./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/nested5_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested5_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58c483ef37358c272383ba8c3b69f22948f7d8e5 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 13:15:54,552 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:15:54,553 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:15:54,561 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:15:54,561 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:15:54,562 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:15:54,563 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:15:54,564 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:15:54,565 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:15:54,566 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:15:54,567 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:15:54,567 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:15:54,568 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:15:54,568 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:15:54,569 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:15:54,569 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:15:54,570 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:15:54,571 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:15:54,572 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:15:54,573 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:15:54,574 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:15:54,575 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:15:54,576 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:15:54,576 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:15:54,576 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:15:54,577 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:15:54,577 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:15:54,578 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:15:54,578 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:15:54,579 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:15:54,579 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:15:54,580 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:15:54,580 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:15:54,580 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:15:54,581 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:15:54,582 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:15:54,582 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 13:15:54,590 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:15:54,590 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:15:54,591 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:15:54,591 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:15:54,591 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:15:54,591 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:15:54,592 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:15:54,592 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:15:54,592 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:15:54,592 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:15:54,592 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:15:54,592 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:15:54,592 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:15:54,593 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:15:54,593 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:15:54,593 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:15:54,593 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:15:54,593 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:15:54,593 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:15:54,593 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:15:54,593 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:15:54,594 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:15:54,594 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:15:54,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:15:54,594 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:15:54,594 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:15:54,594 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:15:54,594 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:15:54,594 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:15:54,595 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 13:15:54,595 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_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/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 ! call(__VERIFIER_error())) ) 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 -> 58c483ef37358c272383ba8c3b69f22948f7d8e5 [2018-11-28 13:15:54,621 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:15:54,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:15:54,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:15:54,633 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:15:54,633 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:15:54,634 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/bin-2019/uautomizer/../../sv-benchmarks/c/loops-crafted-1/nested5_true-unreach-call.c [2018-11-28 13:15:54,674 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/bin-2019/uautomizer/data/596975180/23e9ffcfbd9242d1855ccc729b07d53e/FLAG64d196ba3 [2018-11-28 13:15:55,010 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:15:55,011 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/sv-benchmarks/c/loops-crafted-1/nested5_true-unreach-call.c [2018-11-28 13:15:55,014 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/bin-2019/uautomizer/data/596975180/23e9ffcfbd9242d1855ccc729b07d53e/FLAG64d196ba3 [2018-11-28 13:15:55,436 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/bin-2019/uautomizer/data/596975180/23e9ffcfbd9242d1855ccc729b07d53e [2018-11-28 13:15:55,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:15:55,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:15:55,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:15:55,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:15:55,443 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:15:55,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:15:55" (1/1) ... [2018-11-28 13:15:55,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d2c00d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:55, skipping insertion in model container [2018-11-28 13:15:55,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:15:55" (1/1) ... [2018-11-28 13:15:55,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:15:55,462 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:15:55,569 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:15:55,572 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:15:55,583 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:15:55,594 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:15:55,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:55 WrapperNode [2018-11-28 13:15:55,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:15:55,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:15:55,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:15:55,595 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:15:55,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:55" (1/1) ... [2018-11-28 13:15:55,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:55" (1/1) ... [2018-11-28 13:15:55,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:15:55,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:15:55,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:15:55,612 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:15:55,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:55" (1/1) ... [2018-11-28 13:15:55,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:55" (1/1) ... [2018-11-28 13:15:55,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:55" (1/1) ... [2018-11-28 