./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/array-examples/sanfoundry_24_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/sanfoundry_24_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63b671e779f88a024ade70e8e63a2c2a737aca60 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:54:04,645 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:54:04,647 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:54:04,657 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:54:04,657 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:54:04,658 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:54:04,659 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:54:04,661 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:54:04,662 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:54:04,663 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:54:04,664 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:54:04,664 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:54:04,665 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:54:04,666 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:54:04,667 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:54:04,667 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:54:04,668 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:54:04,670 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:54:04,671 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:54:04,673 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:54:04,674 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:54:04,675 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:54:04,677 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:54:04,677 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:54:04,678 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:54:04,679 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:54:04,680 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:54:04,680 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:54:04,681 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:54:04,682 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:54:04,682 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:54:04,683 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:54:04,683 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:54:04,684 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:54:04,685 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:54:04,685 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:54:04,686 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 20:54:04,698 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:54:04,698 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:54:04,699 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:54:04,699 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 20:54:04,699 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 20:54:04,700 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 20:54:04,700 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 20:54:04,700 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 20:54:04,700 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 20:54:04,700 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 20:54:04,700 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 20:54:04,701 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:54:04,701 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:54:04,702 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:54:04,702 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:54:04,702 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:54:04,702 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:54:04,702 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:54:04,702 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:54:04,703 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:54:04,703 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:54:04,703 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:54:04,703 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:54:04,703 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:54:04,703 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:54:04,704 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:54:04,704 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:54:04,704 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:54:04,704 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:54:04,704 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:54:04,704 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 20:54:04,705 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:54:04,705 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:54:04,705 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 20:54:04,705 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan 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 -> Taipan 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 -> 63b671e779f88a024ade70e8e63a2c2a737aca60 [2018-10-26 20:54:04,738 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:54:04,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:54:04,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:54:04,762 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:54:04,762 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:54:04,763 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/../../sv-benchmarks/c/array-examples/sanfoundry_24_true-unreach-call_true-termination.i [2018-10-26 20:54:04,825 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/data/513028236/feb0d67ee4e34358860c4142644ad5fc/FLAG22ce91c85 [2018-10-26 20:54:05,221 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:54:05,222 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/sv-benchmarks/c/array-examples/sanfoundry_24_true-unreach-call_true-termination.i [2018-10-26 20:54:05,227 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/data/513028236/feb0d67ee4e34358860c4142644ad5fc/FLAG22ce91c85 [2018-10-26 20:54:05,238 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/data/513028236/feb0d67ee4e34358860c4142644ad5fc [2018-10-26 20:54:05,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:54:05,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:54:05,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:54:05,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:54:05,251 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:54:05,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:54:05" (1/1) ... [2018-10-26 20:54:05,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b298a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:54:05, skipping insertion in model container [2018-10-26 20:54:05,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:54:05" (1/1) ... [2018-10-26 20:54:05,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:54:05,281 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:54:05,411 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:54:05,415 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:54:05,433 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:54:05,453 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:54:05,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:54:05 WrapperNode [2018-10-26 20:54:05,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:54:05,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:54:05,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:54:05,457 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:54:05,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:54:05" (1/1) ... [2018-10-26 20:54:05,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:54:05" (1/1) ... [2018-10-26 20:54:05,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:54:05,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:54:05,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:54:05,497 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:54:05,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:54:05" (1/1) ... [2018-10-26 20:54:05,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:54:05" (1/1) ... [2018-10-26 20:54:05,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:54:05" (1/1) ... [2018-10-26 20:54:05,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:54:05" (1/1) ... [2018-10-26 