./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi03-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/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 0.1.24-cad4683 [2019-11-15 20:29:46,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:29:46,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:29:46,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:29:46,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:29:46,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:29:46,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:29:46,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:29:46,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:29:46,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:29:46,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:29:46,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:29:46,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:29:46,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:29:46,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:29:46,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:29:46,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:29:46,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:29:46,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:29:46,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:29:46,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:29:46,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:29:46,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:29:46,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:29:46,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:29:46,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:29:46,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:29:46,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:29:46,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:29:46,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:29:46,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:29:46,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:29:46,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:29:46,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:29:46,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:29:46,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:29:46,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:29:46,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:29:46,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:29:46,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:29:46,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:29:46,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 20:29:46,525 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:29:46,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:29:46,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:29:46,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:29:46,527 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:29:46,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:29:46,527 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:29:46,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:29:46,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:29:46,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:29:46,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 20:29:46,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:29:46,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 20:29:46,529 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:29:46,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:29:46,530 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:29:46,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 20:29:46,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:29:46,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:29:46,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:29:46,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:29:46,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:29:46,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:29:46,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:29:46,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 20:29:46,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:29:46,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:29:46,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 20:29:46,533 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_8696559d-e229-4627-bee8-2c8608d22b34/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 [2019-11-15 20:29:46,591 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:29:46,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:29:46,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:29:46,619 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:29:46,619 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:29:46,622 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/bin/uautomizer/../../sv-benchmarks/c/recursive/recHanoi03-2.c [2019-11-15 20:29:46,700 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/bin/uautomizer/data/2d940fe11/5ef899d0d572414aa2460773c6fe823c/FLAG0d47a04b7 [2019-11-15 20:29:47,124 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:29:47,127 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/sv-benchmarks/c/recursive/recHanoi03-2.c [2019-11-15 20:29:47,139 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/bin/uautomizer/data/2d940fe11/5ef899d0d572414aa2460773c6fe823c/FLAG0d47a04b7 [2019-11-15 20:29:47,564 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/bin/uautomizer/data/2d940fe11/5ef899d0d572414aa2460773c6fe823c [2019-11-15 20:29:47,567 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:29:47,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:29:47,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:29:47,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:29:47,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:29:47,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:29:47" (1/1) ... [2019-11-15 20:29:47,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2e0d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:29:47, skipping insertion in model container [2019-11-15 20:29:47,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:29:47" (1/1) ... [2019-11-15 20:29:47,589 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:29:47,609 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:29:47,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:29:47,860 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:29:47,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:29:47,896 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:29:47,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:29:47 WrapperNode [2019-11-15 20:29:47,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:29:47,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:29:47,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:29:47,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:29:47,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:29:47" (1/1) ... [2019-11-15 20:29:47,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:29:47" (1/1) ... [2019-11-15 20:29:47,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:29:47,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:29:47,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:29:47,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:29:47,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:29:47" (1/1) ... [2019-11-15 20:29:47,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:29:47" (1/1) ... [2019-11-15 20:29:47,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:29:47" (1/1) ... [2019-11-15 20:29:47,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:29:47" (1/1) ... [2019-11-15 20:29:47,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:29:47" (1/1) ... [2019-11-15 20:29:47,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:29:47" (1/1) ... [2019-11-15 20:29:47,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:29:47" (1/1) ... [2019-11-15 20:29:47,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:29:47,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:29:47,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:29:47,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:29:47,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:29:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/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 [2019-11-15 20:29:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2019-11-15 20:29:48,012 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2019-11-15 20:29:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:29:48,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:29:48,180 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:29:48,180 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 20:29:48,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:29:48 BoogieIcfgContainer [2019-11-15 