./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/recHanoi03-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi03-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/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 887ada769b510ae5d273618525924110908f2b5f .............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:36:49,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:36:49,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:36:49,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:36:49,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:36:49,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:36:49,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:36:49,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:36:49,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:36:49,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:36:49,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:36:49,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:36:49,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:36:49,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:36:49,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:36:49,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:36:49,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:36:49,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:36:49,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:36:49,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:36:49,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:36:49,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:36:49,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:36:49,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:36:49,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:36:49,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:36:49,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:36:49,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:36:49,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:36:49,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:36:49,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:36:49,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:36:49,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:36:49,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:36:49,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:36:49,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:36:49,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:36:49,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:36:49,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:36:49,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:36:49,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:36:49,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:36:49,728 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:36:49,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:36:49,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:36:49,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:36:49,729 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:36:49,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:36:49,729 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:36:49,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:36:49,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:36:49,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:36:49,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:36:49,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:36:49,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:36:49,730 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:36:49,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:36:49,730 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:36:49,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:36:49,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:36:49,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:36:49,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:36:49,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:36:49,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:36:49,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:36:49,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:36:49,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:36:49,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:36:49,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:36:49,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:36:49,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:36:49,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/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 -> 887ada769b510ae5d273618525924110908f2b5f [2019-12-07 18:36:49,829 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:36:49,837 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:36:49,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:36:49,840 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:36:49,840 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:36:49,841 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/uautomizer/../../sv-benchmarks/c/recursive/recHanoi03-2.c [2019-12-07 18:36:49,877 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/uautomizer/data/9888cdde8/71bc74006dfe4ab68f14c8dc83541b15/FLAG0a021a590 [2019-12-07 18:36:50,200 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:36:50,201 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/sv-benchmarks/c/recursive/recHanoi03-2.c [2019-12-07 18:36:50,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/uautomizer/data/9888cdde8/71bc74006dfe4ab68f14c8dc83541b15/FLAG0a021a590 [2019-12-07 18:36:50,213 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/uautomizer/data/9888cdde8/71bc74006dfe4ab68f14c8dc83541b15 [2019-12-07 18:36:50,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:36:50,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:36:50,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:36:50,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:36:50,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:36:50,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:36:50" (1/1) ... [2019-12-07 18:36:50,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174ba895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:36:50, skipping insertion in model container [2019-12-07 18:36:50,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:36:50" (1/1) ... [2019-12-07 18:36:50,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:36:50,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:36:50,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:36:50,342 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:36:50,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:36:50,399 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:36:50,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:36:50 WrapperNode [2019-12-07 18:36:50,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:36:50,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:36:50,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:36:50,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:36:50,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:36:50" (1/1) ... [2019-12-07 18:36:50,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:36:50" (1/1) ... [2019-12-07 18:36:50,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:36:50,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:36:50,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:36:50,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:36:50,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:36:50" (1/1) ... [2019-12-07 18:36:50,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:36:50" (1/1) ... [2019-12-07 18:36:50,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:36:50" (1/1) ... [2019-12-07 18:36:50,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:36:50" (1/1) ... [2019-12-07 18:36:50,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:36:50" (1/1) ... [2019-12-07 18:36:50,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:36:50" (1/1) ... [2019-12-07 18:36:50,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:36:50" (1/1) ... [2019-12-07 18:36:50,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:36:50,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:36:50,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:36:50,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:36:50,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:36:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/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 [2019-12-07 18:36:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2019-12-07 18:36:50,470 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2019-12-07 18:36:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:36:50,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:36:50,562 