20:54:05,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:54:05" (1/1) ... [2018-10-26 20:54:05,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:54:05" (1/1) ... [2018-10-26 20:54:05,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:54:05" (1/1) ... [2018-10-26 20:54:05,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:54:05,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:54:05,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:54:05,523 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:54:05,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:54:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/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 [2018-10-26 20:54:05,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:54:05,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:54:05,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:54:05,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:54:05,661 INFO L130 BoogieDeclarations]: Found specification of procedure printOdd [2018-10-26 20:54:05,661 INFO L138 BoogieDeclarations]: Found implementation of procedure printOdd [2018-10-26 20:54:05,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:54:05,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:54:05,662 INFO L130 BoogieDeclarations]: Found specification of procedure printEven [2018-10-26 20:54:05,662 INFO L138 BoogieDeclarations]: Found implementation of procedure printEven [2018-10-26 20:54:05,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 20:54:05,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 20:54:06,059 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:54:06,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:54:06 BoogieIcfgContainer [2018-10-26 20:54:06,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:54:06,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:54:06,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:54:06,062 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:54:06,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:54:05" (1/3) ... [2018-10-26 20:54:06,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fed1f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:54:06, skipping insertion in model container [2018-10-26 20:54:06,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:54:05" (2/3) ... [2018-10-26 20:54:06,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fed1f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:54:06, skipping insertion in model container [2018-10-26 20:54:06,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:54:06" (3/3) ... [2018-10-26 20:54:06,065 INFO L112 eAbstractionObserver]: Analyzing ICFG sanfoundry_24_true-unreach-call_true-termination.i [2018-10-26 20:54:06,072 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:54:06,078 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:54:06,092 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:54:06,120 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:54:06,120 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:54:06,121 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:54:06,121 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:54:06,121 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:54:06,121 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:54:06,121 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:54:06,121 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:54:06,137 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-10-26 20:54:06,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 20:54:06,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:54:06,142 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:54:06,144 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:54:06,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:54:06,149 INFO L82 PathProgramCache]: Analyzing trace with hash -2088741817, now seen corresponding path program 1 times [2018-10-26 20:54:06,150 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:54:06,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:54:06,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:54:06,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:54:06,187 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:54:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:54:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:54:06,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:54:06,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-26 20:54:06,581 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 20:54:06,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 20:54:06,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 20:54:06,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-26 20:54:06,600 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 9 states. [2018-10-26 20:54:07,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:54:07,066 INFO L93 Difference]: Finished difference Result 92 states and 121 transitions. [2018-10-26 20:54:07,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 20:54:07,068 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-26 20:54:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:54:07,078 INFO L225 Difference]: With dead ends: 92 [2018-10-26 20:54:07,078 INFO L226 Difference]: Without dead ends: 54 [2018-10-26 20:54:07,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-10-26 20:54:07,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-26 20:54:07,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2018-10-26 20:54:07,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-26 20:54:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-10-26 20:54:07,122 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 15 [2018-10-26 20:54:07,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:54:07,122 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-10-26 20:54:07,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 20:54:07,122 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-10-26 20:54:07,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-26 20:54:07,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:54:07,124 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:54:07,125 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:54:07,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:54:07,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1075871240, now seen corresponding path program 1 times [2018-10-26 20:54:07,126 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:54:07,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:54:07,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:54:07,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:54:07,127 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:54:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:54:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:54:07,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:54:07,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 20:54:07,195 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 20:54:07,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 20:54:07,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 20:54:07,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 20:54:07,196 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 5 states. [2018-10-26 20:54:07,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:54:07,249 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2018-10-26 20:54:07,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:54:07,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-10-26 20:54:07,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:54:07,250 INFO L225 Difference]: With dead ends: 72 [2018-10-26 20:54:07,250 INFO L226 Difference]: Without dead ends: 53 [2018-10-26 20:54:07,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 20:54:07,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-26 20:54:07,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2018-10-26 20:54:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-26 20:54:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-10-26 20:54:07,258 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 18 [2018-10-26 20:54:07,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:54:07,258 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-10-26 