13:15:55,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:55" (1/1) ... [2018-11-28 13:15:55,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:55" (1/1) ... [2018-11-28 13:15:55,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:55" (1/1) ... [2018-11-28 13:15:55,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:55" (1/1) ... [2018-11-28 13:15:55,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:15:55,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:15:55,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:15:55,628 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:15:55,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/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 [2018-11-28 13:15:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:15:55,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:15:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:15:55,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:15:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:15:55,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:15:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 13:15:55,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 13:15:55,868 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:15:55,868 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 13:15:55,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:15:55 BoogieIcfgContainer [2018-11-28 13:15:55,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:15:55,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:15:55,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:15:55,871 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:15:55,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:15:55" (1/3) ... [2018-11-28 13:15:55,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c2c3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:15:55, skipping insertion in model container [2018-11-28 13:15:55,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:55" (2/3) ... [2018-11-28 13:15:55,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c2c3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:15:55, skipping insertion in model container [2018-11-28 13:15:55,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:15:55" (3/3) ... [2018-11-28 13:15:55,874 INFO L112 eAbstractionObserver]: Analyzing ICFG nested5_true-unreach-call.c [2018-11-28 13:15:55,880 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:15:55,885 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 13:15:55,898 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 13:15:55,924 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:15:55,924 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:15:55,925 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:15:55,925 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:15:55,925 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:15:55,925 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:15:55,925 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:15:55,925 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:15:55,925 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:15:55,939 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-11-28 13:15:55,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 13:15:55,943 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:55,944 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:55,945 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:55,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:55,949 INFO L82 PathProgramCache]: Analyzing trace with hash -84144223, now seen corresponding path program 1 times [2018-11-28 13:15:55,950 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:55,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:55,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:55,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:55,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:15:56,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:15:56,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:15:56,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 13:15:56,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 13:15:56,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 13:15:56,041 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2018-11-28 13:15:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:56,055 INFO L93 Difference]: Finished difference Result 47 states and 68 transitions. [2018-11-28 13:15:56,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 13:15:56,056 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-11-28 13:15:56,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:56,062 INFO L225 Difference]: With dead ends: 47 [2018-11-28 13:15:56,062 INFO L226 Difference]: Without dead ends: 22 [2018-11-28 13:15:56,064 INFO L631 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 [2018-11-28 13:15:56,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-28 13:15:56,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-28 13:15:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 13:15:56,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2018-11-28 13:15:56,089 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2018-11-28 13:15:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:56,089 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2018-11-28 13:15:56,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 13:15:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2018-11-28 13:15:56,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 13:15:56,090 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:56,090 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:56,090 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:56,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:56,091 INFO L82 PathProgramCache]: Analyzing trace with hash -89685349, now seen corresponding path program 1 times [2018-11-28 13:15:56,091 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:56,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:56,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:56,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:56,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:15:56,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:15:56,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:15:56,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:15:56,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:15:56,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:15:56,173 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2018-11-28 13:15:56,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:56,207 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2018-11-28 13:15:56,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:15:56,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-28 13:15:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:56,208 INFO L225 Difference]: With dead ends: 48 [2018-11-28 13:15:56,208 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 13:15:56,209 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:15:56,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 13:15:56,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2018-11-28 13:15:56,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 13:15:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-11-28 13:15:56,214 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 14 [2018-11-28 13:15:56,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:56,214 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-11-28 13:15:56,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:15:56,214 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-11-28 13:15:56,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 13:15:56,214 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:56,215 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:56,215 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:56,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:56,215 