20:29:48,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:29:48,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:29:48,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:29:48,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:29:48,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:29:47" (1/3) ... [2019-11-15 20:29:48,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d9b2d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:29:48, skipping insertion in model container [2019-11-15 20:29:48,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:29:47" (2/3) ... [2019-11-15 20:29:48,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d9b2d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:29:48, skipping insertion in model container [2019-11-15 20:29:48,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:29:48" (3/3) ... [2019-11-15 20:29:48,191 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2019-11-15 20:29:48,202 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:29:48,209 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 20:29:48,221 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 20:29:48,244 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:29:48,244 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 20:29:48,245 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:29:48,245 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:29:48,245 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:29:48,245 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:29:48,245 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:29:48,246 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:29:48,263 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-15 20:29:48,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 20:29:48,268 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:29:48,268 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:29:48,269 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:29:48,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:29:48,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2032829855, now seen corresponding path program 1 times [2019-11-15 20:29:48,281 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:29:48,281 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941358308] [2019-11-15 20:29:48,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:29:48,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:29:48,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:29:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:29:48,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941358308] [2019-11-15 20:29:48,495 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:29:48,495 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 20:29:48,495 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411585839] [2019-11-15 20:29:48,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:29:48,499 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:29:48,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:29:48,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:29:48,513 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2019-11-15 20:29:48,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:29:48,662 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-11-15 20:29:48,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:29:48,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-15 20:29:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:29:48,675 INFO L225 Difference]: With dead ends: 28 [2019-11-15 20:29:48,675 INFO L226 Difference]: Without dead ends: 15 [2019-11-15 20:29:48,678 INFO L600 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 [2019-11-15 20:29:48,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-15 20:29:48,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-15 20:29:48,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-15 20:29:48,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-15 20:29:48,716 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-11-15 20:29:48,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:29:48,716 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-15 20:29:48,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:29:48,716 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-15 20:29:48,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 20:29:48,718 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:29:48,718 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:29:48,719 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:29:48,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:29:48,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1521841779, now seen corresponding path program 1 times [2019-11-15 20:29:48,720 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:29:48,720 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31317289] [2019-11-15 20:29:48,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:29:48,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:29:48,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:29:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 20:29:48,883 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31317289] [2019-11-15 20:29:48,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983930888] [2019-11-15 20:29:48,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/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 [2019-11-15 20:29:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:48,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-15 20:29:48,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:29:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 20:29:49,208 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:29:49,209 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-11-15 20:29:49,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568752831] [2019-11-15 20:29:49,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-15 20:29:49,211 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:29:49,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-15 20:29:49,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-11-15 20:29:49,212 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 14 states. [2019-11-15 20:29:49,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:29:49,406 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-11-15 20:29:49,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 20:29:49,408 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2019-11-15 20:29:49,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:29:49,409 INFO L225 Difference]: With dead ends: 22 [2019-11-15 20:29:49,409 INFO L226 Difference]: Without dead ends: 18 [2019-11-15 20:29:49,411 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-11-15 20:29:49,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-15 20:29:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-15 20:29:49,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 20:29:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-15 20:29:49,421 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2019-11-15 20:29:49,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:29:49,422 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-15 20:29:49,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-15 20:29:49,423 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-15 20:29:49,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 20:29:49,425 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:29:49,427 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:29:49,630 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:29:49,630 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:29:49,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:29:49,631 INFO L82 PathProgramCache]: Analyzing trace with hash 166885599, now seen corresponding path program 2 times [2019-11-15 20:29:49,631 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:29:49,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857195924] [2019-11-15 20:29:49,632 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:29:49,632 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:29:49,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:29:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:49,847 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-15 20:29:49,848 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857195924] [2019-11-15 20:29:49,848 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760743900] [2019-11-15 20:29:49,848 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/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 [2019-11-15 20:29:49,913 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 20:29:49,914 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:29:49,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-15 20:29:49,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:29:50,242 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-15 20:29:50,243 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:29:50,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-15 20:29:50,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103769702] [2019-11-15 