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:36:50,562 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 18:36:50,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:36:50 BoogieIcfgContainer [2019-12-07 18:36:50,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:36:50,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:36:50,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:36:50,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:36:50,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:36:50" (1/3) ... [2019-12-07 18:36:50,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9bbaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:36:50, skipping insertion in model container [2019-12-07 18:36:50,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:36:50" (2/3) ... [2019-12-07 18:36:50,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9bbaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:36:50, skipping insertion in model container [2019-12-07 18:36:50,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:36:50" (3/3) ... [2019-12-07 18:36:50,567 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2019-12-07 18:36:50,574 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:36:50,577 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:36:50,584 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:36:50,599 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:36:50,599 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:36:50,599 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:36:50,599 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:36:50,599 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:36:50,599 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:36:50,599 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:36:50,599 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:36:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-12-07 18:36:50,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:36:50,613 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:36:50,613 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:36:50,614 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:36:50,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:36:50,617 INFO L82 PathProgramCache]: Analyzing trace with hash 2032829855, now seen corresponding path program 1 times [2019-12-07 18:36:50,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:36:50,623 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843627242] [2019-12-07 18:36:50,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:36:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:36:50,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843627242] [2019-12-07 18:36:50,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:36:50,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 18:36:50,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057376436] [2019-12-07 18:36:50,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:36:50,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:36:50,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:36:50,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:36:50,770 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2019-12-07 18:36:50,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:36:50,851 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-12-07 18:36:50,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:36:50,852 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 18:36:50,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:36:50,858 INFO L225 Difference]: With dead ends: 28 [2019-12-07 18:36:50,859 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 18:36:50,861 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:36:50,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 18:36:50,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 18:36:50,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 18:36:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-12-07 18:36:50,890 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-12-07 18:36:50,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:36:50,891 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-12-07 18:36:50,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:36:50,891 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-12-07 18:36:50,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 18:36:50,893 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:36:50,893 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:36:50,893 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:36:50,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:36:50,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1521841779, now seen corresponding path program 1 times [2019-12-07 18:36:50,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:36:50,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160513025] [2019-12-07 18:36:50,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:36:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 18:36:50,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160513025] [2019-12-07 18:36:50,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650206008] [2019-12-07 18:36:50,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:36:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:51,009 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 18:36:51,012 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:36:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 18:36:51,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:36:51,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-12-07 18:36:51,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69149338] [2019-12-07 18:36:51,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 18:36:51,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:36:51,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 18:36:51,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-12-07 18:36:51,126 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 14 states. [2019-12-07 18:36:51,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:36:51,205 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-12-07 18:36:51,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 18:36:51,205 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2019-12-07 18:36:51,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:36:51,206 INFO L225 Difference]: With dead ends: 22 [2019-12-07 18:36:51,206 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 18:36:51,207 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-12-07 18:36:51,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 18:36:51,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 18:36:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 18:36:51,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-12-07 18:36:51,211 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2019-12-07 18:36:51,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:36:51,211 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-12-07 18:36:51,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 18:36:51,211 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-12-07 18:36:51,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 18:36:51,212 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:36:51,212 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:36:51,412 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:36:51,412 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:36:51,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:36:51,413 INFO L82 PathProgramCache]: Analyzing trace with hash 166885599, now seen corresponding path program 2 times [2019-12-07 18:36:51,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:36:51,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65784522] [2019-12-07 18:36:51,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:36:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 18:36:51,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65784522] [2019-12-07 18:36:51,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954721401] [2019-12-07 18:36:51,513 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:36:51,534 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:36:51,534 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:36:51,535 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 18:36:51,536 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:36:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 18:36:51,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:36:51,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-12-07 18:36:51,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989868512] [2019-12-07 