INFO L82 PathProgramCache]: Analyzing trace with hash 374245081, now seen corresponding path program 1 times [2018-11-28 13:15:56,215 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:56,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:56,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:56,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:56,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:15:56,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:56,291 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/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 [2018-11-28 13:15:56,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:56,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:15:56,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:56,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-28 13:15:56,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:15:56,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:15:56,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:15:56,380 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2018-11-28 13:15:56,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:56,414 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2018-11-28 13:15:56,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:15:56,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-28 13:15:56,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:56,415 INFO L225 Difference]: With dead ends: 51 [2018-11-28 13:15:56,415 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 13:15:56,416 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:15:56,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 13:15:56,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-11-28 13:15:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-28 13:15:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2018-11-28 13:15:56,419 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 16 [2018-11-28 13:15:56,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:56,419 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2018-11-28 13:15:56,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:15:56,419 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2018-11-28 13:15:56,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 13:15:56,419 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:56,419 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:56,420 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:56,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:56,420 INFO L82 PathProgramCache]: Analyzing trace with hash -465210473, now seen corresponding path program 2 times [2018-11-28 13:15:56,420 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:56,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:56,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:56,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:56,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:15:56,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:56,502 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:15:56,517 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:15:56,536 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:15:56,536 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:15:56,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:15:56,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:56,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-28 13:15:56,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:15:56,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:15:56,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:15:56,570 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 6 states. [2018-11-28 13:15:56,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:56,596 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2018-11-28 13:15:56,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:15:56,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-11-28 13:15:56,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:56,597 INFO L225 Difference]: With dead ends: 55 [2018-11-28 13:15:56,597 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 13:15:56,597 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:15:56,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 13:15:56,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2018-11-28 13:15:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-28 13:15:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2018-11-28 13:15:56,600 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2018-11-28 13:15:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:56,600 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2018-11-28 13:15:56,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:15:56,600 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2018-11-28 13:15:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 13:15:56,601 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:56,601 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:56,601 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:56,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:56,601 INFO L82 PathProgramCache]: Analyzing trace with hash 271853781, now seen corresponding path program 3 times [2018-11-28 13:15:56,601 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:56,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:56,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:56,602 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:15:56,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:15:56,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:56,716 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:15:56,728 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:15:56,762 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-28 13:15:56,763 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:15:56,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:16:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 13:16:05,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 13:16:05,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-28 13:16:05,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 13:16:05,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 13:16:05,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=77, Unknown=4, NotChecked=0, Total=110 [2018-11-28 13:16:05,581 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 11 states. [2018-11-28 13:16:07,986 WARN L180 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 24 [2018-11-28 13:16:14,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:16:14,122 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2018-11-28 13:16:14,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 13:16:14,122 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-11-28 13:16:14,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:16:14,123 INFO L225 Difference]: With dead ends: 58 [2018-11-28 13:16:14,123 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 13:16:14,123 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=47, Invalid=131, Unknown=4, NotChecked=0, Total=182 [2018-11-28 13:16:14,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 13:16:14,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 13:16:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 13:16:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 13:16:14,124 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-11-28 13:16:14,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:16:14,124 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:16:14,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 13:16:14,124 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 13:16:14,124 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 13:16:14,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 13:16:14,214 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 13:16:14,214 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:16:14,214 