20:29:50,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 20:29:50,244 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:29:50,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 20:29:50,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2019-11-15 20:29:50,245 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 18 states. [2019-11-15 20:29:50,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:29:50,581 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-11-15 20:29:50,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-15 20:29:50,581 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2019-11-15 20:29:50,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:29:50,583 INFO L225 Difference]: With dead ends: 30 [2019-11-15 20:29:50,583 INFO L226 Difference]: Without dead ends: 24 [2019-11-15 20:29:50,584 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2019-11-15 20:29:50,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-15 20:29:50,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-15 20:29:50,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-15 20:29:50,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-11-15 20:29:50,591 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2019-11-15 20:29:50,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:29:50,592 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-11-15 20:29:50,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 20:29:50,592 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-11-15 20:29:50,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-15 20:29:50,595 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:29:50,595 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:29:50,806 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:29:50,806 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:29:50,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:29:50,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1033731103, now seen corresponding path program 3 times [2019-11-15 20:29:50,807 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:29:50,807 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713071211] [2019-11-15 20:29:50,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:29:50,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:29:50,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:29:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:29:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-15 20:29:51,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713071211] [2019-11-15 20:29:51,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647924098] [2019-11-15 20:29:51,170 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/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 [2019-11-15 20:29:51,225 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-15 20:29:51,226 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:29:51,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-15 20:29:51,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:30:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-15 20:30:19,103 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:30:19,104 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2019-11-15 20:30:19,104 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86518100] [2019-11-15 20:30:19,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-15 20:30:19,105 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:30:19,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-15 20:30:19,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=569, Unknown=12, NotChecked=0, Total=650 [2019-11-15 20:30:19,105 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 14 states. [2019-11-15 20:30:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:30:27,322 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2019-11-15 20:30:27,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-15 20:30:27,365 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2019-11-15 20:30:27,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:30:27,366 INFO L225 Difference]: With dead ends: 24 [2019-11-15 20:30:27,366 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 20:30:27,367 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=69, Invalid=569, Unknown=12, NotChecked=0, Total=650 [2019-11-15 20:30:27,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 20:30:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 20:30:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 20:30:27,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 20:30:27,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-11-15 20:30:27,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:30:27,368 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:30:27,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-15 20:30:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 20:30:27,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 20:30:27,569 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:30:27,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 20:30:27,592 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2019-11-15 20:30:27,593 INFO L443 ceAbstractionStarter]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2019-11-15 20:30:27,593 INFO L446 ceAbstractionStarter]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2019-11-15 20:30:27,593 INFO L443 ceAbstractionStarter]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2019-11-15 20:30:27,593 INFO L439 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2019-11-15 20:30:27,593 INFO L443 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-11-15 20:30:27,593 INFO L443 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2019-11-15 20:30:27,594 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 20:30:27,594 INFO L443 ceAbstractionStarter]: For program point L30(lines 30 34) no Hoare annotation was computed. [2019-11-15 20:30:27,594 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 20:30:27,594 INFO L439 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 31) [2019-11-15 20:30:27,594 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 20:30:27,594 INFO L443 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2019-11-15 20:30:27,594 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2019-11-15 20:30:27,595 INFO L443 ceAbstractionStarter]: For program point L26(lines 26 28) no Hoare annotation was computed. [2019-11-15 20:30:27,595 INFO L446 ceAbstractionStarter]: At program point L24(lines 24 35) the Hoare annotation is: true [2019-11-15 20:30:27,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:30:27 BoogieIcfgContainer [2019-11-15 20:30:27,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:30:27,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:30:27,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:30:27,602 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:30:27,603 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:29:48" (3/4) ... [2019-11-15 20:30:27,608 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 20:30:27,615 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2019-11-15 20:30:27,620 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-15 20:30:27,620 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 20:30:27,664 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8696559d-e229-4627-bee8-2c8608d22b34/bin/uautomizer/witness.graphml [2019-11-15 20:30:27,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:30:27,667 INFO L168 Benchmark]: Toolchain (without parser) took 40097.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -153.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:30:27,668 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:30:27,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -196.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-15 20:30:27,669 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:30:27,669 INFO L168 Benchmark]: Boogie Preprocessor took 15.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:30:27,670 INFO L168 Benchmark]: RCFGBuilder took 236.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-15 20:30:27,671 INFO L168 Benchmark]: TraceAbstraction took 39418.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:30:27,671 INFO L168 Benchmark]: Witness Printer took 62.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-15 20:30:27,674 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 327.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -196.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 236.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 39418.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Witness Printer took 62.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 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: 39.3s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 20 SDslu, 237 SDs, 0 SdLazy, 295 SolverSat, 8 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 28.9s 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, 0.1s SatisfiabilityAnalysisTime, 29.2s 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...