./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/recHanoi03_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi03_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 887ada769b510ae5d273618525924110908f2b5f ........................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 09:15:38,119 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 09:15:38,120 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 09:15:38,126 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 09:15:38,127 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 09:15:38,127 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 09:15:38,128 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 09:15:38,129 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 09:15:38,130 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 09:15:38,130 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 09:15:38,131 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 09:15:38,131 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 09:15:38,131 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 09:15:38,132 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 09:15:38,133 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 09:15:38,133 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 09:15:38,133 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 09:15:38,134 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 09:15:38,135 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 09:15:38,136 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 09:15:38,137 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 09:15:38,137 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 09:15:38,139 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 09:15:38,139 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 09:15:38,139 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 09:15:38,139 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 09:15:38,140 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 09:15:38,140 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 09:15:38,141 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 09:15:38,141 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 09:15:38,142 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 09:15:38,142 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 09:15:38,142 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 09:15:38,142 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 09:15:38,143 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 09:15:38,143 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 09:15:38,143 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-09 09:15:38,151 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 09:15:38,151 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 09:15:38,152 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 09:15:38,152 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 09:15:38,152 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 09:15:38,152 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 09:15:38,152 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 09:15:38,153 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 09:15:38,153 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 09:15:38,153 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 09:15:38,153 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 09:15:38,153 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 09:15:38,153 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 09:15:38,153 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 09:15:38,153 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 09:15:38,154 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 09:15:38,154 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 09:15:38,154 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 09:15:38,154 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 09:15:38,154 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 09:15:38,154 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 09:15:38,154 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 09:15:38,154 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 09:15:38,155 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:15:38,155 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 09:15:38,155 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 09:15:38,155 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 09:15:38,155 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 09:15:38,155 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 09:15:38,155 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 09:15:38,155 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 887ada769b510ae5d273618525924110908f2b5f [2018-12-09 09:15:38,175 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 09:15:38,182 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 09:15:38,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 09:15:38,185 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 09:15:38,185 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 09:15:38,185 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/recHanoi03_true-unreach-call_true-no-overflow_true-termination.c [2018-12-09 09:15:38,219 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/data/1488e4cab/6492acf306f845da96b8c4378b2f4760/FLAG3104d3837 [2018-12-09 09:15:38,569 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 09:15:38,569 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/sv-benchmarks/c/recursive/recHanoi03_true-unreach-call_true-no-overflow_true-termination.c [2018-12-09 09:15:38,573 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/data/1488e4cab/6492acf306f845da96b8c4378b2f4760/FLAG3104d3837 [2018-12-09 09:15:38,950 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/data/1488e4cab/6492acf306f845da96b8c4378b2f4760 [2018-12-09 09:15:38,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 09:15:38,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 09:15:38,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 09:15:38,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 09:15:38,956 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 09:15:38,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:15:38" (1/1) ... [2018-12-09 09:15:38,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d10e54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:38, skipping insertion in model container [2018-12-09 09:15:38,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:15:38" (1/1) ... [2018-12-09 09:15:38,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 09:15:38,975 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 09:15:39,057 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:15:39,059 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 09:15:39,067 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:15:39,075 INFO L195 MainTranslator]: Completed translation [2018-12-09 09:15:39,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:39 WrapperNode [2018-12-09 09:15:39,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 09:15:39,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 09:15:39,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 09:15:39,076 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 09:15:39,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:39" (1/1) ... [2018-12-09 09:15:39,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:39" (1/1) ... [2018-12-09 09:15:39,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 09:15:39,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 09:15:39,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 09:15:39,087 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 09:15:39,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:39" (1/1) ... [2018-12-09 09:15:39,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:39" (1/1) ... [2018-12-09 09:15:39,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:39" (1/1) ... [2018-12-09 09:15:39,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:39" (1/1) ... [2018-12-09 09:15:39,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:39" (1/1) ... [2018-12-09 09:15:39,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:39" (1/1) ... [2018-12-09 09:15:39,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:39" (1/1) ... [2018-12-09 09:15:39,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 09:15:39,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 09:15:39,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 09:15:39,097 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 09:15:39,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:15:39,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 09:15:39,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 09:15:39,156 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2018-12-09 09:15:39,156 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2018-12-09 09:15:39,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 