07:03:48,182 INFO L451 ceAbstractionStarter]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2018-11-23 07:03:48,182 INFO L448 ceAbstractionStarter]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 6) no Hoare annotation was computed. [2018-11-23 07:03:48,182 INFO L448 ceAbstractionStarter]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 6) no Hoare annotation was computed. [2018-11-23 07:03:48,182 INFO L448 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2018-11-23 07:03:48,182 INFO L451 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: true [2018-11-23 07:03:48,182 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-23 07:03:48,182 INFO L448 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2018-11-23 07:03:48,182 INFO L448 ceAbstractionStarter]: For program point L6-2(line 6) no Hoare annotation was computed. [2018-11-23 07:03:48,182 INFO L448 ceAbstractionStarter]: For program point L6-3(line 6) no Hoare annotation was computed. [2018-11-23 07:03:48,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 07:03:48 BoogieIcfgContainer [2018-11-23 07:03:48,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 07:03:48,184 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 07:03:48,184 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 07:03:48,185 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 07:03:48,185 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:03:47" (3/4) ... [2018-11-23 07:03:48,187 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 07:03:48,191 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 07:03:48,192 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 07:03:48,192 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-11-23 07:03:48,195 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 07:03:48,195 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 07:03:48,196 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 07:03:48,223 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0f78738b-8104-4119-a5bd-3c44631ee2c2/bin-2019/uautomizer/witness.graphml [2018-11-23 07:03:48,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 07:03:48,224 INFO L168 Benchmark]: Toolchain (without parser) took 1089.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 959.1 MB in the beginning and 1.0 GB in the end (delta: -63.1 MB). Peak memory consumption was 64.3 MB. Max. memory is 11.5 GB. [2018-11-23 07:03:48,225 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:03:48,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 141.47 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:03:48,226 INFO L168 Benchmark]: Boogie Procedure Inliner took 10.93 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:03:48,226 INFO L168 Benchmark]: Boogie Preprocessor took 10.38 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:03:48,226 INFO L168 Benchmark]: RCFGBuilder took 162.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -164.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-23 07:03:48,226 INFO L168 Benchmark]: TraceAbstraction took 721.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 84.1 MB). Peak memory consumption was 84.1 MB. Max. memory is 11.5 GB. [2018-11-23 07:03:48,227 INFO L168 Benchmark]: Witness Printer took 39.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-23 07:03:48,228 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 141.47 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 10.93 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.38 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 162.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -164.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 721.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 84.1 MB). Peak memory consumption was 84.1 MB. Max. memory is 11.5 GB. * Witness Printer took 39.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 6]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 2 error locations. SAFE Result, 0.6s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 85 SDtfs, 10 SDslu, 188 SDs, 0 SdLazy, 82 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 5481 SizeOfPredicates, 1 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 84/92 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...