20:54:07,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 20:54:07,259 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-10-26 20:54:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-26 20:54:07,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:54:07,259 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:54:07,260 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:54:07,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:54:07,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1264280928, now seen corresponding path program 1 times [2018-10-26 20:54:07,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:54:07,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:54:07,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:54:07,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:54:07,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:54:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:54:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 20:54:07,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:54:07,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 20:54:07,378 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 20:54:07,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 20:54:07,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 20:54:07,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 20:54:07,379 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-10-26 20:54:07,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:54:07,754 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-10-26 20:54:07,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 20:54:07,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2018-10-26 20:54:07,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:54:07,763 INFO L225 Difference]: With dead ends: 51 [2018-10-26 20:54:07,764 INFO L226 Difference]: Without dead ends: 49 [2018-10-26 20:54:07,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-10-26 20:54:07,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-26 20:54:07,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2018-10-26 20:54:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-26 20:54:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-10-26 20:54:07,771 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 19 [2018-10-26 20:54:07,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:54:07,772 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-10-26 20:54:07,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 20:54:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-10-26 20:54:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 20:54:07,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:54:07,774 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:54:07,774 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:54:07,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:54:07,774 INFO L82 PathProgramCache]: Analyzing trace with hash 770321983, now seen corresponding path program 1 times [2018-10-26 20:54:07,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:54:07,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:54:07,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:54:07,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:54:07,776 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:54:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:54:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:54:08,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:54:08,127 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 20:54:08,128 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-10-26 20:54:08,129 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [8], [12], [15], [17], [24], [26], [30], [34], [39], [42], [57], [60], [62], [68], [70], [71], [72], [76] [2018-10-26 20:54:08,174 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 20:54:08,175 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 20:54:08,350 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 20:54:10,409 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-26 20:54:10,410 INFO L272 AbstractInterpreter]: Visited 21 different actions 344 times. Merged at 9 different actions 196 times. Widened at 2 different actions 36 times. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-26 20:54:10,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:54:10,470 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-26 20:54:10,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:54:10,470 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/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 [2018-10-26 20:54:10,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:54:10,483 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-26 20:54:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:54:10,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:54:10,955 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-10-26 20:54:10,974 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 6 [2018-10-26 20:54:10,975 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:54:10,984 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:54:10,985 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:54:10,986 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:18, output treesize:6 [2018-10-26 20:54:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:54:11,055 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:54:11,299 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2018-10-26 20:54:11,301 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 20:54:11,321 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 20:54:11,322 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2018-10-26 20:54:11,332 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:54:11,349 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:54:11,373 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 20:54:11,374 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:7 [2018-10-26 20:54:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:54:11,413 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-26 20:54:11,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2018-10-26 20:54:11,413 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-26 20:54:11,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-26 20:54:11,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-26 20:54:11,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2018-10-26 20:54:11,414 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 15 states. [2018-10-26 20:54:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:54:11,925 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2018-10-26 20:54:11,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 20:54:11,928 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2018-10-26 20:54:11,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:54:11,929 INFO L225 Difference]: With dead ends: 79 [2018-10-26 20:54:11,929 INFO L226 Difference]: Without dead ends: 77 [2018-10-26 20:54:11,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2018-10-26 20:54:11,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-26 20:54:11,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2018-10-26 20:54:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-26 20:54:11,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2018-10-26 20:54:11,945 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 22 [2018-10-26 20:54:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:54:11,945 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2018-10-26 20:54:11,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-26 20:54:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2018-10-26 20:54:11,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-26 20:54:11,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:54:11,947 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:54:11,947 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:54:11,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:54:11,947 INFO L82 PathProgramCache]: Analyzing trace with hash 315851480, now seen corresponding path program 1 times [2018-10-26 20:54:11,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:54:11,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:54:11,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:54:11,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:54:11,954 