09:15:39,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 09:15:39,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 09:15:39,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 09:15:39,231 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 09:15:39,231 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 09:15:39,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:15:39 BoogieIcfgContainer [2018-12-09 09:15:39,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 09:15:39,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 09:15:39,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 09:15:39,233 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 09:15:39,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:15:38" (1/3) ... [2018-12-09 09:15:39,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35054ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:15:39, skipping insertion in model container [2018-12-09 09:15:39,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:39" (2/3) ... [2018-12-09 09:15:39,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35054ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:15:39, skipping insertion in model container [2018-12-09 09:15:39,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:15:39" (3/3) ... [2018-12-09 09:15:39,235 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03_true-unreach-call_true-no-overflow_true-termination.c [2018-12-09 09:15:39,241 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 09:15:39,245 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 09:15:39,254 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 09:15:39,271 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 09:15:39,272 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 09:15:39,272 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 09:15:39,272 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 09:15:39,272 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 09:15:39,272 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 09:15:39,272 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 09:15:39,272 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 09:15:39,272 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 09:15:39,282 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-12-09 09:15:39,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 09:15:39,285 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:39,286 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:15:39,287 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:39,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:39,290 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2018-12-09 09:15:39,291 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:15:39,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:15:39,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:15:39,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:15:39,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:15:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:39,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:15:39,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 09:15:39,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 09:15:39,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 09:15:39,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 09:15:39,414 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2018-12-09 09:15:39,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:39,471 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-12-09 09:15:39,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 09:15:39,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-12-09 09:15:39,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:39,478 INFO L225 Difference]: With dead ends: 33 [2018-12-09 09:15:39,478 INFO L226 Difference]: Without dead ends: 19 [2018-12-09 09:15:39,479 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-09 09:15:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-12-09 09:15:39,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-12-09 09:15:39,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-09 09:15:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-12-09 09:15:39,503 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2018-12-09 09:15:39,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:39,503 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-12-09 09:15:39,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 09:15:39,503 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-12-09 09:15:39,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 09:15:39,504 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:39,504 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:15:39,504 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:39,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:39,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1998834103, now seen corresponding path program 1 times [2018-12-09 09:15:39,505 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:15:39,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:15:39,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:15:39,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:15:39,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:15:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:39,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 09:15:39,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:15:39,572 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 09:15:39,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:15:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:39,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 09:15:39,716 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 09:15:39,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2018-12-09 09:15:39,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 09:15:39,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 09:15:39,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-12-09 09:15:39,717 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 14 states. [2018-12-09 09:15:39,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:39,803 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-12-09 09:15:39,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 09:15:39,803 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2018-12-09 09:15:39,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:39,804 INFO L225 Difference]: With dead ends: 26 [2018-12-09 09:15:39,804 INFO L226 Difference]: Without dead ends: 22 [2018-12-09 09:15:39,804 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2018-12-09 09:15:39,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-09 09:15:39,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-12-09 09:15:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-09 09:15:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-12-09 09:15:39,808 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2018-12-09 09:15:39,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:39,808 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-12-09 09:15:39,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 09:15:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-12-09 09:15:39,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 09:15:39,808 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:39,808 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:15:39,809 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:39,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:39,809 INFO L82 PathProgramCache]: Analyzing trace with hash 293522751, now seen corresponding path program 2 times [2018-12-09 09:15:39,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:15:39,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:15:39,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:15:39,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:15:39,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:15:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 09:15:39,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:15:39,876 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 09:15:39,882 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 09:15:39,890 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 09:15:39,890 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 09:15:39,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-09 09:15:40,021 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 09:15:40,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2018-12-09 09:15:40,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 09:15:40,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 09:15:40,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2018-12-09 09:15:40,022 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 18 states. [2018-12-09 09:15:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:40,173 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-12-09 09:15:40,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-09 