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:16:14,214 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 13:16:14,214 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 13:16:14,214 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 13:16:14,214 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2018-11-28 13:16:14,215 INFO L444 ceAbstractionStarter]: At program point L19-2(lines 19 22) the Hoare annotation is: (or (and (<= main_~v~0 0) (<= 0 main_~v~0)) (and (<= 10 (mod main_~v~0 4294967296)) (< (mod (+ main_~v~0 4294967295) 4294967296) 10))) [2018-11-28 13:16:14,215 INFO L448 ceAbstractionStarter]: For program point L20-2(line 20) no Hoare annotation was computed. [2018-11-28 13:16:14,215 INFO L444 ceAbstractionStarter]: At program point L20-3(line 20) the Hoare annotation is: (or (and (<= main_~v~0 0) (< 0 (+ (div main_~v~0 4294967296) 1))) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2018-11-28 13:16:14,215 INFO L444 ceAbstractionStarter]: At program point L20-4(line 20) the Hoare annotation is: (and (<= 10 (mod main_~v~0 4294967296)) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2018-11-28 13:16:14,215 INFO L448 ceAbstractionStarter]: For program point L16-2(lines 16 22) no Hoare annotation was computed. [2018-11-28 13:16:14,215 INFO L444 ceAbstractionStarter]: At program point L16-3(lines 16 22) the Hoare annotation is: (or (and (<= main_~v~0 0) (<= 0 main_~v~0)) (and (<= 10 (mod main_~v~0 4294967296)) (< (mod (+ main_~v~0 4294967295) 4294967296) 10))) [2018-11-28 13:16:14,217 INFO L448 ceAbstractionStarter]: For program point L16-4(lines 10 23) no Hoare annotation was computed. [2018-11-28 13:16:14,217 INFO L448 ceAbstractionStarter]: For program point L21(lines 19 22) no Hoare annotation was computed. [2018-11-28 13:16:14,217 INFO L448 ceAbstractionStarter]: For program point L17-2(lines 17 22) no Hoare annotation was computed. [2018-11-28 13:16:14,218 INFO L444 ceAbstractionStarter]: At program point L17-3(lines 17 22) the Hoare annotation is: (or (and (<= main_~v~0 0) (<= 0 main_~v~0)) (and (<= 10 (mod main_~v~0 4294967296)) (< (mod (+ main_~v~0 4294967295) 4294967296) 10))) [2018-11-28 13:16:14,218 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2018-11-28 13:16:14,218 INFO L448 ceAbstractionStarter]: For program point L18-2(lines 18 22) no Hoare annotation was computed. [2018-11-28 13:16:14,218 INFO L444 ceAbstractionStarter]: At program point L18-3(lines 18 22) the Hoare annotation is: (or (and (<= main_~v~0 0) (<= 0 main_~v~0)) (and (<= 10 (mod main_~v~0 4294967296)) (< (mod (+ main_~v~0 4294967295) 4294967296) 10))) [2018-11-28 13:16:14,218 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-28 13:16:14,218 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-28 13:16:14,218 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-28 13:16:14,218 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-28 13:16:14,219 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-28 13:16:14,219 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-28 13:16:14,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:16:14 BoogieIcfgContainer [2018-11-28 13:16:14,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:16:14,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:16:14,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:16:14,229 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:16:14,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:15:55" (3/4) ... [2018-11-28 13:16:14,232 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 13:16:14,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 13:16:14,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 13:16:14,237 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 13:16:14,240 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-11-28 13:16:14,240 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-28 13:16:14,241 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 13:16:14,273 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0b0089ff-f14b-48fe-9d9c-73b8e27680b8/bin-2019/uautomizer/witness.graphml [2018-11-28 13:16:14,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:16:14,274 INFO L168 Benchmark]: Toolchain (without parser) took 18835.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 950.6 MB in the beginning and 975.6 MB in the end (delta: -24.9 MB). Peak memory consumption was 107.2 MB. Max. memory is 11.5 GB. [2018-11-28 13:16:14,274 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 971.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:16:14,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.05 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 939.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:16:14,275 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.99 ms. Allocated memory is still 1.0 GB. Free memory is still 939.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:16:14,275 INFO L168 Benchmark]: Boogie Preprocessor took 16.17 ms. Allocated memory is still 1.0 GB. Free memory was 939.9 MB in the beginning and 934.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 13:16:14,275 INFO L168 Benchmark]: RCFGBuilder took 240.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 934.5 MB in the beginning and 1.1 GB in the end (delta: -181.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-11-28 13:16:14,276 INFO L168 Benchmark]: TraceAbstraction took 18359.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 975.6 MB in the end (delta: 140.8 MB). Peak memory consumption was 140.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:16:14,276 INFO L168 Benchmark]: Witness Printer took 44.58 ms. Allocated memory is still 1.2 GB. Free memory is still 975.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:16:14,278 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 971.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 155.05 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 939.9 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 15.99 ms. Allocated memory is still 1.0 GB. Free memory is still 939.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.17 ms. Allocated memory is still 1.0 GB. Free memory was 939.9 MB in the beginning and 934.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 240.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 934.5 MB in the beginning and 1.1 GB in the end (delta: -181.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18359.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 975.6 MB in the end (delta: 140.8 MB). Peak memory consumption was 140.8 MB. Max. memory is 11.5 GB. * Witness Printer took 44.58 ms. Allocated memory is still 1.2 GB. Free memory is still 975.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (v <= 0 && 0 < v / 4294967296 + 1) || (v + 4294967295) % 4294967296 < 10 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (v <= 0 && 0 <= v) || (10 <= v % 4294967296 && (v + 4294967295) % 4294967296 < 10) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (v <= 0 && 0 <= v) || (10 <= v % 4294967296 && (v + 4294967295) % 4294967296 < 10) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (v <= 0 && 0 <= v) || (10 <= v % 4294967296 && (v + 4294967295) % 4294967296 < 10) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (v <= 0 && 0 <= v) || (10 <= v % 4294967296 && (v + 4294967295) % 4294967296 < 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. SAFE Result, 18.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 8.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 130 SDtfs, 88 SDslu, 226 SDs, 0 SdLazy, 113 SolverSat, 22 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 16 PreInvPairs, 31 NumberOfFragments, 121 HoareAnnotationTreeSize, 16 FomulaSimplifications, 31 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 136 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 128 ConstructedInterpolants, 2 QuantifiedInterpolants, 6262 SizeOfPredicates, 4 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 9/28 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...