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:54:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:54:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:54:12,047 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:54:12,047 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 20:54:12,048 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2018-10-26 20:54:12,048 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [8], [12], [15], [17], [24], [26], [30], [34], [39], [42], [46], [48], [57], [60], [62], [68], [70], [71], [72], [76] [2018-10-26 20:54:12,049 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 20:54:12,050 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 20:54:12,071 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 20:54:16,016 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-26 20:54:16,017 INFO L272 AbstractInterpreter]: Visited 23 different actions 679 times. Merged at 11 different actions 351 times. Widened at 3 different actions 62 times. Found 24 fixpoints after 3 different actions. Largest state had 29 variables. [2018-10-26 20:54:16,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:54:16,057 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-26 20:54:16,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:54:16,057 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-26 20:54:16,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:54:16,067 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 20:54:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:54:16,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:54:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:54:16,672 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:54:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:54:16,884 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-26 20:54:16,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2018-10-26 20:54:16,884 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-26 20:54:16,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 20:54:16,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 20:54:16,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-26 20:54:16,885 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 10 states. [2018-10-26 20:54:17,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:54:17,029 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2018-10-26 20:54:17,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 20:54:17,030 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2018-10-26 20:54:17,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:54:17,031 INFO L225 Difference]: With dead ends: 117 [2018-10-26 20:54:17,031 INFO L226 Difference]: Without dead ends: 92 [2018-10-26 20:54:17,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-10-26 20:54:17,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-26 20:54:17,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 72. [2018-10-26 20:54:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-26 20:54:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2018-10-26 20:54:17,043 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 26 [2018-10-26 20:54:17,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:54:17,043 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2018-10-26 20:54:17,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 20:54:17,044 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2018-10-26 20:54:17,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-26 20:54:17,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:54:17,046 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:54:17,046 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:54:17,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:54:17,047 INFO L82 PathProgramCache]: Analyzing trace with hash -960795658, now seen corresponding path program 1 times [2018-10-26 20:54:17,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:54:17,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:54:17,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:54:17,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:54:17,048 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:54:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:54:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:54:17,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:54:17,252 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 20:54:17,252 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-10-26 20:54:17,253 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [8], [12], [15], [17], [20], [22], [26], [30], [34], [39], [42], [54], [56], [57], [60], [62], [65], [67], [68], [70], [71], [72], [74], [75], [76], [78], [79] [2018-10-26 20:54:17,254 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 20:54:17,254 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 20:54:17,277 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 20:54:18,956 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-26 20:54:18,957 INFO L272 AbstractInterpreter]: Visited 30 different actions 664 times. Merged at 11 different actions 240 times. Widened at 2 different actions 36 times. Found 1 fixpoints after 1 different actions. Largest state had 29 variables. [2018-10-26 20:54:18,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:54:18,997 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-26 20:54:18,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:54:18,998 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-26 20:54:19,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:54:19,013 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 20:54:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:54:19,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:54:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:54:19,889 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:54:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 20:54:20,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-26 20:54:20,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 11] total 21 [2018-10-26 20:54:20,134 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 20:54:20,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 20:54:20,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 20:54:20,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2018-10-26 20:54:20,135 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 8 states. [2018-10-26 20:54:20,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:54:20,251 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2018-10-26 20:54:20,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 20:54:20,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-10-26 20:54:20,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:54:20,252 INFO L225 Difference]: With dead ends: 73 [2018-10-26 20:54:20,252 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 20:54:20,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2018-10-26 20:54:20,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 20:54:20,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 20:54:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 20:54:20,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 20:54:20,254 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-10-26 20:54:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:54:20,254 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 20:54:20,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 20:54:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 20:54:20,254 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 20:54:20,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 20:54:20,362 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-26 20:54:20,362 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-26 20:54:20,363 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 20:54:20,363 INFO L428 ceAbstractionStarter]: At program point printOddENTRY(lines 7 9) the Hoare annotation is: true [2018-10-26 20:54:20,363 INFO L421 ceAbstractionStarter]: At program point L8(line 8) the Hoare annotation is: (or (let ((.cse0 (+ printOdd_~i 1))) (<= .cse0 (* 2 (div .cse0 2)))) (let ((.cse1 (+ |printOdd_#in~i| 1))) (< (* 2 (div .cse1 2)) .cse1))) [2018-10-26 20:54:20,363 INFO