09:15:40,174 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2018-12-09 09:15:40,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:40,174 INFO L225 Difference]: With dead ends: 34 [2018-12-09 09:15:40,174 INFO L226 Difference]: Without dead ends: 28 [2018-12-09 09:15:40,175 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2018-12-09 09:15:40,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-09 09:15:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-09 09:15:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-09 09:15:40,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-12-09 09:15:40,178 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2018-12-09 09:15:40,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:40,178 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-12-09 09:15:40,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 09:15:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-12-09 09:15:40,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 09:15:40,179 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:40,179 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:15:40,179 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:40,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:40,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1152432193, now seen corresponding path program 3 times [2018-12-09 09:15:40,180 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:15:40,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:15:40,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:15:40,180 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 09:15:40,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:15:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-12-09 09:15:40,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:15:40,293 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 09:15:40,299 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 09:15:40,310 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-12-09 09:15:40,310 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 09:15:40,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-12-09 09:15:40,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 09:15:40,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 27 [2018-12-09 09:15:40,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-12-09 09:15:40,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-12-09 09:15:40,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=629, Unknown=1, NotChecked=0, Total=702 [2018-12-09 09:15:40,788 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 27 states. [2018-12-09 09:15:41,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:41,110 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-12-09 09:15:41,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 09:15:41,110 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 38 [2018-12-09 09:15:41,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:41,111 INFO L225 Difference]: With dead ends: 28 [2018-12-09 09:15:41,111 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 09:15:41,111 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=1235, Unknown=1, NotChecked=0, Total=1406 [2018-12-09 09:15:41,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 09:15:41,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 09:15:41,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 09:15:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 09:15:41,112 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2018-12-09 09:15:41,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:41,112 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 09:15:41,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-12-09 09:15:41,112 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 09:15:41,112 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 09:15:41,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 09:15:41,127 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 09:15:41,127 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 09:15:41,127 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2018-12-09 09:15:41,128 INFO L448 ceAbstractionStarter]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2018-12-09 09:15:41,128 INFO L451 ceAbstractionStarter]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2018-12-09 09:15:41,128 INFO L448 ceAbstractionStarter]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2018-12-09 09:15:41,128 INFO L444 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2018-12-09 09:15:41,128 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-12-09 09:15:41,128 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 09:15:41,128 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 09:15:41,128 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 09:15:41,128 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 09:15:41,128 INFO L448 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2018-12-09 09:15:41,128 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 34) no Hoare annotation was computed. [2018-12-09 09:15:41,128 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2018-12-09 09:15:41,128 INFO L444 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (<= main_~n~0 31) [2018-12-09 09:15:41,128 INFO L448 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2018-12-09 09:15:41,128 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 28) no Hoare annotation was computed. [2018-12-09 09:15:41,129 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 24 35) no Hoare annotation was computed. [2018-12-09 09:15:41,129 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2018-12-09 09:15:41,129 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 24 35) no Hoare annotation was computed. [2018-12-09 09:15:41,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:15:41 BoogieIcfgContainer [2018-12-09 09:15:41,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 09:15:41,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 09:15:41,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 09:15:41,131 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 09:15:41,131 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:15:39" (3/4) ... [2018-12-09 09:15:41,133 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 09:15:41,137 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 09:15:41,138 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2018-12-09 09:15:41,138 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 09:15:41,140 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 09:15:41,140 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-09 09:15:41,140 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 09:15:41,164 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_193fb96c-345a-4c98-a7b4-659817bdfc25/bin-2019/uautomizer/witness.graphml [2018-12-09 09:15:41,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 09:15:41,165 INFO L168 Benchmark]: Toolchain (without parser) took 2212.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.0 MB). Free memory was 961.4 MB in the beginning and 1.2 GB in the end (delta: -218.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:15:41,166 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:15:41,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 121.57 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 09:15:41,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.24 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:15:41,166 INFO L168 Benchmark]: Boogie Preprocessor took 9.70 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:15:41,166 INFO L168 Benchmark]: RCFGBuilder took 134.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -165.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-09 09:15:41,167 INFO L168 Benchmark]: TraceAbstraction took 1899.00 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -66.5 MB). Peak memory consumption was 4.8 MB. Max. memory is 11.5 GB. [2018-12-09 09:15:41,167 INFO L168 Benchmark]: Witness Printer took 33.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. [2018-12-09 09:15:41,168 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 121.57 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.24 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.70 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 134.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -165.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1899.00 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -66.5 MB). Peak memory consumption was 4.8 MB. Max. memory is 11.5 GB. * Witness Printer took 33.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 60 SDtfs, 22 SDslu, 443 SDs, 0 SdLazy, 509 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 11 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 175 ConstructedInterpolants, 24 QuantifiedInterpolants, 28184 SizeOfPredicates, 11 NumberOfNonLiveVariables, 203 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 85/140 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...