18:36:51,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 18:36:51,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:36:51,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 18:36:51,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2019-12-07 18:36:51,679 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 18 states. [2019-12-07 18:36:51,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:36:51,833 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-12-07 18:36:51,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 18:36:51,834 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2019-12-07 18:36:51,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:36:51,835 INFO L225 Difference]: With dead ends: 30 [2019-12-07 18:36:51,835 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 18:36:51,835 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2019-12-07 18:36:51,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 18:36:51,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-07 18:36:51,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 18:36:51,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-12-07 18:36:51,840 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2019-12-07 18:36:51,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:36:51,840 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-12-07 18:36:51,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 18:36:51,840 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-12-07 18:36:51,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-12-07 18:36:51,841 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:36:51,841 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:36:52,041 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:36:52,042 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:36:52,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:36:52,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1033731103, now seen corresponding path program 3 times [2019-12-07 18:36:52,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:36:52,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763976892] [2019-12-07 18:36:52,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:36:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:36:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-12-07 18:36:52,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763976892] [2019-12-07 18:36:52,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259575011] [2019-12-07 18:36:52,239 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:36:52,260 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-07 18:36:52,260 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:36:52,260 INFO L264 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 18:36:52,262 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-12-07 18:37:16,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 18:37:16,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2019-12-07 18:37:16,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100684344] [2019-12-07 18:37:16,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 18:37:16,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:16,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 18:37:16,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=573, Unknown=8, NotChecked=0, Total=650 [2019-12-07 18:37:16,020 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 14 states. [2019-12-07 18:37:20,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:20,994 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2019-12-07 18:37:20,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 18:37:20,999 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2019-12-07 18:37:20,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:20,999 INFO L225 Difference]: With dead ends: 24 [2019-12-07 18:37:21,000 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 18:37:21,000 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=69, Invalid=573, Unknown=8, NotChecked=0, Total=650 [2019-12-07 18:37:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 18:37:21,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 18:37:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 18:37:21,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:37:21,001 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-12-07 18:37:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:21,001 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:37:21,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 18:37:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:37:21,001 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 18:37:21,202 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:37:21,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 18:37:21,221 INFO L246 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2019-12-07 18:37:21,221 INFO L246 CegarLoopResult]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2019-12-07 18:37:21,221 INFO L249 CegarLoopResult]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2019-12-07 18:37:21,222 INFO L246 CegarLoopResult]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2019-12-07 18:37:21,222 INFO L242 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2019-12-07 18:37:21,222 INFO L246 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-12-07 18:37:21,222 INFO L246 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2019-12-07 18:37:21,222 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 18:37:21,222 INFO L246 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2019-12-07 18:37:21,222 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 18:37:21,222 INFO L242 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 31) [2019-12-07 18:37:21,223 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 18:37:21,223 INFO L246 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2019-12-07 18:37:21,223 INFO L246 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2019-12-07 18:37:21,223 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2019-12-07 18:37:21,223 INFO L249 CegarLoopResult]: At program point L24(lines 24 35) the Hoare annotation is: true [2019-12-07 18:37:21,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:37:21 BoogieIcfgContainer [2019-12-07 18:37:21,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:37:21,231 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:37:21,231 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:37:21,231 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:37:21,232 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:36:50" (3/4) ... [2019-12-07 18:37:21,235 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 18:37:21,239 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2019-12-07 18:37:21,243 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 18:37:21,243 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 18:37:21,270 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_96ffba8c-9671-4319-9cfe-e418f94302af/bin/uautomizer/witness.graphml [2019-12-07 18:37:21,270 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:37:21,272 INFO L168 Benchmark]: Toolchain (without parser) took 31056.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -109.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:37:21,272 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:37:21,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:21,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:37:21,273 INFO L168 Benchmark]: Boogie Preprocessor took 10.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:37:21,273 INFO L168 Benchmark]: RCFGBuilder took 132.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:21,274 INFO L168 Benchmark]: TraceAbstraction took 30667.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:21,274 INFO L168 Benchmark]: Witness Printer took 39.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:21,276 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 132.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 30667.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * Witness Printer took 39.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: 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: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Result: SAFE, OverallTime: 30.6s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 20 SDslu, 237 SDs, 0 SdLazy, 297 SolverSat, 8 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 24.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 6 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 24.4s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 147 ConstructedInterpolants, 18 QuantifiedInterpolants, 22482 SizeOfPredicates, 11 NumberOfNonLiveVariables, 179 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 96/140 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...