L425 ceAbstractionStarter]: For program point printOddFINAL(lines 7 9) no Hoare annotation was computed. [2018-10-26 20:54:20,363 INFO L425 ceAbstractionStarter]: For program point printOddEXIT(lines 7 9) no Hoare annotation was computed. [2018-10-26 20:54:20,363 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 20:54:20,363 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 20:54:20,363 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 20:54:20,363 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 20:54:20,363 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 30) no Hoare annotation was computed. [2018-10-26 20:54:20,364 INFO L421 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: (<= |main_#t~mem3| (* 2 (div |main_#t~mem3| 2))) [2018-10-26 20:54:20,364 INFO L425 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-10-26 20:54:20,364 INFO L425 ceAbstractionStarter]: For program point L17(lines 17 20) no Hoare annotation was computed. [2018-10-26 20:54:20,364 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 21) no Hoare annotation was computed. [2018-10-26 20:54:20,364 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 30) no Hoare annotation was computed. [2018-10-26 20:54:20,364 INFO L425 ceAbstractionStarter]: For program point L15-3(lines 15 21) no Hoare annotation was computed. [2018-10-26 20:54:20,364 INFO L428 ceAbstractionStarter]: At program point L15-4(lines 15 21) the Hoare annotation is: true [2018-10-26 20:54:20,364 INFO L425 ceAbstractionStarter]: For program point L15-5(lines 15 21) no Hoare annotation was computed. [2018-10-26 20:54:20,364 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 30) the Hoare annotation is: true [2018-10-26 20:54:20,364 INFO L421 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (and (not (= (mod |main_#t~mem6| 2) 0)) (or (not (= (mod (select (select |#memory_int| |main_~#array~0.base|) (+ (* 4 main_~i~0) |main_~#array~0.offset|)) 2) 0)) (= 0 (mod |main_#t~mem5| 2)))) [2018-10-26 20:54:20,364 INFO L425 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2018-10-26 20:54:20,365 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 27) no Hoare annotation was computed. [2018-10-26 20:54:20,365 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 28) no Hoare annotation was computed. [2018-10-26 20:54:20,365 INFO L425 ceAbstractionStarter]: For program point L22-3(lines 22 28) no Hoare annotation was computed. [2018-10-26 20:54:20,365 INFO L428 ceAbstractionStarter]: At program point L22-4(lines 22 28) the Hoare annotation is: true [2018-10-26 20:54:20,365 INFO L425 ceAbstractionStarter]: For program point L22-5(lines 22 28) no Hoare annotation was computed. [2018-10-26 20:54:20,365 INFO L425 ceAbstractionStarter]: For program point printEvenEXIT(lines 4 6) no Hoare annotation was computed. [2018-10-26 20:54:20,365 INFO L428 ceAbstractionStarter]: At program point printEvenENTRY(lines 4 6) the Hoare annotation is: true [2018-10-26 20:54:20,365 INFO L425 ceAbstractionStarter]: For program point printEvenFINAL(lines 4 6) no Hoare annotation was computed. [2018-10-26 20:54:20,365 INFO L421 ceAbstractionStarter]: At program point L5(line 5) the Hoare annotation is: (or (< (* 2 (div |printEven_#in~i| 2)) |printEven_#in~i|) (<= printEven_~i (* 2 (div printEven_~i 2)))) [2018-10-26 20:54:20,365 INFO L425 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2018-10-26 20:54:20,365 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2018-10-26 20:54:20,365 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2018-10-26 20:54:20,366 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2018-10-26 20:54:20,366 INFO L425 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2018-10-26 20:54:20,366 INFO L425 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2018-10-26 20:54:20,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:54:20 BoogieIcfgContainer [2018-10-26 20:54:20,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:54:20,373 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:54:20,373 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:54:20,373 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:54:20,374 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:54:06" (3/4) ... [2018-10-26 20:54:20,378 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 20:54:20,383 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 20:54:20,383 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure printOdd [2018-10-26 20:54:20,383 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 20:54:20,383 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure printEven [2018-10-26 20:54:20,384 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-26 20:54:20,388 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2018-10-26 20:54:20,389 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-10-26 20:54:20,393 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-26 20:54:20,393 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-26 20:54:20,438 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3db65178-9518-4228-8760-65f8b6317f99/bin-2019/utaipan/witness.graphml [2018-10-26 20:54:20,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:54:20,441 INFO L168 Benchmark]: Toolchain (without parser) took 15197.09 ms. Allocated memory was 1.0 GB in the beginning and 2.0 GB in the end (delta: 985.7 MB). Free memory was 955.8 MB in the beginning and 1.6 GB in the end (delta: -622.8 MB). Peak memory consumption was 362.9 MB. Max. memory is 11.5 GB. [2018-10-26 20:54:20,442 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:54:20,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.23 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:54:20,443 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.17 ms. Allocated memory is still 1.0 GB. Free memory was 945.1 MB in the beginning and 942.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:54:20,443 INFO L168 Benchmark]: Boogie Preprocessor took 26.47 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:54:20,444 INFO L168 Benchmark]: RCFGBuilder took 536.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -168.9 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:54:20,444 INFO L168 Benchmark]: TraceAbstraction took 14312.55 ms. Allocated memory was 1.2 GB in the beginning and 2.0 GB in the end (delta: 851.4 MB). Free memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: -467.3 MB). Peak memory consumption was 384.1 MB. Max. memory is 11.5 GB. [2018-10-26 20:54:20,447 INFO L168 Benchmark]: Witness Printer took 67.91 ms. Allocated memory is still 2.0 GB. Free memory is still 1.6 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:54:20,448 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 207.23 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.1 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 39.17 ms. Allocated memory is still 1.0 GB. Free memory was 945.1 MB in the beginning and 942.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.47 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 536.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -168.9 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 14312.55 ms. Allocated memory was 1.2 GB in the beginning and 2.0 GB in the end (delta: 851.4 MB). Free memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: -467.3 MB). Peak memory consumption was 384.1 MB. Max. memory is 11.5 GB. * Witness Printer took 67.91 ms. Allocated memory is still 2.0 GB. Free memory is still 1.6 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. SAFE Result, 14.2s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 117 SDslu, 1068 SDs, 0 SdLazy, 495 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 135 SyntacticMatches, 11 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.0s AbstIntTime, 3 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 65 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 37 PreInvPairs, 55 NumberOfFragments, 83 HoareAnnotationTreeSize, 37 FomulaSimplifications, 343 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 134 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 280 ConstructedInterpolants, 0 QuantifiedInterpolants, 33327 SizeOfPredicates, 40 NumberOfNonLiveVariables, 354 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 18/36 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...